S-101 - Electronic Navigational Chart - Feature Catalog v.2.0.0

Feature Types

Information Types

Associations

Roles

Features : ABCDEFGHILMNOPQRSTUVW
Informations : CNS
Associations : ABCDFIMPQRSTU
Attributes : BCDEFHIJLMNOPQRSTUVWZ
Roles : T

Feature Details

Airport/Airfield (AirportAirfield ) - AIRARE

Definition: A defined area on land (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft.

Primitive: point, surface

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Archipelagic Sea Lane Area (ArchipelagicSeaLaneArea ) - ARCSLN

Definition: Sea lanes designated by an archipelagic State for the passage of ships and aircraft.

Primitive: surface

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Archipelagic Sea Lane Axis (ArchipelagicSeaLaneAxis ) - ASLXIS

Definition: The reference line used to determine the maximum extents of an Archipelagic Sea Lane. It may not indicate the deepest water nor any recommended route or track.

Primitive: curve

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Archipelagic Sea Lane (ArchipelagicSeaLane ) - C_AGGR

Definition: Sea lanes designated by an archipelagic State for the passage of ships and aircraft. The Archipelagic Sea Lane aggregates all component parts of an Archipelagic Sea Lane system.

Primitive: surface, noGeometry

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Anchorage Area (AnchorageArea ) - ACHARE

Definition: An area in which vessels or seaplanes anchor or may anchor.

Primitive: point, surface

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Anchor Berth (AnchorBerth ) - ACHBRT

Definition: A designated area of water where a vessel, seaplane, etc., may anchor.

Primitive: point, surface

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Administration Area (AdministrationArea ) - ADMARE

Definition: A defined area within which a jurisdiction applies. It may or may not be named.

Primitive: curve, surface

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Built-Up Area (BuiltUpArea ) - BUAARE

Definition: An area of land or construction over the water containing a concentration of buildings and/or other structures.

Primitive: point, surface

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Building (Building ) - BUISGL

Definition: A free-standing self-supporting construction that is roofed, usually walled, and is intended for human occupancy (for example: a place of work or recreation) and/or habitation.

Primitive: point, surface

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Bridge (Bridge ) - BRIDGE

Definition: A structure erected over a depression or an obstacle such as a body of water, railroad, etc., to provide a roadway for vehicles or pedestrians.

Primitive: curve, surface, noGeometry

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Berth (Berth ) - BERTHS

Definition: A place, generally named or numbered, where a vessel may moor or anchor.

Primitive: point, curve, surface

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Bollard (Bollard )

Definition: Small shaped post, mounted on a wharf or dolphin used to secure ship's lines.

Primitive: point

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Coastline (Coastline ) - COALNE

Definition: The line where shore and water meet. Shoreline and coastline are generally used synonymously.

Primitive: curve

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Conveyor (Conveyor ) - CONVYR

Definition: A mechanical device for conveying bulk material or people using an endless moving belt or series of rollers.

Primitive: curve, surface

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Cable Overhead (CableOverhead ) - CBLOHD

Definition: A single continuous rope-like bundle consisting of multiple strands of fiber, plastic, metal, and/or glass, which is supported by structures such as poles or pylons and passing over or nearby navigable waters.

Primitive: curve

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Checkpoint (Checkpoint ) - CHKPNT

Definition: An official location at which to register, declare and/or inspect goods and/or people.

Primitive: point, surface

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Causeway (Causeway ) - CAUSWY

Definition: A raised way across low or wet ground or water.

Primitive: curve, surface

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Canal (Canal ) - CANALS

Definition: An artificial waterway with no flow, or a controlled flow, used for navigation, or for draining or irrigating land (ditch).

Primitive: curve, surface

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Crane (Crane ) - CRANES

Definition: A machine for lifting, shifting and lowering objects or materials by means of a swinging boom or with a lifting apparatus supported on an overhead track.

Primitive: point, surface

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Current - Non-Gravitational (CurrentNonGravitational ) - CURENT, Non-Tidal Current

Definition: Any current that is caused by other than tide producing forces.

Primitive: point

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Cable Submarine (CableSubmarine ) - CBLSUB, Submarine Cable

Definition: An assembly of wires or fibres, or a wire rope or chain, which has been laid underwater or buried beneath the seafloor.

Primitive: curve

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Cable Area (CableArea ) - CBLARE

Definition: An area which contains one or more submarine cables.

Primitive: surface

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Cargo Transhipment Area (CargoTranshipmentArea ) - CTSARE, Cargo Lightening Area, Cargo Transfer Area

Definition: An area designated for transfer of cargo from one vessel to another sometimes in order to reduce a vessel's draught.

Primitive: point, surface

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Caution Area (CautionArea ) - CTNARE

Definition: Generally, an area where the mariner has to be made aware of circumstances influencing the safety of navigation.

Primitive: point, surface

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Contiguous Zone (ContiguousZone ) - CONZNE

Definition: A zone contiguous to a coastal State's Territorial Sea, which may not extend beyond 24 nautical miles from the baselines from which the breadth of the Territorial Sea is measured. The coastal State may exercise certain control in this zone subject to the provisions of International Law.

Primitive: curve, surface

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Continental Shelf Area (ContinentalShelfArea ) - COSARE

Definition: The Continental Shelf of a coastal State comprises the seabed and subsoil of the submarine areas that extend beyond its Territorial Sea throughout the natural prolongation of its land territory to the outer edge of the continental margin, or to a distance of 200 nautical miles from the baselines from which the breadth of the Territorial Sea is measured where the outer edge of the continental margin does not extend up to that distance.

Primitive: curve, surface

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Custom Zone (CustomZone ) - CUSZNE

Definition: The area within which national custom regulations are in force.

Primitive: surface

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Collision Regulations Limit (CollisionRegulationsLimit )

Definition: Convention on the International Regulations for Preventing Collisions at Sea, 1972 (COLREGs). The demarcation line between inland navigation rules and international navigation rules.

Primitive: curve

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Cardinal Buoy (CardinalBuoy ) - BOYCAR

Definition: A cardinal buoy is used in conjunction with the compass to indicate where the mariner may find the best navigable water. It is placed in one of the four quadrants (North, East, South and West), bounded by inter-cardinal bearings from the point marked.

Primitive: point

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Cardinal Beacon (CardinalBeacon ) - BCNCAR

Definition: A cardinal beacon is used in conjunction with the compass to indicate where the mariner may find the best navigable water. It is placed in one of the four quadrants (North, East, South and West), bounded by inter-cardinal bearings from the point marked.

Primitive: point

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Coast Guard Station (CoastGuardStation ) - CGUSTA

Definition: A station at which a visual/radio/radar marine watch is kept either continuously or at certain times only.

Primitive: point, surface

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Chart 1 Feature (Chart1Feature )

Definition: A feature which exists to support the rendering of graphics or text in order to provide additional information that cannot be encoded using other features.

Primitive: point, pointSet, curve, surface

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Data Coverage (DataCoverage ) - M_COVR, M_CSCL

Definition: A geographical area that describes the coverage and extent of spatial objects.

Primitive: surface

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Dyke (Dyke ) - DYKCON, Dike

Definition: A dyke (or dike) is an artificial embankment to contain or hold back water.

Primitive: curve, surface

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Distance Mark (DistanceMark ) - DISMAR

Definition: A distance mark indicates the distance measured from an origin and consists of either a solid visible structure or a distinct location without special installation. Usually found on canals.

Primitive: point

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Dam (Dam ) - DAMCON

Definition: A barrier to check or confine anything in motion; particularly one constructed to hold back water and raise its level to form a reservoir, or to prevent flooding.

Primitive: curve, surface

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Dolphin (Dolphin )

Definition: A post or group of posts, used for mooring or warping a vessel, or as an aid to navigation. The dolphin may be in the water, on a wharf or on the beach.

Primitive: point, surface

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Dry Dock (DryDock ) - DRYDOC, Graving Dock

Definition: An artificial basin fitted with a gate or caisson, into which vessels can be floated and the water pumped out to expose the vessel's bottom. Also called graving dock.

Primitive: surface

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Dock Area (DockArea ) - DOCARE

Definition: An artificially enclosed area within which ships may moor and which may have gates to regulate water level.

Primitive: surface

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Dredged Area (DredgedArea ) - DRGARE

Definition: An area of the bottom of a body of water which has been deepened by dredging.

Primitive: surface

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Depth Contour (DepthContour ) - DEPCNT, Depth Curve

Definition: A line connecting points of equal water depth which is sometimes significantly displaced outside of soundings, symbols, and other chart detail for clarity as well as generalization. Depth contours therefore often represent an approximate location of the line of equal depth as related to the surveyed line delineated on the source.

Primitive: curve

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Depth Area (DepthArea ) - DEPARE

Definition: A water area whose depth is within a defined range of values.

Primitive: surface

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Depth - No Bottom Found (DepthNoBottomFound ) - SOUNDG (QUASOU = 5)

Definition: Upon investigation the bottom was not found at this depth.

Primitive: pointSet

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Discoloured Water (DiscolouredWater ) - CTNARE

Definition: Unnatural coloured areas in the sea which may or may not indicate the existence of shoals.

Primitive: point, surface

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Deep Water Route Centreline (DeepWaterRouteCentreline ) - DWRTCL

Definition: The Deep Water route centreline indicates the centreline of a route, the width of which is not explicitly defined.

Primitive: curve

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Deep Water Route Part (DeepWaterRoutePart ) - DWRTPT

Definition: An area of a deep water route within which ships proceed in the same direction.

Primitive: surface

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Deep Water Route (DeepWaterRoute ) - C_AGGR

Definition: A route within defined limits which has been accurately surveyed for clearance of sea bottom and submerged obstacles as indicated on the chart.

Primitive: surface, noGeometry

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Dumping Ground (DumpingGround ) - DMPGRD

Definition: A sea area where dredged material or other potentially more harmful material, for example explosives, chemical waste, is deliberately deposited.

Primitive: point, surface

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Daymark (Daymark ) - DAYMAR

Definition: The identifying characteristics of an aid to navigation which serve to facilitate its recognition against a daylight viewing background. On those structures that do not by themselves present an adequate viewing area to be seen at the required distance, the aid is made more visible by affixing a daymark to the structure. A daymark so affixed has a distinctive colour and shape depending on the purpose of the aid.

Primitive: point

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Exclusive Economic Zone (ExclusiveEconomicZone ) - EXEZNE

Definition: An area, not exceeding 200 nautical miles from the baselines from which the breadth of the territorial sea is measured, subject to a specific legal regime established in the United Nations Convention on the Law of the Sea under which the coastal state has certain rights and jurisdiction.

Primitive: curve, surface

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Emergency Wreck Marking Buoy (EmergencyWreckMarkingBuoy )

Definition: An emergency wreck marking buoy is a buoy moored on or above a new wreck, designed to provide a prominent (both visual and radio) and easily identifiable temporary first response.

Primitive: point

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Fence/Wall (FenceWall ) - FNCLNE

Definition: A man-made barrier used as an enclosure or boundary or for protection.

Primitive: curve

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Fortified Structure (FortifiedStructure ) - FORSTC

Definition: A structure that is specifically designed or reinforced to provide for defence from armed attack.

Primitive: point, curve, surface

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Floating Dock (FloatingDock ) - FLODOC

Definition: A form of dry dock consisting of a floating structure of one or more sections which can be partly submerged by controlled flooding to receive a vessel, then raised by pumping out the water so that the vessel's bottom can be exposed.

Primitive: curve, surface

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Foul Ground (FoulGround ) - OBSTRN (CATOBS = 7)

Definition: Areas over which it is safe to navigate but which should be avoided for anchoring, taking the ground or ground fishing.

Primitive: point, surface

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Fishing Facility (FishingFacility ) - FSHFAC

Definition: A structure for fishing purposes which can be an obstruction to ships in general. The position of these structures may vary frequently over time.

Primitive: point, curve, surface

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Fairway (Fairway ) - FAIRWY

Definition: That part of a river, harbour and so on, where the main navigable channel for vessels of larger size lies. It is also the usual course followed by vessels entering or leaving harbours, called 'ship channel'.

Primitive: surface

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Fairway System (FairwaySystem ) - C_AGGR

Definition: That part of a river, harbour and so on, where the main navigable channel for vessels of larger size lies. It is also the usual course followed by vessels entering or leaving harbours, called 'ship channel'. A fairway system is an aggregation of connected fairway features making up a complex fairway system.

Primitive: surface, noGeometry

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Ferry Route (FerryRoute ) - FERYRT

Definition: A route in a body of water where a ferry crosses from one shoreline to another.

Primitive: curve, surface

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Fishery Zone (FisheryZone ) - FSHZNE, Fishing Zone

Definition: The offshore zone in which exclusive fishing rights and management are held by the coastal nation.

Primitive: surface

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Fishing Ground (FishingGround ) - FSHGRD, Fishing Area, Fishing Zone

Definition: A water area in which fishing is frequently carried on.

Primitive: surface

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Free Port Area (FreePortArea ) - FRPARE

Definition: A port where certain import and export duties are waived (unless goods pass into the country) to facilitate reshipment to other countries.

Primitive: surface

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Fog Signal (FogSignal ) - FOGSIG

Definition: A warning signal transmitted by a vessel, or aid to navigation, during periods of low visibility. Also, the device producing such a signal.

Primitive: point

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Gate (Gate ) - GATCON

Definition: A structure that may be swung, drawn, or lowered to block an entrance or passageway on a watercourse.

Primitive: point, curve, surface

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Gridiron (Gridiron ) - GRIDRN, Careening Grid

Definition: A structure in the intertidal zone serving as a support for vessels at low stages of the tide to permit work on the exposed portion of the vessel's hull.

Primitive: surface

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Helipad (Helipad )

Definition: A site on which helicopters may land and take off.

Primitive: point

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Hulk (Hulk ) - HULKES

Definition: The hull of a wrecked or condemned ship, from which the fittings and superstructure have usually been removed, which is moored in a permanent position or grounded. It may be abandoned or put to some other use.

Primitive: point, surface

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Harbour Area (Administrative) (HarbourAreaAdministrative ) - HRBARE

Definition: The area over which a harbour authority has jurisdiction.

Primitive: surface

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Harbour Facility (HarbourFacility ) - HRBFAC

Definition: A harbour installation with a service or commercial operation of public interest.

Primitive: point, surface

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Island Group (IslandGroup ) - C_AGGR

Definition: A named group of islands, including archipelagos.

Primitive: surface, noGeometry

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Ice Area (IceArea ) - ICEARE

Definition: An area of ice over land or water.

Primitive: surface

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Inshore Traffic Zone (InshoreTrafficZone ) - ISTZNE

Definition: A routeing measure comprising a designated area between the landward boundary of a traffic separation scheme and the adjacent coast, to be used in accordance with the provisions of the International Regulations for Preventing Collisions at Sea.

Primitive: surface

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Information Area (InformationArea ) - M_NPUB

Definition: An area for which general information regarding navigation, but not directly related to safety of navigation, is available.

Primitive: point, surface

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Isolated Danger Buoy (IsolatedDangerBuoy ) - BOYISD

Definition: An isolated danger buoy is a buoy moored on or above an isolated danger of limited extent, which has navigable water all around it.

Primitive: point

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Installation Buoy (InstallationBuoy ) - BOYINB

Definition: An installation buoy is a buoy used for loading tankers with gas or oil.

Primitive: point

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Isolated Danger Beacon (IsolatedDangerBeacon ) - BCNISD

Definition: An isolated danger beacon is a beacon erected on an isolated danger of limited extent, which has navigable water all around it.

Primitive: point

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Local Direction of Buoyage (LocalDirectionOfBuoyage ) - M_NSYS

Definition: An area within which the navigational system of marks has been established in relation to a specific direction.

Primitive: surface

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Local Magnetic Anomaly (LocalMagneticAnomaly ) - LOCMAG, Local Attraction, Magnetic Anomaly, Local Magnetic Disturbance

Definition: An anomaly of the magnetic field of the Earth, extending over a relatively small area, due to local magnetic influences. Also called local attraction or magnetic anomaly.

Primitive: point, curve, surface

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Land Area (LandArea ) - LNDARE

Definition: The solid portion of the Earth's surface, as opposed to sea, water.

Primitive: point, curve, surface

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Land Elevation (LandElevation ) - LNDELV

Definition: An elevation is the vertical distance of a point or a level, on, or affixed to, the surface of the earth, measured from a specified vertical datum.

Primitive: point, curve

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Lake (Lake ) - LAKARE

Definition: A large body of water entirely surrounded by land.

Primitive: surface

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Land Region (LandRegion ) - LNDRGN

Definition: An area of natural or cultivated scenery defined by its geographical characteristics and may be known by its proper name.

Primitive: point, curve, surface

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Landmark (Landmark ) - LNDMRK

Definition: Any prominent object at a fixed location on land which can be used in determining a location or a direction.

Primitive: point, curve, surface

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Lock Basin (LockBasin ) - LOKBSN

Definition: A wet dock in a waterway, permitting a ship to pass from one level to another.

Primitive: surface

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Log Pond (LogPond ) - LOGPON

Definition: A maritime area enclosed with connected floating timbers used as a staging area for sawn logs.

Primitive: point, surface

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Light All Around (LightAllAround ) - LIGHTS

Definition: An all around light is a light that is visible over the whole horizon of interest to marine navigation and having no change in the characteristics of the light.

Primitive: point

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Light Sectored (LightSectored ) - LIGHTS, Sector Light

Definition: A light presenting different appearances (in particular, different colours) over various parts of the horizon of interest to maritime navigation.

Primitive: point

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Light Fog Detector (LightFogDetector )

Definition: A fog detector light is a light used to automatically determine conditions of visibility which warrant the turning on or off of a sound signal.

Primitive: point

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Light Air Obstruction (LightAirObstruction ) - LIGHTS

Definition: An air obstruction light is a light marking an obstacle which constitutes a danger to air navigation.

Primitive: point

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Lateral Buoy (LateralBuoy ) - BOYLAT

Definition: A lateral buoy is used to indicate the port or starboard hand side of the route to be followed. They are generally used for well-defined channels and are used in conjunction with a conventional direction of buoyage.

Primitive: point

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Lateral Beacon (LateralBeacon ) - BCNLAT

Definition: A lateral beacon is used to indicate the port or starboard hand side of the route to be followed. They are generally used for well defined channels and are used in conjunction with a conventional direction of buoyage.

Primitive: point

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Light Float (LightFloat ) - LITFLT

Definition: A boat-like structure used instead of a light buoy in waters where strong streams or currents are experienced, or when a greater elevation than that of a light buoy is necessary.

Primitive: point

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Light Vessel (LightVessel ) - LITVES, Lightship

Definition: A distinctively marked vessel anchored or moored at a charted point, to serve as an aid to navigation. By night, it displays a characteristic light(s) and is usually equipped with other devices, such as fog signal, submarine sound signal, and radio-beacon, to assist navigation.

Primitive: point

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Magnetic Variation (MagneticVariation ) - MAGVAR, Magnetic Declination, Variation

Definition: The angle between the magnetic and geographic meridians at any place, expressed in degrees east or west to indicate the direction of magnetic north from true north. Also called magnetic declination.

Primitive: point, curve, surface

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Mooring Trot (MooringTrot ) - C_AGGR

Definition: A mooring is a place where a vessel may be secured. A mooring trot is a mooring that is composed of ground tackle, mooring cables, buoys and mooring berths on junction cables.

Primitive: surface, noGeometry

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Marine Farm/Culture (MarineFarmCulture ) - MARCUL

Definition: An assemblage of cages, nets, rafts and floats or posts where fish, including shellfish, are artificially cultivated.

Primitive: point, curve, surface

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Mooring Area (MooringArea )

Definition: An area in which vessels may be secured to mooring buoys

Primitive: point, surface

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Military Practice Area (MilitaryPracticeArea ) - MIPARE, Exercise Area

Definition: An area within which naval, military or aerial exercises are carried out.

Primitive: point, surface

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Marine Pollution Regulations Area (MarinePollutionRegulationsArea )

Definition: The International Convention for the Prevention of Pollution from Ships (MARPOL) is the main international convention covering prevention of pollution of the marine environment by ships from operational or accidental causes.

Primitive: surface

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Mooring Buoy (MooringBuoy )

Definition: A buoy secured to the bottom by permanent moorings with means for mooring a vessel by use of its anchor chain or mooring lines.

Primitive: point

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Can be associated with information(s) :

Navigational System of Marks (NavigationalSystemOfMarks ) - M_NSYS

Definition: An area within which the navigational system of marks has been established in relation to a specific direction.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Navigation Line (NavigationLine ) - NAVLNE

Definition: A straight line extending towards an area of navigational interest and generally generated by two navigational aids or one navigational aid and a bearing.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Obstruction (Obstruction ) - OBSTRN

Definition: In marine navigation, anything that hinders or prevents movement, particularly anything that endangers or prevents passage of a vessel. The term is usually used to refer to an isolated danger to navigation, such as a sunken rock or pinnacle.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Offshore Platform (OffshorePlatform ) - OFSPLF

Definition: A permanent offshore structure, either fixed or floating.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Offshore Production Area (OffshoreProductionArea ) - OSPARE

Definition: An area at sea within which there are production facilities.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Oil Barrier (OilBarrier ) - OILBAR

Definition: A floating barrier to stop and contain the spread of oil on a water body surface.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pipeline Overhead (PipelineOverhead ) - PIPOHD

Definition: A string of interconnected pipes, supported by pylons and passing over or nearby navigable waters, used for the transport of matter, nowadays mainly oil or gas.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pylon/Bridge Support (PylonBridgeSupport ) - PYLONS

Definition: A vertical construction consisting, for example, of a steel framework or pre-stressed concrete to carry cables, a bridge, etc.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Production/Storage Area (ProductionStorageArea ) - PRDARE

Definition: An area on land for the exploitation or storage of natural resources.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pile (Pile ) - PILPNT

Definition: A long heavy timber or section of steel, wood, concrete, etc., forced into the earth or seafloor to serve as a support, as for a pier, or to resist lateral pressure; or as a free standing pole within a marine environment.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pontoon (Pontoon ) - PONTON

Definition: A floating structure, usually rectangular in shape which serves as landing, pier head, bridge support, etc.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pipeline Submarine/On Land (PipelineSubmarineOnLand ) - PIPSOL

Definition: A connected set of pipes for conveying liquids, slurries, or gases.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Precautionary Area (PrecautionaryArea ) - PRCARE

Definition: A routeing measure comprising an area within defined limits where ships must navigate with particular caution and within which the direction of traffic flow may be recommended.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pilotage District (PilotageDistrict )

Definition: An area within which a pilotage direction exists. Such directions are regulated by a competent harbour authority which dictates circumstances under which they apply.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Physical AIS Aid to Navigation (PhysicalAISAidToNavigation )

Definition: An Automatic Identification System (AIS) message 21 transmitted from a physical Aid to Navigation, or transmitted from an AIS station for an Aid to Navigation which physically exists.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Pilot Boarding Place (PilotBoardingPlace ) - PILBOP

Definition: A location offshore where a pilot may board a vessel in preparation to piloting it through local waters.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Quality of Non-Bathymetric Data (QualityOfNonBathymetricData ) - M_ACCY

Definition: An area within which a uniform assessment of the quality of the non-bathymetric data exists.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Quality of Bathymetric Data (QualityOfBathymetricData ) - M_QUAL

Definition: An area within which a uniform assessment of the quality of the bathymetric data exists.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Quality of Survey (QualityOfSurvey ) - M_SREL

Definition: An area within which a uniform assessment of the reliability of source survey information exists.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

River (River ) - RIVERS

Definition: A relatively large natural stream of water.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Rapids (Rapids ) - RAPIDS

Definition: Portions of a stream with accelerated current where it descends rapidly but without a break in the slope of the bed sufficient to form a waterfall. Usually used in the plural.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Runway (Runway ) - RUNWAY

Definition: A defined area, on a land aerodrome, prepared for the landing and take-off run of aircraft.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Railway (Railway ) - RAILWY

Definition: A rail or set of parallel rails on which a train, tram, or rail wagon runs.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Road (Road ) - ROADWY

Definition: A route with a specially prepared surface that is intended for use by wheeled vehicles or pedestrians.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Recommended Track (RecommendedTrack ) - RECTRC

Definition: A route which has been specially examined to ensure so far as possible that it is free of dangers and along which ships are advised to navigate.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Range System (RangeSystem ) - C_AGGR

Definition: Two or more features in the same horizontal direction, particularly those features so placed as navigational aids to mark any line of importance to vessels, as a channel. The one nearest the observer is the front mark and the one farthest from the observer is the rear mark.

Primitive: curve, surface, noGeometry

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Recommended Route Centreline (RecommendedRouteCentreline ) - RCRTCL

Definition: The recommended route centreline indicates the 'centreline' of a recommended route.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Recommended Traffic Lane Part (RecommendedTrafficLanePart ) - RCTLPT

Definition: A traffic flow pattern indicating a recommended directional movement of traffic where it is impractical or unnecessary to adopt an established direction of traffic flow.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radio Calling-In Point (RadioCallingInPoint ) - RDOCAL, Radio Reporting Point, Reporting Point, Calling-In Point

Definition: A designated position at which vessels are required to report to a traffic control centre. Also called reporting point or radio reporting point.

Primitive: point, curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radar Line (RadarLine ) - RADLNE, Radar Guided Track

Definition: Recommended tracks along which ships can be guided by coastal radar stations in the event of bad visibility.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radar Range (RadarRange ) - RADRNG

Definition: Indicates the coverage of a sea area by a radar surveillance station. Inside this area a vessel may request shore-based radar assistance, particularly in poor visibility.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radar Station (RadarStation ) - RADSTA

Definition: A station with a transmitter emitting pulses of ultra-high frequency radio waves which are reflected by solid objects and are detected upon their return to the sending station.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Restricted Area (RestrictedArea ) - RESARE

Definition: A specified area on land or water designated by an appropriate authority within which access or navigation is restricted in accordance with certain specified conditions.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Retroreflector (Retroreflector ) - RETRFL

Definition: A means of distinguishing unlighted marks at night. Retroreflective material is secured to the mark in a particular pattern to reflect back light.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radar Reflector (RadarReflector ) - RADRFL

Definition: A device capable of, or intended for, reflecting radar signals.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radio Station (RadioStation ) - RDOSTA, W/T Station

Definition: A place equipped to transmit radio waves. Such a station may be either stationary or mobile, and may also be provided with a radio receiver.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Radar Transponder Beacon (RadarTransponderBeacon ) - RTPBCN, Radar Beacon, RACON

Definition: A transponder beacon transmitting a coded signal on radar frequency, permitting an interrogating craft to determine the bearing and range of the transponder.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Rescue Station (RescueStation ) - RSCSTA, Life Saving Station

Definition: A place where equipment for saving life at sea is maintained.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Sounding Datum (SoundingDatum ) - M_SDAT

Definition: The horizontal plane or tidal datum to which soundings have been reduced. Also called datum for sounding reduction.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Sloping Ground (SlopingGround ) - SLOGRD

Definition: An inclined surface.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Slope Topline (SlopeTopline ) - SLOTOP

Definition: The upper marking of a slope, for example the ridge line or the separation line between two different gradients.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Span Fixed (SpanFixed ) - BRIDGE

Definition: A fixed component of the deck of a bridge spanning successive bridge piers.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Span Opening (SpanOpening ) - BRIDGE

Definition: An opening component of the deck of a bridge spanning successive bridge piers.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Silo/Tank (SiloTank ) - SILTNK

Definition: A large storage structure used for storing loose materials, liquids and/or gases.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Shoreline Construction (ShorelineConstruction ) - SLCONS

Definition: A fixed artificial structure in the water and/or adjoining the land. It may also refer to features such as training walls, which are not necessarily connected to, nor form part of the shoreline.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Structure Over Navigable Water (StructureOverNavigableWater )

Definition: A roofed structure erected, or partly erected, over a body of water, to provide protection for a vessel or its cargo.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Sea Area/Named Water Area (SeaAreaNamedWaterArea ) - SEAARE

Definition: A geographically defined part of the sea or other navigable waters. It may be specified within its limits by its proper name.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Sounding (Sounding ) - SOUNDG

Definition: Measured or charted depth of water (may be a drying height), or the measurement of such a depth, which has been reduced to a vertical datum.

Primitive: pointSet

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Swept Area (SweptArea ) - SWPARE

Definition: An area that has been determined to be clear of navigational dangers to a specified depth.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Seabed Area (SeabedArea ) - SBDARE

Definition: A region of the seabed including the material of which it is composed and its physical characteristics. Also called nature of bottom, character (or characteristics) of the bottom, or quality of the bottom.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Seagrass (Seagrass ) - WEDKLP (CATWED = 3)

Definition: Any of various submerged monocotyledonous plants (such as eelgrass, tape grass, and turtle grass) of tropical to temperate usually shallow coastal waters that have narrow grass-like leaves and often form dense underwater meadows.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Sandwave (Sandwave ) - SNDWAV, Sand Wave, Sand-Wave, Mega-Ripple

Definition: Large mobile wave-like sediment feature in shallow water and composed of sand. The wavelength may reach 100 metres, the amplitude may be up to 20 metres.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Spring (Spring ) - SPRING

Definition: A natural issue of water or other substances from the earth. One on the bottom of the sea is called a submarine spring.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Submarine Pipeline Area (SubmarinePipelineArea ) - PIPARE

Definition: An area containing one or more submarine pipelines.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Separation Zone or Line (SeparationZoneOrLine )

Definition: A zone or line separating the traffic lanes in which ships are proceeding in opposite, or nearly opposite directions; or separating a traffic lane from the adjacent sea area; or separating traffic lanes designated for particular classes of ships proceeding in the same direction.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Seaplane Landing Area (SeaplaneLandingArea ) - SPLARE

Definition: A designated portion of water for the landing and take-off of seaplanes.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Straight Territorial Sea Baseline (StraightTerritorialSeaBaseline ) - STSLNE

Definition: Straight baselines are a system of straight lines joining specified or discrete points on the low-water line, usually known as straight baseline turning points. Straight baselines are used in delimitation.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Submarine Transit Lane (SubmarineTransitLane ) - SUBTLN

Definition: A lane where submarines may navigate under water or at the surface.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Safe Water Buoy (SafeWaterBuoy ) - BOYSAW

Definition: A safe water buoy is used to indicate that there is navigable water around the mark.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Special Purpose/General Buoy (SpecialPurposeGeneralBuoy ) - BOYSPP

Definition: A special purpose buoy is primarily used to indicate an area or feature, the nature of which is apparent from reference to a chart, Sailing Directions or Notices to Mariners.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Safe Water Beacon (SafeWaterBeacon ) - BCNSAW

Definition: A safe water beacon is used to indicate that there is navigable water around the mark.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Special Purpose/General Beacon (SpecialPurposeGeneralBeacon ) - BCNSPP

Definition: A special purpose beacon is primarily used to indicate an area or feature, the nature of which is apparent from reference to a chart, Sailing Directions or Notices to Mariners.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Signal Station Warning (SignalStationWarning ) - SISTAW

Definition: A warning signal station is a place on shore from which warning signals are made to ships at sea.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Signal Station Traffic (SignalStationTraffic ) - SISTAT

Definition: A traffic signal station is a place on shore from which signals are made to regulate the movement of traffic.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Small Craft Facility (SmallCraftFacility ) - SMCFAC

Definition: A place at which a service generally of interest to small craft or pleasure boats is available.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Tideway (Tideway ) - TIDEWY

Definition: A channel through which a tidal current runs.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Tunnel (Tunnel ) - TUNNEL

Definition: A passage that is open to the atmosphere at both ends, buried under the seabed or laid over the seafloor or bored under the ground or through mountains.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Tidal Stream - Flood/Ebb (TidalStreamFloodEbb ) - TS_FEB

Definition: Approximate tidal stream rates given as discrete rate values for flood and ebb flow during springs.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Tidal Stream Panel Data (TidalStreamPanelData ) - TS_PAD

Definition: Approximate tidal stream characteristics given as discrete value sets at a specified interval before and/or after a high or low water.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Two-Way Route Part (TwoWayRoutePart ) - TWRTPT

Definition: An area of a two-way route within which traffic flow is generally along one bearing (and possibly its reciprocal).

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Two-Way Route (TwoWayRoute ) - C_AGGR

Definition: A route within defined limits inside which two way traffic is established, aimed at providing safe passage of ships through waters where navigation is difficult or dangerous.

Primitive: surface, noGeometry

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Traffic Separation Scheme Lane Part (TrafficSeparationSchemeLanePart ) - TSSLPT

Definition: An area within defined limits in which one-way traffic is established. Natural obstacles, including those forming separation zones, may constitute a boundary.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Traffic Separation Scheme Boundary (TrafficSeparationSchemeBoundary ) - TSSBND

Definition: The outer limit of a traffic lane part or a traffic separation scheme roundabout.

Primitive: curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Traffic Separation Scheme Crossing (TrafficSeparationSchemeCrossing ) - TSSCRS

Definition: A defined area where traffic lanes cross.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Traffic Separation Scheme Roundabout (TrafficSeparationSchemeRoundabout ) - Roundabout, TSSRON

Definition: A routeing measure comprising a separation point or circular separation zone and a circular traffic lane within defined limits. Traffic within the roundabout is separated by moving in a counter-clockwise direction around the separation point or zone.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Traffic Separation Scheme (TrafficSeparationScheme ) - C_AGGR

Definition: A routeing measure aimed at the separation of opposing streams of traffic by appropriate means and by the establishment of traffic lanes.

Primitive: surface, noGeometry

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Territorial Sea Area (TerritorialSeaArea ) - TESARE

Definition: A belt of water of a defined breadth but not exceeding 12 nautical miles measured seaward from the territorial sea baseline.

Primitive: curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Text Placement (TextPlacement )

Definition: The Text Placement feature is used in association with the Feature Name attribute or a light description to optimize text positioning in ECDIS.

Primitive: point

Attributes:

Can be associated with feature(s) :

Update Information (UpdateInformation )

Definition: The Update Information metadata feature is used to represent a change to the information shown.

Primitive: point, curve, surface, noGeometry

Attributes:

Can be associated with feature(s) :

Unsurveyed Area (UnsurveyedArea ) - UNSARE

Definition: An area where hydrographic survey data is non-existent.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Underwater/Awash Rock (UnderwaterAwashRock ) - UWTROC

Definition: A concreted mass of stony material or coral which dries, is awash or is below the water surface.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Vertical Datum of Data (VerticalDatumOfData ) - M_VDAT

Definition: Any level surface (for example Mean Sea Level) taken as a surface of reference to which the elevations within a data set are reduced. Also called datum level, reference level, reference plane, levelling datum, datum for heights.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Vegetation (Vegetation ) - VEGATN

Definition: Plants collectively or individually, especially those dominating a particular area or habitat.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Virtual AIS Aid to Navigation (VirtualAISAidToNavigation ) - NEWOBJ

Definition: An Automatic Identification System (AIS) message 21 transmitted from an AIS station to simulate on navigation systems an Aid to Navigation which does not physically exist.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Vessel Traffic Service Area (VesselTrafficServiceArea ) - ADMARE, VTS Area

Definition: The area of any service implemented by a relevant authority primarily designed to improve safety and efficiency of traffic flow and the protection of the environment. It may range from simple information messages, to extensive organisation of the traffic involving national or regional schemes.

Primitive: surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Waterfall (Waterfall ) - WATFAL

Definition: A vertically descending part of a watercourse where it falls from a height (for example: over a rock or a precipice). In place names, commonly shortened to fall or falls, for example Niagara Falls.

Primitive: point, curve

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Wind Turbine (WindTurbine ) - LNDMRK (CATLMK = 19)

Definition: A tower and associated equipment that generates electrical power from wind. They can be sited offshore and may be either fixed or floating.

Primitive: point

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Water Turbulence (WaterTurbulence ) - WATTUR

Definition: The disturbance of water caused by the interaction of any combination of waves, currents, tidal streams, wind, shoal patches and obstructions.

Primitive: point, curve, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Weed/Kelp (WeedKelp ) - WEDKLP

Definition: Any macroscopic marine alga.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Wreck (Wreck ) - WRECKS

Definition: The ruined remains of a stranded or sunken vessel which has been rendered useless.

Primitive: point, surface

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Information Types

Contact Details (ContactDetails)

Definition: Information on how to reach a person or organisation by postal, internet, telephone, telex and radio systems.

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Non-Standard Working Day (NonStandardWorkingDay)

Definition: Days when many services are not available. Often days of festivity or recreation or public holidays when normal working hours are limited, especially a national or religious festival, etc.

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Nautical Information (NauticalInformation)

Definition: Nautical information about a related area or facility.

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Service Hours (ServiceHours)

Definition: The time when a service is available and known exceptions.

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Spatial Quality (SpatialQuality)

Definition: The indication of the quality of the locational information for features in a dataset.

Attributes:

Can be associated with feature(s) :

Can be associated with information(s) :

Associations

Aids to navigation association (AidsToNavigationAssociation)

Association type: feature - feature

Definition: A feature association for the binding between navigational aids and the traffic systems (such as routeing measures) that they define.

Roles : theCollection, theComponent

ASL aggregation (ASLAggregation)

Association type: feature - feature

Definition: A feature association for the binding between an Archipelagic Sea Lane and its component features.

Roles : theCollection, theComponent

Additional information (AdditionalInformation)

Association type: feature - information

Definition: A feature association for the binding between at least one instance of a geo feature and an instance of an information type.

Roles : theInformation

Bridge aggregation (BridgeAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a bridge and its component features.

Roles : theCollection, theComponent

Caution area association (CautionAreaAssociation)

Association type: feature - feature

Definition: A feature association for the binding between a caution area and the traffic systems (such as routeing measures) to which the cautionary information applies.

Roles : theCollection, theComponent

Deep Water route aggregation (DeepWaterRouteAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a Deep Water route and its component features.

Roles : theCollection, theComponent

Fairway aggregation (FairwayAggregation)

Association type: feature - feature

Definition: A feature association for the binding between related fairways comprising a fairway system.

Roles : theCollection, theComponent

Fairway auxiliary (FairwayAuxiliary)

Association type: feature - feature

Definition: A feature association for the binding between a fairway and related features auxiliary to the fairway.

Roles : thePrimaryFeature, theAuxiliaryFeature

Island aggregation (IslandAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a named group of islands.

Roles : theCollection, theComponent

Mooring trot aggregation (MooringTrotAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a mooring trot and its component parts.

Roles : theCollection, theComponent

Pilotage District Association (PilotageDistrictAssociation)

Association type: feature - feature

Definition: A feature association for the binding between a pilotage district and its component pilot boarding places.

Roles : theCollection, theComponent

Quality of bathymetric data composition (QualityOfBathymetricDataComposition)

Association type: feature - information

Definition: The mandatory association between the quality-related characteristics of bathymetric data and the horizontal position and vertical uncertainties of the data.

Roles : theQualityInformation

Range system aggregation (RangeSystemAggregation)

Association type: feature - feature

Definition: A feature association for the binding between navigational tracks and the navigational aids that define the tracks.

Roles : theCollection, theComponent

Roofed Structure Aggregation (RoofedStructureAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a roofed structure over navigable water and its supporting features.

Roles : theRoofedStructure, theSupport

Structure/equipment (StructureEquipment)

Association type: feature - feature

Definition: A feature association for the binding between a navigation aid equipment feature and the structure that supports it.

Roles : theStructure, theEquipment

Spatial Association (SpatialAssociation)

Association type: feature - information

Definition: An association for the binding between a spatial type and its spatial quality information.

Roles : theQualityInformation

Text association (TextAssociation)

Association type: feature - feature

Definition: A feature association for the binding between a geo feature and the cartographically positioned location for text.

Roles : theCartographicText, thePositionProvider

Traffic Separation Scheme aggregation (TrafficSeparationSchemeAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a Traffic Separation Scheme or a Traffic Separation Scheme System and its component features.

Roles : theCollection, theComponent

Two-way route aggregation (TwoWayRouteAggregation)

Association type: feature - feature

Definition: A feature association for the binding between a two-way route and its component features.

Roles : theCollection, theComponent

Update Aggregation (UpdateAggregation)

Association type: feature - feature

Definition: A feature association for the binding between an Update Information feature and its component Update Information features.

Roles : theCollection, theComponent

Updated Information (UpdatedInformation)

Association type: feature - feature

Definition: A feature association for the binding between an update information metadata feature and updated feature(s) that it identifies.

Roles : theUpdate, theUpdatedObject

Attributes Details

Based On Fixed Marks (basedOnFixedMarks) - CATTRK

Type: boolean
Definition: A straight route (known as a recommended track, range or leading line), which comprises: a. at least two structures (usually beacons or daymarks) and/or natural features, which may carry lights and/or top-marks. The structures/features are positioned so that when observed to be in line, a vessel can follow a known bearing with safety. (Adapted from International Association of Lighthouse Authorities - IALA Aids to Navigation Guide, 1990); or b. a single structure or natural feature, which may carry lights and/or a topmark, and a specified bearing which can be followed with safety. (S-57 Edition 3.1, Appendix A Chapter 2, Page 2.72, November 2000, as amended).

Used by :

Beacon Shape (beaconShape) - BCNSHP

Type: enumeration
Definition: Describes the characteristic geometric form of the beacon.

LabelCodeDefinition
Stake, Pole, Perch, Post1An elongated wood or metal pole, driven into the ground or seabed, which serves as a navigational aid or a support for a navigational aid.
Withy2A tree without roots stuck or spoiled into the bottom of the sea to serve as a navigational aid.
Beacon Tower3A solid structure of the order of 10 metres in height used as a navigational aid.
Lattice Beacon4A structure consisting of strips of metal or wood crossed or interlaced to form a structure to serve as an aid to navigation or as a support for an aid to navigation.
Pile Beacon5A long heavy timber(s) or section(s) of steel, wood, concrete, etc., forced into the seabed to serve as an aid to navigation or as a support for an aid to navigation.
Cairn6A mound of stones, usually conical or pyramidal, raised as a landmark or to designate a point of importance in surveying.
Buoyant Beacon7A tall spar-like beacon fitted with a permanently submerged buoyancy chamber, the lower end of the body is secured to seabed sinker either by a flexible joint or by a cable under tension.

Used by :

Bridge Construction (bridgeConstruction) - CATBRG

Type: enumeration
Definition: The bridge’s primary shape and/or construction material.

LabelCodeDefinition
Arch1A typically curved structural member spanning an opening and serving as a support (as for the wall or other weight above the opening).
Viaduct2A structure consisting of a series of arches or towers supporting a roadway, waterway, etc., across a depression, etc.
Pontoon Bridge3A fixed floating bridge supported by pontoons.
Suspension Bridge4A fixed bridge consisting of either a roadway or a truss suspended from two or more cables which pass over towers and are anchored by backstays to a firm foundation.
Transporter Bridge5Consists of towers on each side of the watercourse connected by a system of girders on which a carriage runs.

Used by :

Bridge Function (bridgeFunction) - CATBRG

Type: enumeration
Definition: A specific role that describes the purpose of a bridge.

LabelCodeDefinition
Vehicular1Of, relating to, or designed for vehicles and especially motor vehicles.
Rail2Of, relating to, or designed for vehicles that run on a guiding track(s), especially trains.
Pedestrian3Of, relating to, or designed for walking.
Aqueduct4A bridge supporting an artificially elevated channel, for the conveyance of water.

Used by :

Building Shape (buildingShape) - BUISHP

Type: enumeration
Definition: The specific shape of the building.

LabelCodeDefinition
High-Rise Building5A building having many storeys.
Pyramid6A polyhedron of which one face is a polygon of any number of sides, and the other faces are triangles with a common vertex.
Cylindrical7Shaped like a cylinder, which is a solid geometrical figure generated by straight lines fixed in direction and describing with one of its points a closed curve, especially a circle.
Spherical8Shaped like a sphere, which is a body the surface of which is at all points equidistant from the centre.
Cubic9A shape the sides of which are six equal squares; a regular hexahedron.

Used by :

Buoy Shape (buoyShape) - BOYSHP

Type: enumeration
Definition: The principal shape and/or design of a buoy.

LabelCodeDefinition
Conical1The upper part of the body above the water-line, or the greater part of the superstructure, has approximately the shape or the appearance of a pointed cone with the point upwards.
Can2The upper part of the body above the water-line, or the greater part of the superstructure, has the shape of a cylinder, or a truncated cone that approximates to a cylinder, with a flat end uppermost.
Spherical3Shaped like a sphere, which is a body the surface of which is at all points equidistant from the centre.
Pillar4The upper part of the body above the water-line, or the greater part of the superstructure is a narrow vertical structure, pillar or lattice tower.
Spar5The upper part of the body above the water-line, or the greater part of the superstructure, has the form of a pole, or of a very long cylinder, floating upright.
Barrel6The upper part of the body above the water-line, or the greater part of the superstructure, has the form of a barrel or cylinder floating horizontally.
Superbuoy7A very large buoy designed to carry a signal light of high luminous intensity at a high elevation.
Ice Buoy8A specially constructed shuttle shaped buoy which is used in ice conditions.

Used by :

Buried Depth (buriedDepth) - BURDEP

Type: real
Definition: The depth below the seabed to which an object is buried.

Used by :

Call Sign (callSign) - CALSGN

Type: text
Definition: The designated call-sign of a station (radio station, radar station, pilot, ...).

Used by :

Category of Airport/Airfield (categoryOfAirportAirfield) - CATAIR

Type: enumeration
Definition: Classification of airport/airfield based on the primary aircraft and user group.

LabelCodeDefinition
Military Aeroplane Airport1A large military airfield usually equipped with a control tower, hangars and accommodation for the receiving and discharging of passengers or cargo.
Civil Aeroplane Airport2A large airfield usually equipped with a control tower, hangars and accommodation for the receiving and discharging of passengers or cargo.
Military Heliport3A landing place for helicopters controlled by the military.
Civil Heliport4A landing place for helicopters, often the roof of a building.
Glider Airfield5An area of land set aside for the take-off and landing of gliders.
Small Planes Airfield6An area of land set aside for the take-off and landing of small aeroplanes.
Emergency Airfield8An area of land set aside for the take-off and landing of aeroplanes or helicopters in times of emergency.
Search and Rescue Airfield9An area of land set aside for the take-off and landing of aeroplanes or helicopters in times of search and rescue.

Used by :

Category of Anchorage (categoryOfAnchorage) - CATACH

Type: enumeration
Definition: Classification of an area where different use types of vessel can remain static.

LabelCodeDefinition
Unrestricted Anchorage1An area in which vessels anchor or may anchor.
Deep Water Anchorage2An area in which vessels of deep draught anchor or may anchor.
Tanker Anchorage3An area in which tankers anchor or may anchor.
Quarantine Anchorage5An area where a vessel anchors when satisfying quarantine regulations.
Seaplane Anchorage6An area in which seaplanes anchor or may anchor.
Small Craft Anchorage7An area in which yachts and small boats anchor or may anchor.
Anchorage for Periods Up To 24 Hours9An area in which vessels anchor or may anchor for periods of up to 24 hours.
Anchorage for a Limited Period of Time10An area in which vessels may anchor for a period of time not to exceed a specific limit.
Waiting Anchorage14An area in which vessels anchor or may anchor while waiting, for example, for access to a port or berth.
Reported Anchorage15A location not defined by a regulatory authority that has been reported to be suitable and safe for anchoring.

Used by :

Category of Built-Up Area (categoryOfBuiltUpArea) - CATBUA

Type: enumeration
Definition: Human settlement classification.

LabelCodeDefinition
Urban Area1An area predominantly occupied by man-made structures used for residential, commercial, and industrial purposes.
Settlement2A continuously occupied concentration of tents or lightweight fixed structures (for example: huts) serving as residences.
Village3A self-contained group of houses and associated buildings, usually in a country area.
Town4An inhabited place larger and more regularly built and with more complete and independent local government than a village but not incorporated as a city.
City5A major town inhabited by a large permanent community with all essential services.
Holiday Village6A complex for holiday-makers with cottages, shops, and entertainment, on site, which is mainly populated on a seasonal basis.

Used by :

Category of Cable (categoryOfCable) - CATCBL

Type: enumeration
Definition: Classification of the cable based on the services provided.

LabelCodeDefinition
Power Line1A cable that transmits or distributes electrical power.
Transmission Line3Multiple un-insulated cables usually supported by steel lattice towers. Such features are generally more prominent than normal power lines.
Mooring Cable6A chain or very strong fibre or wire rope used to anchor or moor vessels or buoys.
Ferry7A vessel for transporting passengers, vehicles, and/or goods across a stretch of water, especially as a regular service.
Junction Cable9A cable used for joining components of complex marine structures, for example mooring trots.
Telecommunications Cable10A cable used for the transmission and reception of modulated communication waves/signals.

Used by :

Category of Canal (categoryOfCanal) - CATCAN

Type: enumeration
Definition: Classification of an artificial waterway used for travel, drainage, or irrigation.

LabelCodeDefinition
Transportation1A canal used for navigation as part of a transport system.
Drainage2A canal used to drain excess water from surrounding land.
Irrigation3A canal used to supply water for the purpose of irrigation.

Used by :

Category of Cardinal Mark (categoryOfCardinalMark) - CATCAM

Type: enumeration
Definition: The four quadrants (north, east, south and west) are bounded by the true bearings NW-NE, NE-SE, SE-SW and SW-NW taken from the point of interest. A cardinal mark is named after the quadrant in which it is placed. The name of the cardinal mark indicates that it should be passed to the named side of the mark.

LabelCodeDefinition
North Cardinal Mark1Quadrant bounded by the true bearing NW-NE taken from the point of interest; it should be passed to the north side of the mark.
East Cardinal Mark2Quadrant bounded by the true bearing NE-SE taken from the point of interest. It should be passed to the east side of the mark.
South Cardinal Mark3Quadrant bounded by the true bearing SE-SW taken from the point of interest; it should be passed to the south side of the mark.
West Cardinal Mark4Quadrant bounded by the true bearing SW-NW taken from the point of interest; it should be passed to the west side of the mark.

Used by :

Category of Checkpoint (categoryOfCheckpoint) - CATCHP

Type: enumeration
Definition: Classification of a place where vehicles or travellers are stopped for identification or inspection.

LabelCodeDefinition
Custom1Serves as a government checkpoint where customs duties are collected, the flow of goods are regulated and restrictions enforced, and shipments or vehicles are cleared for entering or leaving a country.

Used by :

Category of Coastline (categoryOfCoastline) - CATCOA

Type: enumeration
Definition: Physical condition of the coastline.

LabelCodeDefinition
Steep Coast1A coast backed by rock or earth cliffs, gives a good radar return and is useful for visual identification from a considerable distance off, where cliffs alternate with low lying coast along the shoreline.
Flat Coast2A level coast with no obvious topographic features.
Glacier, Seaward End6Projecting seaward extension of glacier, usually afloat.
Mangrove7One of several genera of tropical trees or shrubs which produce many prop roots and grow along low-lying coasts into shallow water.
Marshy Shore8A shoreline area made up of spongy land saturated with water. It may have a shallow covering of water, usually with a considerable amount of vegetation appearing above the surface.
Ice Coast10A vertical cliff forming the seaward edge of an ice shelf, ranging in height from 2 metres to 50 metres or more above sea level.

Used by :

Category of Conveyor (categoryOfConveyor) - CATCON

Type: enumeration
Definition: Classification of conveyor used for moving goods from one location to another.

LabelCodeDefinition
Aerial Cableway1A transportation system consisting of load cables strung between pylons on which carrier units (for example: cars or buckets intended to transport people, material, and/or equipment) are suspended.
Belt Conveyor2A conveyor along which material or people are transported by means of a moving belt.
Flume3An artificial channel, usually an inclined chute or trough, for carrying water to furnish power, transport logs down a mountainside, etc.
Lift/Elevator4Any of various mechanical devices for raising objects or materials.

Used by :

Category of Crane (categoryOfCrane) - CATCRN

Type: enumeration
Definition: Classification of machines used for hoisting and moving heavy objects.

LabelCodeDefinition
Container Crane/Gantry2A high speed, shore-based crane used in the lift-on/lift-off operation of specially constructed containers.
Sheerlegs3A tripodal structure used in dockyards and harbours for stepping masts or lifting loads in to and out of vessels.
Travelling Crane4A crane mounted on rails (track) that can move (usually parallel to the wharf face) in order to load and unload cargo vessels.
A-Frame5A type of crane shaped like the letter 'A'.
Goliath Crane6A powerful travelling crane mounted on a movable gantry of large span.

Used by :

Category of Dam (categoryOfDam) - CATDAM

Type: enumeration
Definition: Classification of a structure acting as barrier to water flow.

LabelCodeDefinition
Weir1A dam erected across a river to raise the level of the water. A fence of stakes set in a river or along the shore as a trap for fish. The word is now restricted to smaller works, the larger are called dams.
Dam2A barrier to check or confine anything in motion; particularly one constructed to hold back water and raise its level to form a reservoir, or to prevent flooding.
Flood Barrage3An opening dam across a channel which, when required, is closed to control flood waters.

Used by :

Category of Dock (categoryOfDock) - CATDOC

Type: enumeration
Definition: Classification of vessel dock.

LabelCodeDefinition
Tidal1A dock which is open to the sea and in which the water level is affected by tides.
Wet Dock2A dock in which water can be maintained at any level by closing a gate when the water is at the desired level.

Used by :

Category of Dolphin (categoryOfDolphin)

Type: enumeration
Definition: Classification of a post or group of posts, used for mooring or warping a vessel.

LabelCodeDefinition
Mooring Dolphin1A post or group of posts driven into the seabed or riverbed, used as a mooring point for vessels.
Deviation Dolphin2A post or group of posts, which a vessel may swing around for compass adjustment.
Berthing Dolphin3A post or group of posts driven into the seabed or riverbed, used to extend the berth of a vessel by providing extra mooring points.
Fender or Breasting Dolphin4A post or group of posts driven into the seabed or riverbed, used to assist in berthing of vessels by taking up some berthing loads; keep vessels from pressing against the pier structure; or to protect structures from possible impact by ships.

Used by :

Category of Dumping Ground (categoryOfDumpingGround) - CATDPG

Type: enumeration
Definition: Classification of an area based on the type of waste being disposed of.

LabelCodeDefinition
Chemical Waste Dumping Ground2An area at sea where chemical waste is dumped.
Nuclear Waste Dumping Ground3An area at sea where nuclear waste is dumped.
Explosives Dumping Ground4An area at sea where explosives are dumped.
Spoil Ground5A sea area where dredged material is deposited.
Vessel Dumping Ground6An area at sea where disused vessels are scuttled.

Used by :

Category of Fence (categoryOfFence) - CATFNC

Type: enumeration
Definition: Classification of a physical boundary.

LabelCodeDefinition
Fence1A man-made barrier of relatively light structure used as an enclosure or boundary.
Hedge3A continuous growth of shrubbery planted as a fence, a boundary or a wind break.
Wall4A solid man-made barrier of generally heavy material used as an enclosure, boundary, or for protection.

Used by :

Category of Ferry (categoryOfFerry) - CATFRY

Type: enumeration
Definition: Classification of the manoeuvrability of the ferry vessel, not the various types of ferry vessel.

LabelCodeDefinition
Free Moving Ferry1A ferry which may have routes that vary with weather, tide and traffic.
Cable Ferry2A ferry that follows a fixed route guided by a cable.
Ice Ferry3A winter-time ferry which crosses a lead.
High Speed Ferry5A high speed water vessel for civilian use.

Used by :

Category of Fishing Facility (categoryOfFishingFacility) - CATFIF

Type: enumeration
Definition: Classification of fishing facility provided based on different fishing methods.

LabelCodeDefinition
Fishing Stake1Poles or stakes placed in shallow water to outline a fishing ground or to catch fish.
Fish Trap2A structure (usually portable) for catching fish.
Fish Weir3A fence of stakes or stones set in a river or along the shore to trap fish.
Tunny Net4A net built at sea for catching tunny.

Used by :

Category of Fog Signal (categoryOfFogSignal) - CATFOG

Type: enumeration
Definition: Classification of the various means of generating the fog signal.

LabelCodeDefinition
Explosive1A signal produced by the firing of explosive charges.
Diaphone2A diaphone uses compressed air and generally emits a powerful low-pitched sound, which often concludes with a brief sound of suddenly lowered pitch, termed the 'grunt'.
Siren3A type of fog signal apparatus which produces sound by virtue of the passage of air through slots or holes in a revolving disk.
Nautophone4A horn having a diaphragm oscillated by electricity.
Reed5A reed uses compressed air and emits a weak, high pitched sound.
Tyfon6A diaphragm horn which operates under the influence of compressed air or steam.
Bell7A ringing sound with a short range.
Whistle8A distinctive sound made by a jet of air passing through an orifice. The apparatus may be operated automatically, by hand or by air being forced up a tube by waves acting on a buoy.
Gong9A sound produced by vibration of a disc when struck.
Horn10A horn uses compressed air or electricity to vibrate a diaphragm and exists in a variety of types which differ greatly in their sound and power.

Used by :

Category of Fortified Structure (categoryOfFortifiedStructure) - CATFOR

Type: enumeration
Definition: Classification of the different types of fortified structure.

LabelCodeDefinition
Castle1A large fortified building or structure.
Fort2A fortified enclosure, building, or position able to be defended against an enemy.
Battery3A fortified structure on which artillery is mounted.
Blockhouse4A concrete structure strengthened to give protection against enemy fire, with apertures to allow defensive gunfire.
Fortified Tower5A small circular fort with very thick walls (for example Martello tower).
Redoubt6An outwork or fieldwork usually square or polygonal and without flanking defences.
Fortified Submarine Shelter8A fortified pen to hold submarines.
Rampart9Anything serving as a bulwark or defence.

Used by :

Category of Gate (categoryOfGate) - CATGAT

Type: enumeration
Definition: Classification of a structure that can be swung, drawn, or lowered to block an entrance or a passageway.

LabelCodeDefinition
Flood Barrage Gate2An opening gate used to control flood water.
Caisson3A steel structure used for closing the entrance of locks, wet and dry docks.
Lock Gate4Pair of massive hinged doors at each end of a lock.
Dyke Gate5An opening gate in a dyke.
Sluice6A sliding gate or other contrivance for changing the level of a body of water by controlling the flow into or out of it.

Used by :

Category of Harbour Facility (categoryOfHarbourFacility) - CATHAF

Type: enumeration
Definition: Classification of harbour use.

LabelCodeDefinition
RoRo Terminal1A terminal for roll-on roll-off ferries.
Ferry Terminal3A terminal for passenger and vehicle ferries.
Fishing Harbour4A harbour with facilities for fishing boats.
Yacht Harbour/Marina5A harbour facility for small boats, yachts, etc., where supplies, repairs, and various services are available.
Naval Base6A centre of operations for naval vessels.
Tanker Terminal7A terminal for the bulk handling of liquid cargoes.
Passenger Terminal8A terminal for the loading and unloading of passengers.
Shipyard9A place where ships are built or repaired.
Container Terminal10A terminal with facilities to load/unload or store shipping containers.
Bulk Terminal11A terminal for the handling of bulk materials such as iron ore, coal, etc.
Ship Lift12A platform powered by synchronous electric motors (for example syncrolift) used to lift vessels (larger than boats) in and out of the water.
Straddle Carrier13A wheeled vehicle designed to lift and carry containers or vessels within its own framework. It is used for moving, and sometimes stacking, shipping containers and vessels.
Service Harbour14A harbour within which the floating equipment (dredges, tugs ...) of harbour services are stationed.
Pilotage Service15The services of a person who directs the movements of a vessel through pilot waters, usually a person who has demonstrated extensive knowledge of channels, aids to navigation, dangers to navigation, etc., in a particular area and is licensed for that area, are available.

Used by :

Category of Hulk (categoryOfHulk) - CATHLK

Type: enumeration
Definition: Classification of an old or unseaworthy ship used for a new function.

LabelCodeDefinition
Floating Restaurant1A permanently moored floating structure (for example: an old ship) that is used as a restaurant.
Historic Ship2A ship of historical interest permanently moored as a tourist attraction.
Floating Museum3A permanently moored floating structure (for example: an old ship) that is used as a museum.
Floating Accommodation4A permanently moored floating structure (for example: an old ship) that is used for accommodation.
Floating Breakwater5A permanently moored floating structure, often constructed from old ships, used as a breakwater.
Casino6A permanently moored floating structure, such as an old ship, used as a casino boat.
Training Vessel7A permanently moored floating structure, often constructed from old ships, used for training purposes.

Used by :

Category of Ice (categoryOfIce) - CATICE

Type: enumeration
Definition: Classification of ice.

LabelCodeDefinition
Fast Ice1Sea ice which remains fast, generally in the position where originally formed, and which may attain a considerable thickness. It is found along coasts, where it is attached to the shore, or over shoals, where it may be held in position by islands, grounded icebergs or grounded polar ice.
Glacier5A mass of snow and ice continuously moving from higher to lower ground or, if afloat, continuously spreading.
Polar Ice8Sea ice that is more than one year old (in contrast to winter ice). The WMO code defines polar ice as any sea ice more than one year old and more than 3 metres thick.

Used by :

Category of Installation Buoy (categoryOfInstallationBuoy) - CATINB

Type: enumeration
Definition: Classification of fixed installation buoy.

LabelCodeDefinition
Catenary Anchor Leg Mooring1Incorporates a large buoy which remains on the surface at all times and is moored by 4 or more anchors. Mooring hawsers and cargo hoses lead from a turntable on top of the buoy, so that the buoy does not turn as the ship swings to wind and stream.
Single Buoy Mooring2A large mooring buoy used by tankers to load and unload in port approaches or in offshore oil and gas fields.

Used by :

Category of Land Region (categoryOfLandRegion) - CATLND

Type: enumeration
Definition: General terms for describing landscapes.

LabelCodeDefinition
Fen1A type of bog, especially a low-lying area, wholly or partly covered with water and dominated by grass-like plants, grasses, sedges and reeds.
Marsh2An area of wet, often spongy ground that is subject to frequent flooding or tidal inundations, but not considered to be continually under water. It is characterized by the growth of non woody plants and by the lack of trees.
Bog3Wet spongy ground consisting of decaying vegetation, which retains stagnant water, too soft to bear the weight of any heavy body.
Heathland4A tract of wasteland peat bog, usually covered by a low scrubby growth, but may have scattered small open water holes.
Mountain Range5A series of connected and aligned mountains or mountain ridges.
Lowlands6Low and relatively level land at a lower elevation than adjoining areas.
Canyon Lands7A relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope.
Paddy Field8A piece of land set aside for crops which are periodically flooded (for example rice paddy).
Agricultural Land9Of or pertaining to the science or practice of cultivating the soil and rearing animals.
Savanna/Grassland10An open grassy plain with few or no trees in a tropical or subtropical region; a tract covered mainly by grasses that have little or no woody tissue.
Parkland11A piece of ground kept for ornament and/or recreation or maintained in its natural state as a public property or area.
Swamp12An area of spongy land saturated with water. It may have a shallow covering of water, usually with a considerable amount of vegetation appearing above the surface.
Landslide13The sliding down of a mass of land on a mountain or cliff-side; land which has so fallen.
Lava Flow14The substance that results from the cooling of molten rock.
Salt Pan15Shallow pools of brackish water used for the natural evaporation of sea water to obtain salt.
Moraine16Any accumulation of loose material deposited by a glacier.
Crater17Bowl-shaped cavity, at the summit or on the side of a volcano.
Cave18A natural subterranean chamber or series of chambers open to the earth's surface.
Rock Column or Pinnacle19Any high tower or spire-shaped pillar of rock, alone or cresting a summit.
Cay20A small insular feature usually with scant vegetation; usually of sand or coral. Often applied to smaller coral shoals.
Wadi21A watercourse that is permanently dry or dry except for the rainy season.

Used by :

Category of Landmark (categoryOfLandmark) - CATLMK

Type: enumeration
Definition: Classification of prominent cultural and natural features in the landscape.

LabelCodeDefinition
Cairn1A mound of stones, usually conical or pyramidal, raised as a landmark or to designate a point of importance in surveying.
Cemetery2A site and associated structures devoted to the burial of the dead.
Chimney3A vertical structure containing a passage or flue for discharging smoke and gases of combustion.
Dish Aerial4A parabolic aerial for the receipt and transmission of high frequency radio signals.
Flagstaff5A staff or pole on which flags are raised.
Flare Stack6A tall structure used for burning-off waste oil or gas.
Mast7A relatively tall structure usually held vertical by guy lines.
Windsock8A tapered fabric sleeve mounted so as to catch and swing with the wind, thus indicating the wind direction.
Monument9A structure erected and/or maintained as a memorial to a person and/or event.
Column/Pillar10A cylindrical or slightly tapering body of considerably greater length than diameter erected vertically.
Memorial Plaque11A slab of metal, usually ornamented, erected as a memorial to a person or event.
Obelisk12A tapering shaft usually of stone or concrete, square or rectangular in section, with a pyramidal apex.
Statue13A representation of a living being, sculptured, moulded, or cast in a variety of materials (for example: marble, metal, or plaster).
Cross14A monument, or other structure in form of a cross.
Dome15A landmark comprising a hemispherical or spheroidal shaped structure.
Radar Scanner16A device used for directing a radar beam through a search pattern.
Tower17A relatively tall, narrow structure that may either stand alone or may form part of another structure.
Windmill18A system of vanes attached to a tower and driven by wind (excluding wind turbines).
Spire/Minaret20A tall conical or pyramid-shaped structure often built on the roof or tower of a building, especially a church or mosque.
Large Rock or Boulder on Land21An isolated rocky formation or a single large stone.
Triangulation Mark22A recoverable point on the earth, whose geographic position has been determined by angular methods with geodetic instruments. A triangulation point is a selected point, which has been marked with a station mark, or it is a conspicuous natural or artificial feature.
Boundary Mark23A marker identifying the location of a surveyed boundary line.
Observation Wheel24Wheels with passenger cars mounted external to the rim and independently rotated by electric motors.
Torii25A form of decorative gateway or portal, consisting of two upright wooden posts connected at the top by two horizontal crosspieces, commonly found at the entrance to Shinto temples.
Bridge26A structure erected over a depression or an obstacle such as a body of water, railroad, etc., to provide a roadway for vehicles or pedestrians.
Dam27A barrier to check or confine anything in motion; particularly one constructed to hold back water and raise its level to form a reservoir, or to prevent flooding.

Used by :

Category of Lateral Mark (categoryOfLateralMark) - CATLAM

Type: enumeration
Definition: Classification of lateral marks in the IALA Buoyage System.

LabelCodeDefinition
Port-Hand Lateral Mark1Indicates the port boundary of a navigational channel or suggested route when proceeding in the "conventional direction of buoyage".
Starboard-Hand Lateral Mark2Indicates the starboard boundary of a navigational channel or suggested route when proceeding in the "conventional direction of buoyage".
Preferred Channel to Starboard Lateral Mark3At a point where a channel divides, when proceeding in the "conventional direction of buoyage", the preferred channel (or primary route) is indicated by a modified port-hand lateral mark.
Preferred Channel to Port Lateral Mark4At a point where a channel divides, when proceeding in the "conventional direction of buoyage", the preferred channel (or primary route) is indicated by a modified starboard-hand lateral mark.

Used by :

Category of Light (categoryOfLight) - CATLIT

Type: enumeration
Definition: Classification of different light types.

LabelCodeDefinition
Leading Light4A light associated with other lights so as to form a leading line to be followed.
Aero Light5An aero light is established for aeronautical navigation and may be of higher power than marine lights and visible from well offshore.
Flood Light8A broad beam light used to illuminate a structure or area.
Strip Light9A light whose source has a linear form generally horizontal, which can reach a length of several metres.
Subsidiary Light10A light placed on or near the support of a main light and having a special use in navigation.
Spotlight11A powerful light focused so as to illuminate a small area.
Front12Term used with leading lights to describe the position of the light on the lead as viewed from seaward.
Rear13Term used with leading lights to describe the position of the light on the lead as viewed from seaward.
Lower14Term used with leading lights to describe the position of the light on the lead as viewed from seaward.
Upper15Term used with leading lights to describe the position of the light on the lead as viewed from seaward.
Emergency17A light available as a backup to a main light which will be illuminated should the main light fail.
Bearing Light18A light which enables its approximate bearing to be obtained without the use of a compass.
Horizontally Disposed19A group of lights of identical character and almost identical position, that are disposed horizontally.
Vertically Disposed20A group of lights of identical character and almost identical position, that are disposed vertically.

Used by :

Category of Marine Farm/Culture (categoryOfMarineFarmCulture) - CATMFA

Type: enumeration
Definition: Classification of an area of water devoted to the raising, breeding, or production of a specific aquatic animal.

LabelCodeDefinition
Crustaceans1Hard shelled animals, for example crabs or lobsters.
Edible Bivalve Molluscs2A two-part hinged external shell covering that contains a soft-bodied invertebrate.
Fish3Vertebrate cold blooded animal with gills, living in water.
Seaweed4The general name for marine plants of the Algae class which grow in long narrow ribbons.
Pearl Culture Farm5An area where pearls are artificially cultivated.

Used by :

Category of Military Practice Area (categoryOfMilitaryPracticeArea) - CATMPA

Type: enumeration
Definition: Classification of area by military use.

LabelCodeDefinition
Torpedo Exercise Area2An area within which exercises are carried out with torpedoes.
Submarine Exercise Area3An area within which submarine exercises are carried out.
Firing Danger Area4Areas for bombing and missile exercises.
Mine-Laying Practice Area5An area within which mine laying exercises are carried out.
Small Arms Firing Range6An area for shooting pistols, rifles and machine guns etc. at a target.

Used by :

Category of Mooring Area (categoryOfMooringArea)

Type: enumeration
Definition: Classification of an area in which vessels may be secured to mooring buoys.

LabelCodeDefinition
Small Craft Mooring Area1An area in which yachts and small boats moor.
Mooring Area for Visitors2An area set aside for the mooring of visiting vessels.
Mooring Area for Tankers3An area set aside for the mooring of tankers.

Used by :

Category of Navigation Line (categoryOfNavigationLine) - CATNAV

Type: enumeration
Definition: Classification of route guidance given to vessels.

LabelCodeDefinition
Clearing Line1A straight line that marks the boundary between a safe and a dangerous area or that passes clear of a navigational danger.
Transit Line2A line passing through one or more fixed marks.
Leading Line Bearing a Recommended Track3A line passing through one or more clearly defined objects, along the path of which a vessel can approach safely up to a certain distance off.

Used by :

Category of Obstruction (categoryOfObstruction) - CATOBS

Type: enumeration
Definition: Classification of objects that impede movement.

LabelCodeDefinition
Snag/Stump1A tree, branch or broken pile embedded in the ocean floor, river or lake bottom and not visible on the surface, forming thereby a hazard to vessels.
Wellhead2A submarine structure projecting some distance above the seabed and capping a temporarily abandoned or suspended oil or gas well.
Diffuser3A structure on an outfall through which liquids are discharged. The structure will usually project above the level of the outfall and can be an obstruction to navigation.
Crib4A permanent marine structure usually designed to support or elevate pipelines; especially a structure enclosing a screening device at the offshore end of a potable water intake pipe. The structure is commonly a heavy timber enclosure that has been sunken with rocks or other debris.
Fish Haven5Areas established by private interests, usually sport fishermen, to simulate natural reefs and wrecks that attract fish. The reefs are constructed by dumping assorted junk in areas which may be of very small extent or may stretch a considerable distance along a depth contour.
Foul Area6An area of numerous unidentified dangers to navigation. The area serves as a warning to the mariner that all dangers are not identified individually and that navigation through the area may be hazardous.
Ice Boom8Floating barriers, anchored to the bottom, used to deflect the path of floating ice in order to prevent the obstruction of locks, intakes, etc., and to prevent damage to bridge piers and other structures.
Ground Tackle9Equipment such as anchors, concrete blocks, chains and cables, etc., used to position floating structures such as trot and mooring buoys etc.
Boom10A floating barrier used to protect a river or harbour mouth or to create a sheltered area for storage purposes.
Wave Energy Device12A device to extract energy from the surface motion of ocean waves or from pressure fluctuations below the surface.
Subsurface Ocean Data Acquisition System13A submerged device, not being a ship, together with its appurtenant equipment, deployed at sea essentially for the purpose of collecting, storing or transmitting samples or data relating to the marine environment.
Artificial Reef14A man-made structure that may mimic some of the characteristics of a natural reef, intended to attract sea life.
Template15A structure placed on the seafloor below a drilling rig to guide the drill.
Manifold16A large steel structure up to 20 metres in height above the seafloor, or a steel frame secured to the seafloor with piles to anchor the end of a submarine pipeline, for delivery to a production platform.
Submerged Pingo17A hill of soil-covered ice pushed up by hydrostatic pressure in an area of permafrost that is located underwater.
Remains of Platform18The distributed remains of a platform.
Scientific Instrument19An instrument used for scientific purposes.
Underwater Turbine20Any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as a fluid passing through and entirely filling a housing around the rotor and is located underwater.
Active Submarine Volcano21An active seabed volcano, which may be submerged or projecting above the water at the chart sounding datum.
Shark Net22A submerged net placed around beaches to reduce shark attacks on swimmers.
Mangrove23One of several genera of tropical trees or shrubs which produce many prop roots and grow along low-lying coasts into shallow water.

Used by :

Category of Offshore Platform (categoryOfOffshorePlatform) - CATOFP

Type: enumeration
Definition: Classification of an offshore raised structure.

LabelCodeDefinition
Oil Rig1A temporary mobile structure, either fixed or floating, used in the exploration stages of oil and gas fields.
Production Platform2A term used to indicate a permanent offshore structure equipped to control the flow of oil or gas. It does not include entirely submarine structures.
Observation/Research Platform3A platform from which one's surroundings or events can be observed, noted or recorded such as for scientific study.
Articulated Loading Platform4A metal lattice tower, buoyant at one end and attached at the other by a universal joint to a concrete filled base on the seabed. The platform may be fitted with a helicopter platform, emergency accommodation and hawser/hose retrieval.
Single Anchor Leg Mooring5A rigid frame or tube with a buoyancy device at its upper end, secured at its lower end to a universal joint on a large steel or concrete base resting on the seabed, and at its upper end to a mooring buoy by a chain or wire.
Mooring Tower6A platform secured to the seabed and surmounted by a turntable to which ships moor.
Artificial Island7A man-made structure usually built for the exploration or exploitation of marine resources, marine scientific research, tidal observations, etc.
Floating Production, Storage and Off-Loading Vessel8An offshore facility consisting of a moored tanker/barge by which the product is extracted, stored and exported.
Accommodation Platform9A platform used primarily for eating, sleeping and recreation purposes.
Navigation, Communication and Control Buoy10A floating structure with control room, power and storage facilities, attached to the seabed by a flexible pipeline and cables.
Floating Oil Tank11A floating structure, anchored to the seabed, for storing oil.

Used by :

Category of Offshore Production Area (categoryOfOffshoreProductionArea) - CATPRA

Type: enumeration
Definition: Classification of an area at sea within which there are production facilities.

LabelCodeDefinition
Wind Farm1A collection of wind turbines that are collocated and are organized as a single power generation unit.
Wave Farm2A collection of collocated devices which harness wave energy and are organized as a single power generation unit.
Current Farm3A collection of collocated devices which harness current (for example tidal) energy and are organized as a single power generation unit.
Tank Farm4A collection of collocated large-capacity tanks in which petroleum, natural gas, or liquid petrochemicals are stored.
Seabed Material Extraction Area5An area in which materials forming, or under, the seabed are removed.
Solar Farm6A large-scale photovoltaic system (PV system) designed for the supply of merchant power into the electricity grid. They are differentiated from most building-mounted and other decentralised solar power applications because they supply power at the utility level, rather than to a local user or users. The generic expression utility-scale solar is sometimes used to describe this type of project.

Used by :

Category of Oil Barrier (categoryOfOilBarrier) - CATOLB

Type: enumeration
Definition: Classification of barriers used to prevent the unwanted spread of oil across the sea surface.

LabelCodeDefinition
Oil Retention (High Pressure Pipe)1A pipe with holes from which air blows. When the air bubbles reach the surface they form a barrier which prevents the spread of oil.
Floating Oil Barrier2A floating tube shaped structure, with a curtain (2 metre) hanging under it, below the surface, which prevents the spread of oil.

Used by :

Category of Opening Bridge (categoryOfOpeningBridge) - CATBRG

Type: enumeration
Definition: Classification of opening structures spanning and providing passage over a gap or barrier, such as a river or roadway.

LabelCodeDefinition
Swing Bridge3A movable bridge (or span thereof) which rotates in a horizontal plane about a vertical pivot to allow the passage of vessels.
Lifting Bridge4A movable bridge (or span thereof) which is capable of being lifted vertically to allow vessels to pass beneath.
Bascule Bridge5A counterpoise bridge rotated in a vertical plane about an axis at one or both ends.
Drawbridge7A general name for bridges of which part or the entire span of the bridge may be raised or drawn aside to allow ships to pass through.

Used by :

Category of Pile (categoryOfPile) - CATPLE

Type: enumeration
Definition: Classification of pile, driven into the earth as a foundation or support for a structure.

LabelCodeDefinition
Stake1An elongated wood or metal pole embedded in the seabed to serve as a marker or support.
Post3A vertical piece of timber, metal or concrete forced into the earth or seabed.
Tripodal4A single structure comprising 3 or more piles held together (sections of heavy timber, steel or concrete), and forced into the earth or seabed.
Piling5A number of piles, usually in a straight line, and usually connected or bolted together.
Area of Piles6A number of piles, usually in a straight line, but not connected by structural members.
Pipe7A vertical hollow cylinder of metal, wood, or other material forced into the earth or seabed.
Mooring Post8A post where to which something (such as a craft) can be moored.

Used by :

Category of Pilot Boarding Place (categoryOfPilotBoardingPlace) - CATPIL

Type: enumeration
Definition: Classification of pilot boarding method.

LabelCodeDefinition
Boarding by Pilot-Cruising Vessel1Pilot boards from a cruising vessel.
Boarding by Helicopter2Pilot boards by helicopter which comes out from the shore.
Pilot Comes Out from Shore3Pilot embarks from a vessel or disembarks to a vessel which comes out from the shore on request.

Used by :

Category of Pipeline/Pipe (categoryOfPipelinePipe) - CATPIP

Type: enumeration
Definition: Classification of a pipe systems use.

LabelCodeDefinition
Outfall Pipe2A pipe (generally a sewer or drainage pipe) discharging into the sea or a river.
Intake Pipe3A pipe taking water from a river or other body of water, to drive a mill or supply a canal, waterworks, etc.
Sewer4A pipe in a sewage system for carrying water or sewage to a disposal area.
Bubbler System5A submerged pipe from which warm water bubbles, preventing the surrounding water from freezing.
Supply Pipe6A pipe used for transport (supply) of gas or liquid product.
Bubble Curtain7A high pressure sub-surface pipeline (usually on the seafloor) with holes emitting a curtain of air bubbles. Its uses include: the prevention of acoustic transmission through the water; preventing the spread of surface debris or floating liquids; controlling the movement of fish.

Used by :

Category of Preference (categoryOfPreference)

Type: enumeration
Definition: The selection of a first choice compared to other options.

LabelCodeDefinition
Primary1The preferred first choice used in normal conditions.
Alternate2The preferred choice in extraordinary conditions.

Used by :

Category of Production Area (categoryOfProductionArea) - CATPRA

Type: enumeration
Definition: Classification of an area set aside for heavy industry.

LabelCodeDefinition
Quarry1An open-air excavation for the extraction of stone intended principally for use in construction.
Mine2An excavation made in the terrain for the purpose of extracting and/or exploiting natural resources.
Stockpile3A reserve stock of material, equipment or other supplies.
Power Station Area4A facility including one or more buildings and equipment used for power generation.
Refinery Area5A facility where petroleum and/or petroleum products are refined.
Timber Yard6An open tract for the storage of wooden lumber and timbers.
Factory Area7A group of buildings where goods are manufactured.
Tank Farm8A collection of collocated large-capacity tanks in which petroleum, natural gas, or liquid petrochemicals are stored.
Wind Farm9A collection of wind turbines that are collocated and are organized as a single power generation unit.
Slag Heap/Spoil Heap10Hill of refuse from a mine, industrial plant etc. on land.
Production Plant11A plant where production takes place.
Solar Farm12A large-scale photovoltaic system (PV system) designed for the supply of merchant power into the electricity grid. They are differentiated from most building-mounted and other decentralised solar power applications because they supply power at the utility level, rather than to a local user or users. The generic expression utility-scale solar is sometimes used to describe this type of project.

Used by :

Category of Pylon (categoryOfPylon) - CATPYL

Type: enumeration
Definition: Classification of the pylon based on the service it is supporting.

LabelCodeDefinition
Power Transmission Pylon/Pole1A pylon or pole that supports one or more power lines.
Telephone/Telegraph Pylon/Pole2A pylon or pole that supports one or more communication lines.
Aerial Cableway Pylon3A tower or pylon supporting steel cables which convey cars, buckets, or other suspended carrier units.
Bridge Pylon/Tower4A tower and/or pylon from which the deck of a bridge is suspended.
Bridge Pier5A pillar or abutment that supports a bridge span.
Pipeline Pylon6A tower or pylon supporting a suspended pipeline or pipelines.

Used by :

Category of Radar Station (categoryOfRadarStation) - CATRAS

Type: enumeration
Definition: Classification of radar station based on the services offered.

LabelCodeDefinition
Radar Surveillance Station1A radar station established for traffic surveillance.
Coast Radar Station2A shore-based station which the mariner can contact by radio to obtain a position.

Used by :

Category of Radar Transponder Beacon (categoryOfRadarTransponderBeacon) - CATRTB

Type: enumeration
Definition: Classification of radar transponder beacon based on functionality.

LabelCodeDefinition
Ramark, Radar Beacon Transmitting Continuously1A radar marker beacon which continuously transmits a signal appearing as a radial line on a radar screen, the line indicating the direction of the beacon. Ramarks are intended primarily for marine use. The name 'ramark' is derived from the words radar marker.
Racon, Radar Transponder Beacon2A radar beacon which returns a coded signal which provides identification of the beacon, as well as range and bearing. The range and bearing are indicated by the location of the first character received on the radar screen. The name 'racon' is derived from the words radar beacon.
Leading Racon/Radar Transponder Beacon3A radar beacon that may be used (in conjunction with at least one other radar beacon) to indicate a leading line.

Used by :

Category of Radio Station (categoryOfRadioStation) - CATROS

Type: enumeration
Definition: Classification of radio services offered by a radio station.

LabelCodeDefinition
Radio Direction-Finding Station5A radio station intended to determine only the direction of other stations by means of transmission from the latter.
Differential GNSS10Differential GNSS is implemented by placing a GNSS monitor receiver at a precisely known location. Instead of computing a navigation fix, the monitor determines the range error to every GNSS satellite it can track. These ranging errors are then transmitted to local users where they are applied as corrections before computing the navigation result.
Toran11An electronic position fixing system used mainly by aircraft.
Chaika14A low frequency electronic position fixing system using pulsed transmissions at 100 Khz.
Radio Telephone Station19The equipment needed at one station to carry on two way voice communication by radio waves only.
AIS Base Station20An AIS shore station for use by competent authorities to provide AIS service, manage the data link and enable effective ship to shore / shore to ship transmission of information.

Used by :

Category of Rescue Station (categoryOfRescueStation) - CATRSC

Type: enumeration
Definition: Classification of aid station based on life saving equipment.

LabelCodeDefinition
Rescue Station with Lifeboat1A place where equipment for saving life at sea is maintained; the type of lifeboat may vary from fast, long distance boats to inflatable inshore boats.
Rescue Station with Rocket2A life saving station equipped with line-carrying rocket apparatus.
Refuge for Shipwrecked Mariners4Shelter or protection from danger or distress at sea.
Refuge for Intertidal Area Walkers5Shelter or protection from danger in areas exposed to extreme and sudden tides or tidal streams.
Lifeboat Lying at a Mooring6A place where a lifeboat is moored ready for use.
Aid Radio Station7A radio station reserved for emergency situations; might also be a public telephone.
First Aid Equipment8A place where first aid equipment is available.

Used by :

Category of Restricted Area (categoryOfRestrictedArea) - CATREA

Type: enumeration
Definition: The official legal status of each kind of restricted area defines the kind of restriction(s), for example the restriction for a 'game reserve' may be 'entering prohibited'.

LabelCodeDefinition
Offshore Safety Zone1The area around an offshore installation within which vessels are prohibited from entering without permission. Special regulations protect installations within a safety zone and vessels of all nationalities are required to respect the zone.
Nature Reserve4A tract of land or water managed so as to preserve its flora, fauna, physical features, etc.
Bird Sanctuary5A place where birds are bred and protected.
Game Reserve6A place where wild animals or birds hunted for sport or food are kept undisturbed for private use.
Seal Sanctuary7A place where seals are protected.
Degaussing Range8An area, usually about two cables diameter, within which ships' magnetic fields may be measured; sensing instruments and cables are installed on the seabed in the range and there are cables leading from the range to a control position ashore.
Military Area9An area controlled by the military in which restrictions may apply.
Historic Wreck Area10An area around certain wrecks of historical importance to protect the wrecks from unauthorized interference by diving, salvage or deposition (including anchoring).
Navigational Aid Safety Zone12An area around a navigational aid which vessels are prohibited from entering.
Minefield14An area laid and maintained with explosive mines for defence or practice purposes.
Swimming Area18An area in which people may swim and therefore vessel movement may be restricted.
Waiting Area19An area reserved for vessels waiting to enter a harbour.
Research Area20An area where marine research takes place.
Dredging Area21An area where dredging is taking place.
Fish Sanctuary22A place where fish (including shellfish and crustaceans) are protected.
Ecological Reserve23A tract of land or water managed so as to preserve the relation of plants and living creatures to each other and to their surroundings.
No Wake Area24An area in which a vessels' speed must be reduced in order to reduce the size of the wake it produces.
Swinging Area25An area where vessels turn.
Environmentally Sensitive Sea Area27A generic term which may be used to describe a wide range of areas, considered sensitive for a variety of environmental reasons.
Particularly Sensitive Sea Area28An area that needs special protection through action by IMO because of its significance for regional ecological, socio-economic or scientific reasons and because it may be vulnerable to damage by international shipping activities.
Disengagement Area29An area near a fairway where vessels can go to clear the way or make an about turn and possibly return to a waiting area when nautical conditions impose it.
Port Security Area30An area in which defence, law and treaty enforcement, and counter-terrorism activities that fall within the port and maritime domain apply.
Coral Sanctuary31A place where coral is protected.
Recreation Area32An area within which recreational activities regularly take place and therefore vessel movement may be restricted.

Used by :

Category of Road (categoryOfRoad) - CATROD

Type: enumeration
Definition: Classification of a road based on size.

LabelCodeDefinition
Motorway1A limited access dual carriageway road specially designed for fast long-distance traffic and subject to special regulations concerning its use. It may have more than two lanes.
Major Road2A hard surfaced (metalled) road; a main through route.
Minor Road3A secondary road for local traffic.
Track/Path4Track - a rough path or way formed by use. Path - a way or track laid down for walking or made by continual treading.
Major Street5A main road, in an urban area, for through traffic.
Minor Street6A secondary road, in an urban area, for local traffic.

Used by :

Category of Schedule (categoryOfSchedule)

Type: enumeration
Definition: The type of schedule, for instance opening, closure, etc.

LabelCodeDefinition
Normal Operation1The service, office, is open, fully manned, and operating normally, or the area is accessible as usual.
Closure2The service, office, or area is closed.
Unmanned Operation3The service is available but not manned.

Used by complex attribute(s) :

Category of Sea Area (categoryOfSeaArea) - CATSEA

Type: enumeration
Definition: Classification of an area based on its physical characteristics.

LabelCodeDefinition
Gat2A natural or artificial passage or channel through shoals or steep banks, or across a line of banks lying between two channels.
Bank3An elevation of the seafloor, at depths generally less than 200 m, but sufficient for safe surface navigation, commonly found on the continental shelf or near an island.
Deep4In oceanography, an obsolete term which was generally restricted to depths greater than 6,000 m.
Bay5A wide indentation in the coastline generally smaller than a gulf and larger than a cove. For the purposes of the United Nations Convention on the Law of the Sea, a bay is a well-marked indentation whose penetration is in such proportion to the width of its mouth as to contain land locked waters and constitute more than a mere curvature of the coast.
Trench6A long, deep, asymmetrical depression with relatively steep sides, that is associated with subduction.
Basin7A depression of the seafloor more or less equidimensional in plan and of variable extent.
Mud Flats8A level tract of land, as the bed of a dry lake or an area frequently uncovered at low tide. Usually in plural.
Reef9A shallow elevation composed of consolidated material that may constitute a hazard to surface navigation.
Ledge10A rocky formation continuous with and fringing the shore.
Canyon11An elongated, narrow, steep-sided depression that generally deepens down-slope.
Narrows12A navigable narrow part of a bay, strait, river, etc.
Shoal13A shallow elevation composed of unconsolidated material that may constitute a hazard to surface navigation.
Knoll14A distinct elevation with a rounded profile less than 1000m above the surrounding relief as measured from the deepest isobath that surrounds most of the feature.
Ridge15An elongated elevation of varying complexity and size, generally having steep sides.
Seamount16A distinct generally equidimensional elevation greater than 1000m above the surrounding relief as measured from the deepest isobath that surrounds most of the feature.
Pinnacle17Any high tower or spire-shaped pillar or rock or coral, alone or cresting a summit. It may extend above the surface of the water. It may or may not be a hazard to surface navigation.
Abyssal Plain18An extensive, flat, gently sloping or nearly level region at abyssal depths.
Plateau19A large, relatively flat elevation that is higher than the surrounding relief with one or more relatively steep sides.
Spur20A subordinate ridge protruding from a larger feature.
Shelf21The flat or gently sloping region adjacent to a continent or around an island that extends from the low water line to a depth, generally about 200m, where there is a marked increase in downward slope.
Trough22A long depression generally wide and flat bottomed with symmetrical and parallel sides.
Saddle23A broad pass or col in a ridge, rise or other elevation.
Abyssal Hill24An isolated small elevation on the deep seafloor.
Apron25A gently dipping slope, with a smooth surface, commonly found around groups of islands and seamounts.
Archipelagic Apron26A gentle slope with a generally smooth surface of the seafloor, characteristically found around groups of islands or seamounts.
Borderland27A region adjacent to a continent, normally occupied by or bordering a shelf and sometimes emerging as islands, that is irregular or blocky in plan or profile, with depths well in excess of those typical of a shelf.
Continental Margin28The zone, generally consisting of shelf, slope and continental rise, separating the continent from the deep seafloor or abyssal plain or plain. Occasionally a trench may be present in place of a continental rise.
Continental Rise29A gentle slope rising from the oceanic depths towards the foot of a continental slope.
Escarpment30An elongated, characteristically linear, steep slope separating horizontal or gently sloping areas of the seafloor.
Fan31A relatively smooth, depositional feature continuously deepening away from a sediment source commonly located at the lower termination of a canyon or canyon system.
Fracture Zone32A long narrow zone of irregular topography formed by the movement of tectonic plates associated with an offset of a spreading ridge axis, characterized by steep-sided and/or asymmetrical ridges, troughs or escarpments.
Gap33A narrow break in a ridge, rise or other elevation.
Guyot34A seamount having a comparatively smooth flat top.
Hill35A distinct elevation generally of irregular shape, less than 1000m above the surrounding relief as measured from the deepest isobath that surrounds most of the feature.
Hole36A depression of limited extent with all sides rising steeply from a relatively flat bottom.
Levee37A depositional embankment bordering a canyon, valley or sea channel.
Median Valley38The axial depression of the mid-oceanic ridge system.
Moat39An annular or partially annular depression commonly located at the base of seamounts, islands and other isolated elevations.
Mountains40A natural elevation of the earth's surface rising more or less abruptly from the surrounding level, and attaining an altitude which, relatively to adjacent elevations, is impressive or notable.
Peak41A conical or pointed elevation on a larger feature such as a seamount.
Province42A geographically distinct region with a number of shared physiographic characteristics that contrast with those in the surrounding areas. This term should be modified with the generic term that best describes the majority of features in the region, for example "Seamount" in Baja California Seamount Province.
Rise43A broad elevation that generally rises gently and smoothly from the surrounding relief.
Sea Channel44An elongated, meandering depression, usually occurring on a gently sloping plain or fan.
Seamount Chain45Several seamounts in linear or arcuate alignment.
Shelf-Edge46The line along which there is a marked increase in slope at the seaward margin of a shelf.
Sill47A relatively shallow barrier between BASINS that may inhibit water movement.
Slope48The sloping region that deepens from a shelf to the point where there is a general decrease in gradient.
Terrace49A flat or gently sloping region, generally long and narrow, bounded along one edge by a steeper descending slope and along the other by a steeper ascending slope.
Valley50An elongated depression that generally widens and deepens down-slope.
Canal51An artificial waterway with no flow, or a controlled flow, used for navigation, or for draining or irrigating land (ditch).
Lake52A large body of water entirely surrounded by land.
River53A relatively large natural stream of water.
Reach54A straight section of a river, especially a navigable river between two bends; or an arm of the sea extending into the land.
Intertidal Cay55A low, flat island of sand, coral, etc. awash or submerged at high water.
Submarine Volcano56A seabed volcano, submerged at the chart sounding datum, which may or may not be active.

Used by :

Category of Shoreline Construction (categoryOfShorelineConstruction) - CATSLC

Type: enumeration
Definition: Classification of shoreline construction based on use.

LabelCodeDefinition
Breakwater1A structure protecting a shore area, harbour, anchorage, or basin from waves.
Groyne2A low artificial wall-like structure of durable material extending from the land to seaward for a particular purpose, such as to protect the coast or to force a current to scour a channel.
Mole3A form of breakwater alongside which vessels may lie on the sheltered side only; in some cases it may lie entirely within an artificial harbour, permitting vessels to lie along both sides.
Pier (Jetty)4A long, narrow structure extending into the water to afford a berthing place for vessels, to serve as a promenade, etc.
Promenade Pier5A pier built only for recreational purposes.
Wharf6A structure serving as a berthing place for vessels.
Training Wall7A wall or bank, often submerged, built to direct or confine the flow of a river or tidal current, or to promote a scour action.
Rip Rap8A layer of broken rock, cobbles, boulders, or fragments of sufficient size to resist the erosive forces of flowing water and wave action.
Revetment9Facing of stone or other material, either permanent or temporary, placed along the edge of a stream, river or canal to stabilize the bank and to protect it from the erosive action of the stream.
Sea Wall10An embankment or wall for protection against waves or tidal action along a shore or water front.
Landing Steps11Steps at the shoreline as the connection between land and water on different levels.
Ramp12A sloping structure which may include rails that can either be used, as a landing place, at variable water levels, for small vessels, landing ships, or a ferry boat, or for hauling a cradle carrying a vessel.
Slipway13The prepared and usually reinforced inclined surface on which keel- and bilge-blocks are laid for supporting a vessel under construction.
Fender14A protective structure designed to cushion the impact of a vessel and prevent damage.
Solid Face Wharf15A wharf consisting of a solid wall of concrete, masonry, wood etc., such that the water cannot circulate freely under the wharf. The type of construction affects ship-handling; for example, a solid face wharf may give shelter from tidal streams, but under certain circumstances a cushion of water may build up between such a wharf and a ship attempting to berth at it, causing difficulties in ship handling.
Open Face Wharf16A wharf supported on piles or other structures which allow free circulation of water under the wharf.
Log Ramp17An inclined plane used to dump logs into the water for transport, or to haul logs out of the water for processing.
Swimming Facility20An artificial pool or swimming enclosure, especially one in the open air, which may be constructed of wire mesh or heavy netting supported by cables, buoys or piles, for swimming in.
Quay22A wharf approximately parallel to the shoreline and accommodating ships on one side only, the other side being attached to the shore. It is usually of solid construction, as contrasted with the open pile construction usually used for piers.
Tie-Up Wall23A section of wall designated for tying-up vessels awaiting transit. Bollards and mooring devices are available for both large and small ships.

Used by :

Category of Signal Station, Traffic (categoryOfSignalStationTraffic) - CATSIT

Type: enumeration
Definition: Classification of station based on the traffic service provided.

LabelCodeDefinition
Port Control1A signal station for the control of vessels within a port.
Port Entry and Departure2A signal station for the control of vessels entering or leaving a port.
International Port Traffic3A signal station displaying International Port Traffic signals.
Berthing Signal Station4A signal station for the control of vessels when berthing.
Dock5A signal station for the control of vessels entering or leaving a dock.
Lock6A signal station for the control of vessels entering or leaving a lock.
Flood Barrage Station7A signal station for the control of vessels wishing to pass through a flood control barrage.
Bridge Passage8A signal station for the control of vessels wishing to pass under a bridge.
Dredging9A signal station indicating when dredging is in progress.
Traffic Control Light10Visual signal lights placed in a waterway to indicate to shipping the movements authorized at the time at which they are shown.

Used by :

Category of Signal Station, Warning (categoryOfSignalStationWarning) - CATSIW

Type: enumeration
Definition: Classification of station based on the warning service provided.

LabelCodeDefinition
Danger1A signal or message warning of the presence of a danger to navigation.
Maritime Obstruction2A signal or message warning of the presence of a maritime obstruction.
Cable3A signal or message warning of the presence of a cable.
Military Practice4A signal or message warning of activity in a military practice area.
Distress5A station that may receive or transmit distress signals.
Weather6A visual signal displayed to indicate a weather forecast.
Storm7A signal or message conveying information about storm conditions.
Ice Warning8A signal or message conveying information about ice conditions.
Time9An accurate signal marking a specified time or time interval. It is used primarily for determining errors of timepieces. Such signals are usually sent from an observatory by radio, but visual signals are used at some ports.
Tide10A signal or message conveying information on tidal conditions in the area in question.
Tidal Stream11A signal or message conveying information on condition of tidal currents in the area in question.
Tide Gauge12A device for measuring the height of tide. A graduated staff in a sheltered area where visual observations can be made; or it may consist of an elaborate recording instrument making a continuous graphic record of tide height against time. Such an instrument is usually actuated by a float in a pipe communicating with the sea through a small hole which filters out shorter waves.
Tide Scale13A visual scale which directly shows the height of the water above chart datum or a local datum.
Diving14A signal or message warning of diving activity.
Water Level Gauge15A device for measuring and conveying information about the water level (non-tidal) in the area in question.

Used by :

Category of Silo/Tank (categoryOfSiloTank) - CATSIL

Type: enumeration
Definition: Classification based on the product for which a silo or tank is used.

LabelCodeDefinition
Silo in General1A large storage structure used for storing loose materials.
Tank in General2A fixed structure for storing liquids.
Grain Elevator3A storage building for grain. Usually a tall frame, metal or concrete structure with an especially compartmented interior.
Water Tower4A tower supporting an elevated storage tank of water.

Used by :

Category of Slope (categoryOfSlope) - CATSLO

Type: enumeration
Definition: Classification of a stretch of ground forming a natural or artificial incline.

LabelCodeDefinition
Cutting1An excavation through high ground for a road, canal, etc.
Embankment2A man-made raised long mound of earth or other material.
Dune3A mound, ridge or hill of drifted material on the sea coast or in a desert.
Hill4A small isolated elevation, smaller than a mountain.
Pingo5A dome-shaped hill formed in a permafrost area when the hydrostatic pressure of freezing ground water causes the upheaval of a layer of frozen ground.
Cliff6Land rising abruptly for a considerable distance above the water or surrounding land.
Scree7A mass of detritus, forming a precipitous, strong slope upon a mountain-side. Also the material composing such a slope.

Used by :

Category of Small Craft Facility (categoryOfSmallCraftFacility) - CATSCF

Type: enumeration
Definition: Classification of services and facilities for the small craft user.

LabelCodeDefinition
Visitors Berth1A berth set aside for the use of visiting vessels.
Nautical Club2A club for mariners generally associated with other small craft facilities.
Boat Hoist3A hoist for lifting boats out of the water.
Sailmaker4A place where sails are made or may be taken for repair.
Boatyard5A place on shore where boats may be built, stored and repaired.
Public Inn6A public house providing food, drink and accommodation.
Restaurant7A commercial establishment serving food.
Chandler8A dealer in ships' supplies.
Provisions9A place where food and other such supplies are available.
Doctor10A place where a doctor is available to provide medical attention.
Pharmacy11A place where medical drugs are dispensed.
Water Tap12A place where fresh water is available.
Fuel Station13A place where fuel is available.
Electricity Outlet14A place where a connection to an electrical supply is available.
Bottle Gas15A place where bottled gas is available.
Showers16A place where showers are available.
Launderette17A place where there are facilities for washing clothes.
Public Toilets18A place where toilets are available for public use.
Post Box19A place where mail may be posted.
Public Telephone20A place where a telephone is available for public use.
Refuse Bin21A place where refuse may be dumped.
Car Park22A place where cars may be parked.
Parking for Boats and Trailers23A place on shore where boats and/or trailers may be parked.
Caravan Site24A place where caravans may be parked or where caravan accommodation is provided.
Camping Site25A place where visitors may pitch tents and camp.
Sewage Pump-Out Station26A place where sewage may be pumped off a vessel.
Emergency Telephone27A place where a telephone is available for emergency use only.
Landing/Launching Place for Boats28A place where boats may be landed or launched.
Scrubbing Berth30A place where vessels may berth for the purpose of careening.
Picnic Area31A place where people may go to eat a picnic.
Mechanics Workshop32A place where mechanical repairs can be undertaken to engines or other vessel equipment.
Guard and/or Security Service33A place where a vessel is patrolled by a security service or stored in a secure lockup.

Used by :

Category of Special Purpose Mark (categoryOfSpecialPurposeMark) - CATSPM

Type: enumeration
Definition: Classification of an aid to navigation which signifies some special purpose.

LabelCodeDefinition
Firing Danger Mark1A mark used to indicate a firing danger area, usually at sea.
Target Mark2Any object toward which something is directed. The distinctive marking or instrumentation of a ground point to aid its identification on a photograph.
Marker Ship Mark3A mark marking the position of a ship which is used as a target during some military exercise.
Degaussing Range Mark4A mark used to indicate a degaussing range.
Barge Mark5A mark of relevance to barges.
Cable Mark6A mark used to indicate the position of submarine cables or the point at which they run on to the land.
Spoil Ground Mark7A mark used to indicate the limit of a spoil ground.
Outfall Mark8A mark used to indicate the position of an outfall or the point at which it leaves the land.
ODAS9Ocean Data Acquisition System.
Recording Mark10A mark used to record data for scientific purposes.
Seaplane Anchorage Mark11A mark used to indicate a seaplane anchorage.
Recreation Zone Mark12A mark used to indicate a recreation zone.
Mooring Mark14A mark indicating a mooring or moorings.
LANBY15A large buoy designed to take the place of a lightship where construction of an offshore light station is not feasible.
Leading Mark16Aids to navigation or other indicators so located as to indicate the path to be followed. Leading marks identify a leading line when they are in transit.
Measured Distance Mark17A mark forming part of a transit indicating one end of a measured distance.
Notice Mark18A notice board or sign indicating information to the mariner.
TSS Mark19A mark indicating a Traffic Separation Scheme.
Anchoring Prohibited Mark20A mark indicating an anchoring prohibited area.
Berthing Prohibited Mark21A mark indicating that berthing is prohibited.
Overtaking Prohibited Mark22A mark indicating that overtaking is prohibited.
Two-Way Traffic Prohibited Mark23A mark indicating a one-way route.
Reduced Wake Mark24A mark indicating that vessels must not generate excessive wake.
Speed Limit Mark25A mark indicating that a speed limit applies.
Stop Mark26A mark indicating the place where the bow of a ship must stop when traffic lights show red.
General Warning Mark27A mark indicating that special caution must be exercised in the vicinity of the mark.
Sound Ship's Siren Mark28A mark indicating that a ship should sound its siren or horn.
Restricted Vertical Clearance Mark29A mark indicating the minimum vertical space available for passage.
Maximum Vessel's Draught Mark30A mark indicating the maximum draught of vessel permitted.
Restricted Horizontal Clearance Mark31A mark indicating the minimum horizontal space available for passage.
Strong Current Warning Mark32A mark warning of strong currents.
Berthing Permitted Mark33A mark indicating that berthing is allowed.
Overhead Power Cable Mark34A mark indicating an overhead power cable.
Channel Edge Gradient Mark35A mark indicating the gradient of the slope of a dredge channel edge.
Telephone Mark36A mark indicating the presence of a telephone.
Ferry Crossing Mark37A mark indicating that a ferry route crosses the ship route; often used with a 'sound ship's siren' mark.
Pipeline Mark39A mark used to indicate the position of submarine pipelines or the point at which they run on to the land.
Anchorage Mark40A mark indicating an anchorage area.
Clearing Mark41A mark used to indicate a clearing line.
Control Mark42A mark indicating the location at which a restriction or requirement exists.
Diving Mark43A mark indicating that diving may take place in the vicinity.
Refuge Beacon44A mark providing or indicating a place of safety.
Foul Ground Mark45A mark indicating a foul ground.
Yachting Mark46A mark installed for use by yachtsmen.
Heliport Mark47A mark indicating an area where helicopters may land.
GNSS Mark48A mark indicating a location at which a GNSS position has been accurately determined.
Seaplane Landing Mark49A mark indicating an area where seaplanes land.
Entry Prohibited Mark50A mark indicating that entry is prohibited.
Work in Progress Mark51A mark indicating that work (generally construction) is in progress.
Mark With Unknown Purpose52A mark whose detailed characteristics are unknown.
Wellhead Mark53A mark indicating a borehole that produces or is capable of producing oil or natural gas.
Channel Separation Mark54A mark indicating the point at which a channel divides separately into two channels.
Marine Farm Mark55A mark indicating the existence of a fish, mussel, oyster or pearl farm/culture.
Artificial Reef Mark56A mark indicating the existence or the extent of an artificial reef.
Ice Mark57A mark, used year round, that may be submerged when ice passes through the area.
Nature Reserve Mark58A mark used to define the boundary of a nature reserve.
Fish Aggregating Device59A fish aggregating (or aggregation) device (FAD) is a man-made object used to attract ocean going pelagic fish such as marlin, tuna and mahi-mahi (dolphin fish). They usually consist of buoys or floats tethered to the ocean floor with concrete blocks or adrift.
Wreck Mark60A mark used to indicate the existence of a wreck.
Customs Mark61A mark used to indicate the existence of a customs checkpoint.
Causeway Mark62A mark used to indicate the existence of a causeway.
Wave Recorder63A surface following buoy used to measure wave activity.

Used by :

Category of Temporal Variation (categoryOfTemporalVariation)

Type: enumeration
Definition: An assessment of the likelihood of change over time.

LabelCodeDefinition
Extreme Event1Indication of the possible impact of a significant event (for example hurricane, earthquake, volcanic eruption, landslide, etc), which is considered likely to have changed the seafloor or landscape significantly.
Likely to Change and Significant Shoaling Expected2Continuous or frequent change (for example river siltation, sand waves, seasonal storms, icebergs, etc) that is likely to result in new significant shoaling.
Likely to Change But Significant Shoaling Not Expected3Continuous or frequent change (for example sand wave shift, seasonal storms, icebergs, etc) that is not likely to result in new significant shoaling.
Likely to Change4Continuous or frequent change to non-bathymetric features (for example river siltation, glacier creep/recession, sand dunes, buoys, marine farms, etc).
Unlikely to Change5Significant change to the seafloor is not expected.
Unassessed6Not having been assessed.

Used by :

Category of Structure (categoryOfStructure)

Type: enumeration
Definition: Classification of a covered or partially covered area where different use types of vessel can berth.

LabelCodeDefinition
Boathouse1A building or shed, usually built partly over water, for sheltering a boat or boats.
Covered Bulk Terminal2A covered or partially covered terminal for the handling of bulk materials such as iron ore, coal, etc.
Covered Wharf3A covered or partially covered structure serving as a berthing place for vessels.
Covered Service Terminal4A covered or partially covered terminal within which the floating equipment (dredges, tugs …) of harbour services are berthed and serviced.
Covered Passenger Terminal5A covered or partially covered terminal for the loading and unloading of passengers.

Used by :

Category of Tidal Stream (categoryOfTidalStream) - CAT_TS

Type: enumeration
Definition: Classification of the alternating horizontal movement of water associated with the rise and fall of the tide caused by tide producing forces.

LabelCodeDefinition
Flood Stream1The horizontal movement of water associated with the rising tide. Flood streams generally set towards the shore, or in the direction of the tide progression.
Ebb Stream2The horizontal movement of water associated with falling tide. Ebb streams generally set seaward, or in the opposite direction to the tide progression.
Other Tidal Flow3Any other horizontal movement of water associated with tides, for example rotary flow.

Used by :

Category of Vegetation (categoryOfVegetation) - CATVEG

Type: enumeration
Definition: Classification of the plant life of an area or region.

LabelCodeDefinition
Bush3A shrub or clump of shrubs with stems of moderate length.
Deciduous Wood4A wood with trees that shed their leaves annually.
Coniferous Wood5A wood with evergreen trees of a group usually bearing cones, including yews, cedars and redwoods.
Wood in General (inc Mixed Wood)6Growing trees densely occupying a tract of land.
Reed11Any of various water or marsh plants with a firm stem. (Concise Oxford English Dictionary)
Tree in General13An individual woody perennial plant, typically having a single stem or trunk growing to a considerable height and bearing lateral branches at some distance from the ground.
Evergreen Tree14Having green foliage all the year round.
Coniferous Tree15A cone-bearing, needle-leaved or scale-leaved evergreen tree.
Palm Tree16A tropical or sub-tropical tree, shrub or vine having a tall, unbranched, columnar trunk. The trunk is crowned by a tuft or large, pleated fan or feather shaped leaves with stout sheathing and often prickly petioles (stalks), the persistent bases of which frequently clothe the trunk.
Nipa Palm Tree17A rare palm tree with regular branching involving equal or sub-equal division of the apex that results in forking.
Casuarina Tree18A tree characterized by slender, green, often drooping branches that are deeply grooved and that bear, at intervals, whorls of tine leaves.
Eucalypt Tree19An instance of a large genus of mostly very large trees (90 metres).
Deciduous Tree20Sheds its leaves each year at the end of the period of growth.
Filao Tree22Casuarina equisetifolia, the most widespread and well-known member of the family Casuarinaceae.

Used by :

Category of Water Turbulence (categoryOfWaterTurbulence) - CATWAT

Type: enumeration
Definition: Classification of an unstable sea state.

LabelCodeDefinition
Breakers1A wave breaking on the shore, over a reef, etc. Breakers may be roughly classified into three kinds, although the categories may overlap: spilling breakers break gradually over a considerable distance; plunging breakers tend to curl over and break with a crash; and surging breakers peak up, but then instead of spilling or plunging they surge up on the beach face. The French word 'brisant' is also used for the obstacle causing the breaking of the wave.
Eddies2Circular movements of water usually formed where currents pass obstructions, between two adjacent currents flowing counter to each other, or along the edge of a permanent current.
Overfalls3Short, breaking waves occurring when a strong current passes over a shoal or other submarine obstruction or meets a contrary current or wind.
Tide Rips4Small waves formed on the surface of water by the meeting of opposing tidal currents or by a tidal current crossing an irregular bottom. Vertical oscillation, rather than progressive waves, is characteristic of tide rips.
Bombora5A wave that forms over a submerged offshore reef or rock, sometimes (in very calm weather or at high tide) nearly swelling but in other conditions breaking heavily and producing a dangerous stretch of broken water; the reef or rock itself.

Used by :

Category of Weed/Kelp (categoryOfWeedKelp) - CATWED

Type: enumeration
Definition: Classification of marine vegetation of the algae class.

LabelCodeDefinition
Kelp1A giant plant sometimes 60 metres long with no roots, it is anchored by hold-fasts or tendrils up to 10 metres long, that cling to rock. Gas filled bubbles on fronds act as floats keeping the kelp just below the surface.
Seaweed2The general name for marine plants of the Algae class which grow in long narrow ribbons.
Sargasso4A certain type of seaweed, or more generally, a large floating mass of this seaweed.

Used by :

Category of Wreck (categoryOfWreck) - CATWRK

Type: enumeration
Definition: Classification of a wrecked or ruined ship.

LabelCodeDefinition
Non-Dangerous Wreck1A wreck which is not considered to be dangerous to surface navigation.
Dangerous Wreck2A wreck submerged at such a depth as to be considered dangerous to surface navigation.
Distributed Remains of Wreck3A substantively decayed wreck over which it is safe to navigate but which should be avoided for anchoring, taking the ground or ground fishing.
Wreck Showing Mast/Masts4Wreck of which only the mast(s) is visible at the sounding datum indicated.
Wreck Showing Any Portion of Hull or Superstructure5Wreck of which any portion of the hull or superstructure is visible at the sounding datum indicated.

Used by :

Category of Zone of Confidence In Data (categoryOfZoneOfConfidenceInData) - CATZOC, ZOC

Type: enumeration
Definition: Classification of the zone of confidence in data within an area based on the positional accuracy, survey equipment and coverage.

LabelCodeDefinition
Zone of Confidence A11Positional Accuracy +/- 5 metres + 5% depth; Depth Accuracy 0.5 metre + 1% depth; Full area search undertaken. Significant seafloor features detected and depths measured; Controlled, systematic survey, high position and depth accuracy achieved using DGPS or a minimum three high quality lines of position (LOP) and a multibeam, channel or mechanical sweep system.
Zone of Confidence A22Positional Accuracy +/- 20 metres; Depth Accuracy 1.0 metre + 2% depth; Full area search undertaken. Significant seafloor features detected and depths measured; Controlled, systematic survey achieving position and depth accuracy less than ZOC A1 and using a modern survey echosounder and a sonar or mechanical sweep system.
Zone of Confidence B3Positional Accuracy +/- 50 metres; Depth Accuracy 1.0 metre + 2% depth; Full area search not achieved, uncharted features hazardous to surface navigation are not expected but may exist; Controlled, systematic survey achieving similar depth but lesser position accuracies than ZOCA2, using a modern survey echosounder, but no sonar or mechanical sweep system.
Zone of Confidence C4Positional Accuracy +/- 500 metres; Depth Accuracy 2.0 metre + 5% depth; Full area search not achieved, depth anomalies may be expected; Low accuracy survey or data collected on an opportunity basis such as soundings on passage.
Zone of Confidence D5Positional Accuracy worse than ZOC C; Depth Accuracy worse than ZOC C; Full area search not achieved, large depth anomalies may be expected; Poor quality data or data that cannot be quality assessed due to lack of information.
Zone of Confidence U6The quality of the bathymetric data has yet to be assessed.

Used by complex attribute(s) :

Colour (colour) - COLOUR

Type: enumeration
Definition: The property possessed by an object of producing different sensations on the eye as a result of the way it reflects or emits light.

LabelCodeDefinition
White1None
Black2None
Red3None
Green4None
Blue5None
Yellow6None
Grey7None
Brown8None
Amber9None
Violet10None
Orange11None
Magenta12None
Pink13None

Used by :

Used by complex attribute(s) :

Colour Pattern (colourPattern) - COLPAT

Type: enumeration
Definition: A regular repeated design containing more than one colour.

LabelCodeDefinition
Horizontal Stripes1Straight bands or stripes of differing colours oriented horizontally.
Vertical Stripes2Straight bands or stripes of differing colours oriented vertically.
Diagonal Stripes3Straight bands or stripes of differing colours oriented diagonally (that is, not horizontally or vertically).
Squared4Often referred to as checker plate, where alternate colours are used to create squares similar to a chess or draught board. The pattern may be straight or diagonal.
Stripes (Direction Unknown)5Straight bands or stripes of differing colours oriented in an unknown direction.
Border Stripe6A band or stripe of colour which is displayed around the outer edge of the feature, which may also form a border to an inner pattern or plain colour.

Used by :

Used by complex attribute(s) :

Communication Channel (communicationChannel) - COMCHA

Type: text
Definition: A channel number assigned to a specific radio frequency, frequencies or frequency band.

Used by :

Condition (condition) - CONDTN

Type: enumeration
Definition: The various conditions of buildings and other constructions.

LabelCodeDefinition
Under Construction1Being built but not yet capable of function.
Ruined2A structure in a decayed or deteriorated condition resulting from neglect or disuse, or a damaged structure in need of repair.
Under Reclamation3An area of the sea, a lake or the navigable part of a river that is being reclaimed as land, usually by the dumping of earth and other material.
Wingless4A windmill or wind turbine from which the vanes or turbine blades are missing.
Planned Construction5Detailed planning has been completed but construction has not been initiated.

Used by :

Contact Instructions (contactInstructions)

Type: text
Definition: Instructions provided on how to contact a particular person, organisation or service.

Used by :

Used by complex attribute(s) :

Category of Cargo (categoryOfCargo)

Type: enumeration
Definition: Classification of the different types of cargo that a ship may be carrying.

LabelCodeDefinition
Bulk1Unpacked homogenous cargo poured loose in a certain space of a vessel, for example oil or grain.
Container2One of a number of standard sized cargo carrying units, secured using standard corner attachments and bar.
General3Break bulk cargo normally loaded by crane.
Liquid4Any cargo loaded by pipeline.
Passenger5A fee paying traveller.
Livestock6Live animals carried in bulk.
Dangerous or Hazardous7Dangerous or hazardous cargo as described by the IMO International Maritime Dangerous Goods code.
Heavy Lift8Indivisible heavy items of weight generally over 100 tons, and width or height greater than 100 metres.
Ballast9Material carried by a ship to ensure its stability.
Dry Bulk Cargo10Commodity cargo that is transported unpackaged in large quantities. These types of goods usually need to be kept dry during the whole transportation period.
Liquid Bulk Cargo11Liquids or gases that are transported in bulk and carried unpackaged.
Reefer Container Cargo12Cargo transported in refrigerated containers, generally perishable commodities which require temperature-controlled transportation, such as fruit, meat, fish, vegetables, dairy products and other foods.
Ro-Ro Cargo13Wheeled cargo, such as cars, busses, trucks, agricultural vehicles and cranes, that are driven on and off the ship on their own wheels or using a platform vehicle, such as a self-propelled modular transporter.
Project Cargo14Project cargo is a term used to broadly describe the national or international transportation of large, heavy, high value, or critical (to the project they are intended for) pieces of equipment. Also commonly referred to as heavy lift, this includes shipments made of various components which need disassembly for shipment and reassembly after delivery.
Break Bulk Cargo15Goods that are stowed on board ship in individually counted units, and not in intermodal containers nor in bulk as with oil or grain.

Used by :

Directional Character (directionalCharacter)

Type: complex
Definition: A directional light is a light illuminating a sector of very narrow angle and intended to mark a direction to follow.

Composed of:

Used by complex attribute(s) :

Data Assessment (dataAssessment)

Type: enumeration
Definition: The categorization of the assessment level of bathymetric data for an area.

LabelCodeDefinition
Assessed1The quality of the bathymetric data has been assessed.
Assessed (Oceanic)2The quality of oceanic bathymetric data (depths deeper than 200 metres) has been assessed, however details are not required.
Unassessed3Not having been assessed.

Used by :

Date Disused (dateDisused)

Type: S100_TruncatedDate
Definition: The date that an entity ceases to be used.

Used by :

Date End (dateEnd) - DATEND, PEREND, SUREND

Type: S100_TruncatedDate
Definition: The latest date on which an object (for example a buoy) will be present.

Used by complex attribute(s) :

Date Fixed (dateFixed)

Type: S100_TruncatedDate
Definition: The date of an event.

Used by :

Date Start (dateStart) - DATSTA, PERSTA, SURSTA

Type: S100_TruncatedDate
Definition: The earliest date on which an object (for example a buoy) will be present.

Used by complex attribute(s) :

Date Variable (dateVariable)

Type: text
Definition: A day which is not fixed in the Gregorian calendar.

Used by :

Day of Week (dayOfWeek)

Type: enumeration
Definition: Any one of seven days in a week.

LabelCodeDefinition
Sunday1The day of the week following Saturday and preceding Monday.
Monday2The day of the week following Sunday and preceding Tuesday.
Tuesday3The day of the week following Monday and preceding Wednesday.
Wednesday4The day of the week following Tuesday and preceding Thursday.
Thursday5The day of the week following Wednesday and preceding Friday.
Friday6The day of the week following Thursday and preceding Saturday.
Saturday7The day of the week following Friday and preceding Sunday.

Used by complex attribute(s) :

Day of Week is Range (dayOfWeekIsRange)

Type: boolean
Definition: A statement expressing if the days of the week identified define a range or not.

Used by complex attribute(s) :

Default Clearance Depth (defaultClearanceDepth)

Type: real
Definition: The depth value determined for an underwater hazard of unknown depth, based on the depth of the surrounding area.

Used by :

Depth Range Maximum Value (depthRangeMaximumValue) - DRVAL2

Type: real
Definition: The maximum (deepest) value of a depth range.

Used by :

Depth Range Minimum Value (depthRangeMinimumValue) - DRVAL1

Type: real
Definition: The minimum (shoalest) value of a depth range.

Used by :

Destination (destination)

Type: text
Definition: The place or general direction to which a vessel is going or directed.

Used by :

Distance Mark Visible (distanceMarkVisible) - CATDIS

Type: boolean
Definition: A statement indicating whether a distance mark is visible or not.

Used by :

Distance Unit of Measurement (distanceUnitOfMeasurement)

Type: enumeration
Definition: A specified amount of a quantity, as of length, by comparison with which any other quantity of the same kind is measured or estimated.

LabelCodeDefinition
Metres1The basic unit of length in the International System of Units (SI) system.
Yards2A common unit of linear measure in English-speaking countries, equal to 3 feet or 36 inches, and equivalent to 0.9144 metre.
Kilometres3A unit of length, the common measure of distances equal to 1000 metres, and equivalent to 3280.8 feet or 0.621 mile.
Statute Miles4A unit equal to 5280 feet.
Nautical Miles5A unit of length equal to 1,852 metres. This value was approved by the International Hydrographic Conference of 1929 and has been adopted by nearly all maritime states.

Used by complex attribute(s) :

Dredged Date (dredgedDate)

Type: S100_TruncatedDate
Definition: The date that dredging occurred.

Used by :

Drawing Index (drawingIndex)

Type: integer
Definition: A numeric value used to indicate that datasets are intended to form a seamless presentation.

Used by :

Drawing Instruction (drawingInstruction)

Type: text
Definition: Text describing one or more graphic elements that must be rendered in an end-user system.

Used by :

Elevation (elevation) - ELEVAT

Type: real
Definition: The altitude of the ground level of a feature, measured from a specified vertical datum.

Used by :

Estimated Range of Transmission (estimatedRangeOfTransmission) - ESTRNG

Type: real
Definition: The estimated range of a non-optical electromagnetic transmission.

Used by :

Exhibition Condition of Light (exhibitionConditionOfLight) - EXCLIT

Type: enumeration
Definition: The outward display of the light.

LabelCodeDefinition
Light Shown Without Change of Character1A light shown throughout the 24 hours without change of character.
Daytime Light2A light which is only exhibited by day.
Fog Light3A light which is exhibited in fog or conditions of reduced visibility.
Night Light4A light which is only exhibited at night.

Used by :

Exposition of Sounding (expositionOfSounding) - EXPSOU

Type: enumeration
Definition: Indicates the relationship of the depth of a feature to the range of depth of the surrounding depth area.

LabelCodeDefinition
Within the Range of Depth of the Surrounding Depth Area1The depth corresponds to the depth range of the surrounding depth area; that is, the depth is not shoaler than the minimum depth of the surrounding depth area or deeper than the maximum depth of the surrounding depth area.
Shoaler Than the Range of Depth of the Surrounding Depth Area2The depth is shoaler than the minimum depth of the surrounding depth area.
Deeper Than the Range of Depth of the Surrounding Depth Area3The depth is deeper than the maximum depth of the surrounding depth area.

Used by :

Feature Name (featureName)

Type: complex
Definition: Provides the name of an entity, defines the national language of the name, and provides the option to display the name at various system display settings.

Composed of:

Used by :

Features Detected (featuresDetected)

Type: complex
Definition: The uniform assessment of detected features.

Composed of:

Used by :

Fixed Date Range (fixedDateRange)

Type: complex
Definition: An active period of a single fixed event or occurrence, as the date range between discrete start and end dates.

Composed of:

Used by :

Used by complex attribute(s) :

Frequency Pair (frequencyPair)

Type: complex
Definition: A pair of frequencies for transmitting and receiving radio signals. The shore station transmits and receives on the frequencies indicated.

Composed of:

Used by :

File Locator (fileLocator)

Type: text
Definition: The location of a fragment of text or other information in a support file.

Used by complex attribute(s) :

File Reference (fileReference) - TXTDSC, NTXTDS

Type: text
Definition: The file name of an externally referenced text file.

Used by complex attribute(s) :

Flare Bearing (flareBearing)

Type: integer
Definition: The bearing about which the light flare symbol is rotated to be displayed in ECDIS.

Used by :

Flare Stack (flareStack)

Type: boolean
Definition: A tall structure used for burning-off waste oil or gas.

Used by :

Frequency Shore Station Receives (frequencyShoreStationReceives)

Type: integer
Definition: The shore station receiver frequency.

Used by complex attribute(s) :

Frequency Shore Station Transmits (frequencyShoreStationTransmits) - SIGFRQ

Type: integer
Definition: The shore station transmitter frequency.

Used by complex attribute(s) :

Full Seafloor Coverage Achieved (fullSeafloorCoverageAchieved)

Type: boolean
Definition: Expression stating if full seafloor coverage has been achieved in the area covered by hydrographic surveys.

Used by :

Function (function) - FUNCTN

Type: enumeration
Definition: A specific role that describes a feature.

LabelCodeDefinition
Harbour-Masters Office2A local official who has charge of mooring and berthing of vessels, collecting harbour fees, etc.
Customs Office3Serves as a government office where customs duties are collected, the flow of goods are regulated and restrictions enforced, and shipments or vehicles are cleared for entering or leaving a country.
Health Office4The office which is charged with the administration of health laws and sanitary inspections.
Hospital5An institution or establishment providing medical or surgical treatment for the ill or wounded.
Post Office6The public department, agency or organisation responsible primarily for the collection, transmission and distribution of mail.
Hotel7An establishment, especially of a comfortable or luxurious kind, where paying visitors are provided with accommodation, meals and other services.
Railway Station8A building with platforms where trains arrive, load, discharge and depart.
Police Station9The headquarters of a local police force and that is where those under arrest are first charged.
Water-Police Station10The headquarters of a local water-police force.
Pilot Office11The office or headquarters of pilots; the place where the services of a pilot may be obtained.
Pilot Lookout12A distinctive structure or place on shore from which personnel keep watch upon events at sea or along the coast.
Bank Office13An office for custody, deposit, loan, exchange or issue of money.
Headquarters for District Control14The quarters of an executive officer (director, manager, etc.) with responsibility for an administrative area.
Transit Shed/Warehouse15A building or part of a building for storage of wares or goods.
Factory16A building or buildings with equipment for manufacturing; a workshop.
Power Station17A stationary plant containing apparatus for large scale conversion of some form of energy (such as hydraulic, steam, chemical or nuclear energy) into electrical energy.
Administrative18A building for the management of affairs.
Educational Facility19An establishment for teaching and learning (for example school, college, university, etc).
Church20A building for public Christian worship.
Chapel21A place for Christian worship other than a parish, cathedral or church, especially one attached to a private house or institution.
Temple22A building for public Jewish worship.
Pagoda23A Hindu or Buddhist temple or sacred building.
Shinto Shrine24A building for public Shinto worship.
Buddhist Temple25A building for public Buddhist worship.
Mosque26A Muslim place of worship.
Marabout27A shrine marking the burial place of a Muslim holy man.
Lookout28Keeping a watch upon events at sea or along the coast.
Communication29Transmitting and/or receiving electronic communication signals.
Television30A system for reproducing on a screen visual images transmitted (usually with sound) by radio signals.
Radio31Transmitting and/or receiving radio-frequency electromagnetic waves as a means of communication.
Radar32A method, system or technique of using beamed, reflected, and timed radio waves for detecting, locating, or tracking objects, and for measuring altitudes.
Light Support33A structure serving as a support for one or more lights.
Microwave34Broadcasting and receiving signals using microwaves.
Cooling35Generation of chilled liquid and/or gas for cooling purposes.
Observation36A place from which the surroundings can be observed but at which a watch is not habitually maintained.
Timeball37A visual time signal in the form of a ball.
Clock38Instrument for measuring time and recording hours.
Control39Used to control the flow of traffic within a specified range of an installation.
Airship Mooring40Equipment or structure to secure an airship.
Stadium41An arena for holding and viewing events.
Bus Station42A building where buses and coaches regularly stop to take on and/or let off passengers, especially for long-distance travel.
Sea Rescue Control44A unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region.
Observatory45A building designed and equipped for making observations of astronomical, meteorological, or other natural phenomena.
Ore Crusher46A building or structure used to crush ore.
Boathouse47A building or shed, usually built partly over water, for sheltering a boat or boats.
Pumping Station48A facility to move solids, liquids or gases by means of pressure or suction.

Used by :

Horizontal Clearance Fixed (horizontalClearanceFixed)

Type: complex
Definition: The horizontal clearance measured between two points for a fixed span.

Composed of:

Used by :

Horizontal Clearance Open (horizontalClearanceOpen)

Type: complex
Definition: The horizontal clearance measured between two points for an opening span.

Composed of:

Used by :

Horizontal Position Uncertainty (horizontalPositionUncertainty)

Type: complex
Definition: The best estimate of the accuracy of a position.

Composed of:

Used by :

Used by complex attribute(s) :

Headline (headline)

Type: text
Definition: Words set at the head of a passage or page to introduce or categorize.

Used by complex attribute(s) :

Height (height) - HEIGHT

Type: real
Definition: The value of the vertical distance to the highest point of the feature, measured from a specified vertical datum.

Used by :

Horizontal Clearance Length (horizontalClearanceLength)

Type: real
Definition: The length of a feature, such as a lock or basin, which is available for safe navigation. This may, or may not, be the same as the total physical length of the feature.

Used by :

Horizontal Clearance Value (horizontalClearanceValue) - HORCLR

Type: real
Definition: The physical horizontal clearance distance between two points on a feature, such as a bridge span, dock, gate, lock or tunnel.

Used by complex attribute(s) :

Horizontal Clearance Width (horizontalClearanceWidth)

Type: real
Definition: The width of a feature, such as a lock or basin, which is available for safe navigation. This may, or may not, be the same as the total physical width of the feature.

Used by :

Horizontal Distance Uncertainty (horizontalDistanceUncertainty) - HORACC

Type: real
Definition: The best estimate of the horizontal accuracy of horizontal clearances and distances.

Used by :

Used by complex attribute(s) :

Horizontal Length (horizontalLength) - HORLEN

Type: real
Definition: A measurement of the longer of two linear axis.

Used by :

Horizontal Width (horizontalWidth) - HORWID

Type: real
Definition: A measurement of the shorter of two linear axis.

Used by :

Information (information) - INFORM

Type: complex
Definition: Textual information about the feature. The information may be provided as a string of text or as a file name of a single external text file that contains the text.

Composed of:

Used by :

Ice Factor (iceFactor) - ICEFAC

Type: real
Definition: The value of the maximum variation in the vertical clearance of an overhead cable due to an accumulation of ice.

Used by :

IMO Adopted (iMOAdopted) - CATTSS

Type: boolean
Definition: A defined maritime traffic route that has been adopted as an IMO routeing measure.

Used by :

In Dispute (inDispute)

Type: boolean
Definition: A statement that expresses if an area is in a jurisdictional dispute.

Used by :

Interoperability Identifier (interoperabilityIdentifier)

Type: URN
Definition: A common unique identifier for entities which describe a single real-world feature, and which is used to identify instances of the feature in end-user systems where the feature may be included in multiple data product types.

Used by :

In the Water (inTheWater)

Type: boolean
Definition: An indication if the feature is located in or over navigable water.

Used by :

Is MRCC (isMRCC) - Maritime Rescue and Coordination Centre

Type: boolean
Definition: A statement that expresses if a Coast Guard station performs the function of a Maritime Rescue and Coordination Centre.

Used by :

Jurisdiction (jurisdiction) - JRSDTN

Type: enumeration
Definition: The jurisdiction applicable to an administrative area.

LabelCodeDefinition
International1Involving more than one country; covering more than one national area.
National2An area administered or controlled by a single nation.
National Sub-Division3An area smaller than the nation in which it lies.

Used by :

Light Sector (lightSector)

Type: complex
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference.

Composed of:

Used by complex attribute(s) :

Language (language)

Type: text
Definition: The method of human communication, either spoken or written, consisting of the use of words in a structured and conventional way.

Used by complex attribute(s) :

Least Depth of Detected Features Measured (leastDepthOfDetectedFeaturesMeasured)

Type: boolean
Definition: Expression stating if the least depth of detected features in an area was measured.

Used by complex attribute(s) :

Lifting Capacity (liftingCapacity) - LIFCAP

Type: real
Definition: The specific safe lifting capacity of a feature.

Used by :

Light Characteristic (lightCharacteristic) - LITCHR, Character of Light

Type: enumeration
Definition: The distinct character, such as fixed, flashing, or occulting, which is given to each light to avoid confusion with neighbouring ones.

LabelCodeDefinition
Fixed1A signal light that shows continuously, in any given direction, with constant luminous intensity and colour.
Flashing2A rhythmic light in which the total duration of light in a period is clearly shorter than the total duration of darkness and all the appearances of light are of equal duration.
Long-Flashing3A single-flashing light in which an appearance of light of not less than two seconds duration is regularly repeated.
Quick-Flashing4A rhythmic light in which flashes are repeated at a rate of not less than 50 flashes per minutes but less than 80 flashes per minutes. It may be: - Continuous quick-flashing: A quick-flashing light in which a flash is regularly repeated. - Group quick-flashing: A quick-flashing light in which a group of two or more flashes, which are specified in number, is regularly repeated.
Very Quick-Flashing5A rhythmic light in which flashes are repeated at a rate of not less than 80 flashes per minute but less than 160 flashes per minute. It may be:- Continuous very quick-flashing: A very quick-flashing light in which a flash is regularly repeated.- Group very quick-flashing: A very quick-flashing light in which a group of two or more flashes, which are specified in number, is regularly repeated.
Continuous Ultra Quick-Flashing6A rhythmic light in which flashes are regularly repeated at a rate of not less than 160 flashes per minute.
Isophased7A light with all durations of light and darkness equal.
Occulting8A rhythmic light in which the total duration of light in a period is clearly longer than the total duration of darkness and all the eclipses are of equal duration. It may be: - Single-occulting: An occulting light in which an eclipse is regularly repeated. - Group-occulting: An occulting light in which a group of two or more eclipses, which are specified in number, is regularly repeated. - Composite group-occulting: An occulting light in which a sequence of groups of one or more eclipses, which are specified in number, is regularly repeated, and the groups comprise different numbers of eclipses.
Interrupted Ultra Quick-Flashing11A light in which the ultra quick flashes (160 or more per minute) are interrupted at regular intervals by eclipses of long duration.
Morse12A rhythmic light in which appearances of light of two clearly different durations are grouped to represent a character or characters in the Morse code.
Fixed and Flash13A rhythmic light in which a fixed light is combined with a flashing light of higher luminous intensity.
Flash and Long-Flash14A rhythmic light in which a flashing light is combined with a long-flashing light of higher luminous intensity.
Occulting and Flash15A rhythmic light in which an occulting light is combined with a flashing light of higher luminous intensity.
Fixed and Long-Flash16A rhythmic light in which a fixed light is combined with a long-flashing light of higher luminous intensity.
Occulting Alternating17An alternating light in which the total duration of light in each period is clearly longer than the total duration of darkness and in which the intervals of darkness (occultations) are all of equal duration.
Long-Flash Alternating18An alternating single-flashing light in which an appearance of light of not less than two seconds duration is regularly repeated.
Flash Alternating19An alternating rhythmic light in which the total duration of light in a period is clearly shorter than the total duration of darkness and all the appearances of light are of equal duration.
Quick-Flash Plus Long-Flash25A rhythmic light in which a group of quick flashes is followed by one or more long flashes in a regularly repeated sequence with a regular periodicity.
Very Quick-Flash Plus Long-Flash26A rhythmic light in which a group of very quick flashes is followed by one or more long flashes in a regularly repeated sequence with a regular periodicity.
Ultra Quick-Flash Plus Long-Flash27A rhythmic light in which a group of ultra quick flashes is followed by one or more long flashes in a regularly repeated sequence with a regular periodicity.
Alternating28A signal light that shows continuously, in any given direction, two or more colours in a regularly repeated sequence with a regular periodicity.
Fixed and Alternating Flashing29A rhythmic light in which a fixed light is combined with a flashing light of higher luminous intensity and different colour.

Used by complex attribute(s) :

Light Visibility (lightVisibility) - LITVIS

Type: enumeration
Definition: The specific visibility of a light, with respect to the light's intensity and ease of recognition.

LabelCodeDefinition
High Intensity1Non-marine lights with a higher power than marine lights and visible from well off shore (often 'Aero' lights).
Low Intensity2Non-marine lights with lower power than marine lights.
Faint3A decrease in the apparent intensity of a light which may occur in the case of partial obstructions.
Intensified4A light in a sector is intensified (that is, has longer range than other sectors).
Unintensified5A light in a sector is unintensified (that is, has shorter range than other sectors).
Visibility Deliberately Restricted6A light sector is deliberately reduced in intensity, for example to reduce its effect on a built-up area.
Obscured7Said of the arc of a light sector designated by its limiting bearings in which the light is not visible from seaward.
Partially Obscured8This value specifies that parts of the sector are obscured.
Visible in Line of Range9Lights that must be in line to be visible.

Used by :

Used by complex attribute(s) :

Line Spacing Maximum (lineSpacingMaximum)

Type: integer
Definition: The maximum distance between hydrographic survey lines.

Used by :

Line Spacing Minimum (lineSpacingMinimum)

Type: integer
Definition: The minimum distance between hydrographic survey lines.

Used by :

Linkage (linkage)

Type: URI
Definition: Location (address) for online access using a URL/URI address or similar addressing scheme.

Used by complex attribute(s) :

Measured Distance Value (measuredDistanceValue)

Type: complex
Definition: The distance value indicated on a distance mark, or the distance between two measured distance marks.

Composed of:

Used by :

Multiplicity of Features (multiplicityOfFeatures)

Type: complex
Definition: The number of features of identical character that exist as a co-located group.

Composed of:

Used by :

Magnetic Anomaly Value (magneticAnomalyValue) - VALLMA

Type: real
Definition: The value of the deviation from the normal magnetic variation.

Used by complex attribute(s) :

Major Light (majorLight)

Type: boolean
Definition: A statement expressing if a light is considered to be a major light in terms of ECDIS display in a particular area.

Used by :

Marks Navigational - System Of (marksNavigationalSystemOf) - MARSYS

Type: enumeration
Definition: The system of navigational buoyage a region complies with.

LabelCodeDefinition
IALA A1Navigational aids conform to the International Association of Lighthouse Authorities - IALA A system.
IALA B2Navigational aids conform to the International Association of Lighthouse Authorities - IALA B system.
no system9Navigational aids do not conform to any defined system.
main European inland waterway marking system11Navigational aids as required in international, national or regional regulations that contain the same navigational aids as the European Code for Inland Waterways of UNECE, or if there is no regulation for a waterway, navigational aids as recommended in the European Code for Inland Waterways of UNECE.

Used by :

Maximum Display Scale (maximumDisplayScale) - CSCALE

Type: integer
Definition: The value considered by the Data Producer to be the maximum (largest) scale at which the data is to be displayed before it can be considered to be "grossly overscaled".

Used by :

Maximum Permitted Draught (maximumPermittedDraught)

Type: real
Definition: The maximum draught of a vessel permitted along a route, in a channel or dock, at a berth, or over a submerged feature.

Used by :

Maximum Permitted Vessel Length (maximumPermittedVesselLength)

Type: real
Definition: The maximum length of a vessel permitted in a channel or dock, at a berth, or at an anchorage or mooring.

Used by :

Measured Distance (measuredDistance)

Type: integer
Definition: A course at sea, whose ends are indicated by ranges ashore, and whose length has been accurately measured for determining the speed of vessels.

Used by :

Measurement Distance Maximum (measurementDistanceMaximum) - SDISMX

Type: integer
Definition: The maximum spacing of the principal measurement lines of a hydrographic survey.

Used by :

Measurement Distance Minimum (measurementDistanceMinimum) - SDISMN

Type: integer
Definition: The minimum spacing of the principal measurement lines of a hydrographic survey.

Used by :

Minimum Display Scale (minimumDisplayScale)

Type: integer
Definition: The smallest intended viewing scale for the data.

Used by :

MMSI Code (mMSICode)

Type: text
Definition: The Maritime Mobile Service Identity (MMSI) Code is formed of a series of nine digits which are transmitted over the radio path in order to uniquely identify ship stations, ship earth stations, coast stations, coast earth stations, and group calls. These identities are formed in such a way that the identity or part thereof can be used by telephone and telex subscribers connected to the general telecommunications network principally to call ships automatically.

Used by :

Moire Effect (moireEffect)

Type: boolean
Definition: A short range (up to 2km) type of directional light. Sodium lighting gives a yellow background to a screen on which a vertical black line will be seen by an observer on the centre line.

Used by complex attribute(s) :

Multiplicity Known (multiplicityKnown)

Type: boolean
Definition: The number of features of identical character that exist as a co-located group is or is not known.

Used by complex attribute(s) :

Minimum Berth Depth (minimumBerthDepth)

Type: real
Definition: The least depth of the body of water at the berth or in a berth pocket adjacent to the berth.

Used by :

Name (name) - OBJNAM, NOBJNM

Type: text
Definition: The individual name of a feature.

Used by complex attribute(s) :

Name of Resource (nameOfResource)

Type: text
Definition: Name of the online resource.

Used by complex attribute(s) :

Name Usage (nameUsage)

Type: enumeration
Definition: Classification of the type and display level of the name of a feature in an end-user system.

LabelCodeDefinition
Default Name Display1The name is intended to be displayed when the end-user system is set to the default name/text display setting.
Alternate Name Display2The name is intended to be displayed when the end-user system is set to an alternate name/text display setting, for example an alternate language.

Used by complex attribute(s) :

Nationality (nationality) - NATION

Type: text
Definition: Identifier of membership of a particular nation.

Used by :

Nature of Construction (natureOfConstruction) - NATCON

Type: enumeration
Definition: The building's primary construction material.

LabelCodeDefinition
Masonry1Constructed of stones or bricks, usually quarried, shaped, and mortared.
Concreted2Constructed of concrete, a material made of sand and gravel that is united by cement into a hardened mass used for roads, foundations, etc.
Loose Boulders3Constructed from large stones or blocks of concrete, often placed loosely for protection against waves or water turbulence.
Hard Surfaced4Constructed with a surface of hard material, usually a term applied to roads surfaced with asphalt or concrete.
Unsurfaced5Constructed with no extra protection, usually a term applied to roads not surfaced with a hard material.
Wooden6Constructed from wood.
Metal7Constructed from metal.
Glass Reinforced Plastic8Constructed from a plastic material strengthened with fibres of glass.
Latticed11A structure of crossed wooden or metal strips usually arranged to form a diagonal pattern of open spaces between the strips.
Glass12[1] Any artificial or natural substance having similar properties and composition, as fused borax, obsidian, or the like. [2] Something made of such a substance, as a windowpane.

Used by :

Nature of Surface (natureOfSurface) - NATSUR

Type: enumeration
Definition: The general material which the land surface or the seabed is composed.

LabelCodeDefinition
Mud1Soft, wet earth.
Clay2(Particles of less than 0.002mm); stiff, sticky earth that becomes hard when baked.
Silt3An unconsolidated sediment whose particles range in size from 0.0039 to 0.0625 millimetres in diameter (between clay and sand size).
Sand4Loose material consisting of small but easily distinguishable, separate grains, between 0.0625 and 2.000 millimetres in diameter.
Stone5A general term for rock and rock fragments ranging in size from pebbles and gravel to boulders or large rock masses.
Gravel6(Particles of 2.0 - 4.0mm); small stones with coarse sand.
Pebbles7A small stone worn smooth and rounded by the action of water, sand, ice, etc. ranging in diameter between 4 and 64 millimetres.
Cobbles8A naturally rounded stone larger than a pebble.
Rock9Any formation of natural origin that constitutes an integral part of the lithosphere. The natural occurring material that forms firm, hard, and solid masses.
Lava11The fluid or semi-fluid matter flowing from a volcano. The substance that results from the cooling of the molten rock. Part of the ocean bed is composed of lava.
Coral14Hard calcareous skeletons of many tribes of marine polyps.
Shells17The hard outside covering of an animal. Part of the ocean bed is composed of numerous shells of marine animals.
Boulder18A rounded rock with diameter of 256 millimetres or larger.

Used by :

Used by complex attribute(s) :

Nature of Surface - Qualifying Terms (natureOfSurfaceQualifyingTerms) - NATQUA

Type: enumeration
Definition: The nature of various forms of natural surface materials in terms of their size, morphology and consistency.

LabelCodeDefinition
Fine1Falls within the smallest size continuum for a particular nature of surface term.
Medium2Falls within the moderate size continuum for a particular nature of surface term.
Coarse3Falls within the largest size continuum for a particular nature of surface term.
Broken4Fractured or in pieces.
Sticky5Having an adhesive or glue like property.
Soft6Not hard or firm.
Stiff7Not pliant; thick, resistant to flow.
Volcanic8Composed of or containing material ejected from a volcano.
Calcareous9Composed of or containing calcium or calcium carbonate.
Hard10Firm; usually refers to an area of the seafloor not covered by unconsolidated sediment.

Used by complex attribute(s) :

Number of Features (numberOfFeatures)

Type: integer
Definition: The number of features of identical character that exist as a co-located group.

Used by complex attribute(s) :

Online Resource (onlineResource)

Type: complex
Definition: Information about online sources from which a resource or data can be obtained.

Composed of:

Used by :

Orientation (orientation)

Type: complex
Definition: The angular distance measured from true north to the major axis of the feature.

Composed of:

Used by :

Used by complex attribute(s) :

Opening Bridge (openingBridge)

Type: boolean
Definition: A bridge that is closed when set for carrying road traffic and open when set to permit marine traffic to pass through the waterway it crosses. Modern opening (movable) bridges are either bascule, vertical lift or swing.

Used by :

Orientation Uncertainty (orientationUncertainty)

Type: real
Definition: The best estimate of the accuracy of a bearing.

Used by :

Used by complex attribute(s) :

Orientation Value (orientationValue) - ORIENT

Type: real
Definition: The angular distance measured from true north to the major axis of the feature.

Used by :

Used by complex attribute(s) :

Optimum Display Scale (optimumDisplayScale) - CSCALE

Type: integer
Definition: The largest intended viewing scale for the data.

Used by :

Periodic Date Range (periodicDateRange)

Type: complex
Definition: The active period of a recurring event or occurrence.

Composed of:

Used by :

Pictorial Representation (pictorialRepresentation) - PICREP

Type: text
Definition: The file name of an externally referenced picture file.

Used by :

Pilot Movement (pilotMovement)

Type: enumeration
Definition: Classification of pilot activity by arrival, departure, or change of pilot. It may also describe the place where the pilot's advice begins, ends, or is transferred to a different pilot.

LabelCodeDefinition
Embarkation1The place where vessels not being navigated according to a pilot's instructions pick up a pilot while in transit from sea to a port or constricted waters for future navigation under pilot instructions.
Disembarkation2The place where vessels being navigated under a pilot's instructions in transit from sea to a port or constricted waters drop the pilot and proceed without being subject to pilot instructions.
Pilot Change3The place where vessels being navigated under a pilot's instructions drop off the pilot and pick up a different pilot for future navigation under pilot's instructions.

Used by :

Product (product) - PRODCT

Type: enumeration
Definition: The various substances which are transported, stored or exploited.

LabelCodeDefinition
Oil1A thick, slippery liquid that will not dissolve in water, usually petroleum based in the context of storage tanks.
Gas2A substance with particles that can move freely, usually a fuel substance in the context of storage tanks.
Water3A colourless, odourless, tasteless liquid that is a compound of hydrogen and oxygen.
Stone4A general term for rock and rock fragments ranging in size from pebbles and gravel to boulders or large rock masses.
Coal5A hard black mineral that is burned as fuel.
Ore6A solid rock or mineral from which metal is obtained.
Chemicals7Any substance obtained by or used in a chemical process.
Drinking Water8Water that is suitable for human consumption.
Milk9A white fluid secreted by female mammals as food for their young.
Bauxite10A mineral from which aluminum is obtained.
Coke11A solid substance obtained after gas and tar have been extracted from coal, used as a fuel.
Iron Ingots12An oblong lump of cast iron metal.
Salt13Sodium chloride obtained from mines or by the evaporation of sea water.
Sand14Loose material consisting of small but easily distinguishable, separate grains, between 0.0625 and 2.000 millimetres in diameter.
Timber15Wood prepared for use in building or carpentry.
Sawdust/Wood Chips16Powdery fragments of wood made in sawing timber or coarse chips produced for use in manufacturing pressed board.
Scrap Metal17Discarded metal suitable for being reprocessed.
Liquefied Natural Gas18Natural gas that has been liquefied for ease of transport by cooling the gas to -162 Celsius.
Liquefied Petroleum Gas19A compressed gas consisting of flammable light hydrocarbons and derived from petroleum.
Wine20The fermented juice of grapes.
Cement21A substance made of powdered lime and clay, mixed with water.
Grain22A small hard seed, especially that of any cereal plant such as wheat, rice, corn, rye etc.
Electricity23Electric charge or current.
Ice24The solid form of water.
Clay25(Particles of less than 0.002mm); stiff, sticky earth that becomes hard when baked.

Used by :

Quality of Horizontal Measurement (qualityOfHorizontalMeasurement) - QUAPOS

Type: enumeration
Definition: The degree of reliability attributed to a position.

LabelCodeDefinition
Approximate4A position that is considered to be less than third-order accuracy, but is generally considered to be within 30.5 metres of its correct geographic location. Also may apply to a feature whose position does not remain fixed.

Used by :

Quality of Vertical Measurement (qualityOfVerticalMeasurement) - QUASOU

Type: enumeration
Definition: The reliability of the value of a sounding.

LabelCodeDefinition
Depth Known1The depth from the chart datum to the seabed (or to the top of a drying feature) is known.
Depth or Least Depth Unknown2The depth from chart datum to the seabed, or the shoalest depth of the feature is unknown.
Doubtful Sounding3A depth that may be less than indicated.
Unreliable Sounding4A depth that is considered to be an unreliable value.
Least Depth Known6The shoalest depth over a feature is of known value.
Least Depth Unknown, Safe Clearance at Value Shown7The least depth over a feature is unknown, but there is considered to be safe clearance at this depth.
Value Reported (Not Surveyed)8Depth value obtained from a report, but not fully surveyed.
Value Reported (Not Confirmed)9Depth value obtained from a report, which it has not been possible to confirm.
Maintained Depth10The depth at which a channel is kept by human influence, usually by dredging.
Not Regularly Maintained11Depths may be altered by human influence, but will not be routinely maintained.

Used by :

Radar Wave Length (radarWaveLength)

Type: complex
Definition: The distance between two successive peaks (or other points of identical phase) on an electromagnetic wave in the radar band of the electromagnetic spectrum.

Composed of:

Used by :

Rhythm of Light (rhythmOfLight)

Type: complex
Definition: The sequence of times occupied by intervals of light/sound and eclipse/silence for all light characteristics or sound signals.

Composed of:

Used by :

Reference Direction (referenceDirection)

Type: enumeration
Definition: A direction used as a basis for comparison of other directions.

LabelCodeDefinition
East5None
West13None

Used by complex attribute(s) :

Radar Band (radarBand)

Type: text
Definition: The band code character of the electromagnetic spectrum within which radar wave lengths lie.

Used by complex attribute(s) :

Radar Conspicuous (radarConspicuous) - CONRAD

Type: boolean
Definition: A feature which returns a strong radar echo.

Used by :

Radius (radius) - RADIUS

Type: real
Definition: The vector extending from the centre to the periphery of a circular or spherical feature.

Used by :

Reference Location (referenceLocation)

Type: text
Definition: Information relating to the point of origin for a measured distance as indicated on a distance mark.

Used by complex attribute(s) :

Reference Tide (referenceTide)

Type: enumeration
Definition: The reference tide to which the series of tidal stream values apply.

LabelCodeDefinition
High Water1The highest level reached at a place by the water surface in one oscillation.
Low Water2The lowest level reached at a place by the water surface in one oscillation.

Used by complex attribute(s) :

Reference Tide Type (referenceTideType)

Type: enumeration
Definition: The type of tide range (that is, mean spring tide, mean neap tide or mean tide) for which a set of tidal stream rates and directions apply.

LabelCodeDefinition
Springs1The tides of increased range occurring near the times of full moon and new moon.
Neaps2The tides of decreased range occurring near the times of first and last quarter.
Mean3The tides of mean range occurring between spring and neap tides.

Used by complex attribute(s) :

Reference Year for Magnetic Variation (referenceYearForMagneticVariation) - RYRMGV

Type: S100_TruncatedDate
Definition: The reference calendar year for magnetic variation values.

Used by :

Regulation Citation (regulationCitation)

Type: text
Definition: The regulation citation for a feature.

Used by :

Reported Date (reportedDate) - SORDAT

Type: S100_TruncatedDate
Definition: The date that the item was observed, done, or investigated.

Used by :

Restriction (restriction) - RESTRN

Type: enumeration
Definition: The official legal statute of each kind of restricted area.

LabelCodeDefinition
Anchoring Prohibited1An area within which anchoring is not permitted.
Anchoring Restricted2A specified area designated by appropriate authority, within which anchoring is restricted in accordance with certain specified conditions.
Fishing Prohibited3An area within which fishing is not permitted.
Fishing Restricted4A specified area designated by appropriate authority, within which fishing is restricted in accordance with certain specified conditions.
Trawling Prohibited5An area within which trawling is not permitted.
Trawling Restricted6A specified area designated by appropriate authority, within which trawling is restricted in accordance with certain specified conditions.
Entry Prohibited7An area within which navigation and/or anchoring is prohibited.
Entry Restricted8A specified area designated by appropriate authority, within which navigation is restricted in accordance with certain specified conditions.
Dredging Prohibited9An area within which dredging is not permitted.
Dredging Restricted10A specified area designated by appropriate authority, within which dredging is restricted in accordance with certain specified conditions.
Diving Prohibited11An area within which diving is not permitted.
Diving Restricted12A specified area designated by appropriate authority, within which diving is restricted in accordance with certain specified conditions.
No Wake13Mariners must adjust the speed of their vessels to reduce the wave or wash which may cause erosion or disturb moored vessels.
Area To Be Avoided14An IMO declared routeing measure comprising an area within defined limits in which either navigation is particularly hazardous or it is exceptionally important to avoid casualties and which should be avoided by all ships, or certain classes of ships.
Construction Prohibited15The erection of permanent or temporary fixed structures or artificial islands is prohibited.
Discharging Prohibited16An area within which discharging or dumping is prohibited.
Discharging Restricted17A specified area designated by an appropriate authority, within which discharging or dumping is restricted in accordance with specified conditions.
Industrial or Mineral Exploration/Development Prohibited18An area within which industrial or mineral exploration and development are prohibited.
Industrial or Mineral Exploration/Development Restricted19A specified area designated by an appropriate authority, within which industrial or mineral exploration and development is restricted in accordance with certain specified conditions.
Drilling Prohibited20An area within which excavating a hole on the seabed with a drill is prohibited.
Drilling Restricted21A specified area designated by an appropriate authority, within which excavating a hole on the seabed with a drill is restricted in accordance with certain specified conditions.
Removal of Historical Artefacts Prohibited22An area within which the removal of historical artefacts is prohibited.
Cargo Transhipment (Lightening) Prohibited23An area in which cargo transhipment (lightening) is prohibited.
Dragging Prohibited24An area in which the dragging of anything along the seabed, for example bottom trawling, is prohibited.
Stopping Prohibited25An area in which a vessel is prohibited from stopping.
Landing Prohibited26An area in which landing is prohibited.
Speed Restricted27An area within which speed is restricted.
Swimming Prohibited39An area in which swimming is prohibited.
Power-Driven Vessels Prohibited42An area within which any vessel propelled by machinery is prohibited.

Used by :

Schedule by Day of Week (scheduleByDayOfWeek)

Type: complex
Definition: The nature and timings of a daily schedule by days of the week.

Composed of:

Used by :

Sector Characteristics (sectorCharacteristics)

Type: complex
Definition: Describes the characteristics of a light sector.

Composed of:

Used by :

Sector Information (sectorInformation)

Type: complex
Definition: Additional textual information about a light sector.

Composed of:

Used by complex attribute(s) :

Sector Limit (sectorLimit)

Type: complex
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference. The sector limit specifies the limits of the sector In a clockwise direction around the central feature (for example a light).

Composed of:

Used by :

Used by complex attribute(s) :

Sector Limit One (sectorLimitOne) - SECTR1

Type: complex
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference. Sector limit one specifies the first limit of the sector. The order of sector limit one and sector limit two is clockwise around the central feature (for example a light).

Composed of:

Used by complex attribute(s) :

Sector Limit Two (sectorLimitTwo) - SECTR2

Type: complex
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference. Sector limit two specifies the second limit of the sector. The order of sector limit one and sector limit two is clockwise around the central feature (for example a light).

Composed of:

Used by complex attribute(s) :

Shape Information (shapeInformation)

Type: complex
Definition: Textual information about the shape of a non-standard topmark.

Composed of:

Used by :

Used by complex attribute(s) :

Signal Sequence (signalSequence) - SIGSEQ

Type: complex
Definition: The sequence of times occupied by intervals of light/sound and eclipse/silence for all “light characteristics” or sound signals.

Composed of:

Used by :

Used by complex attribute(s) :

Spatial Accuracy (spatialAccuracy)

Type: complex
Definition: Provides an indication of the vertical and horizontal positional uncertainty of bathymetric data, optionally within a specified date range.

Composed of:

Used by :

Speed (speed)

Type: complex
Definition: Rate of motion. The terms speed and velocity are often used interchangeably, but speed is a scalar, having magnitude only, while velocity is a vector quantity, having both magnitude and direction.

Composed of:

Used by :

Surface Characteristics (surfaceCharacteristics)

Type: complex
Definition: The general nature of the material of which the land surface or the seabed is composed.

Composed of:

Used by :

Survey Date Range (surveyDateRange)

Type: complex
Definition: The complex attribute describes the period of the hydrographic survey, as the time between its sub-attributes.

Composed of:

Used by :

Scale Minimum (scaleMinimum) - SCAMIN

Type: integer
Definition: The minimum scale at which the feature may be used for example for ECDIS presentation.

Used by :

Scale Value Maximum (scaleValueMaximum) - SCVAL1

Type: integer
Definition: The largest scale for the range of survey scale.

Used by :

Scale Value Minimum (scaleValueMinimum) - SCVAL2

Type: integer
Definition: The smallest scale for the range of survey scale.

Used by :

Sector Bearing (sectorBearing) - SECTR1, SECTR2

Type: real
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference. Sector bearing specifies the limit of the sector.

Used by complex attribute(s) :

Sector Arc Extension (sectorArcExtension)

Type: boolean
Definition: An indication that the default radius of a sector arc is to be extended by 5mm.

Used by complex attribute(s) :

Sector Line Length (sectorLineLength)

Type: real
Definition: A sector is the part of a circle between two straight lines drawn from the centre to the circumference. Sector line length specifies the displayed length of the line, in ground units, defining the limit of the sector.

Used by complex attribute(s) :

Signal Duration (signalDuration)

Type: real
Definition: The time occupied by a single instance of light/sound or eclipse/silence in a signal sequence.

Used by complex attribute(s) :

Signal Frequency (signalFrequency) - SIGFRQ

Type: integer
Definition: The frequency of a signal.

Used by :

Signal Generation (signalGeneration) - SIGGEN

Type: enumeration
Definition: The mechanism used to generate a fog or light signal.

LabelCodeDefinition
Automatically1Signal generation is initiated by a self regulating mechanism such as a timer or light sensor.
By Wave Action2The signal is generated by the motion of the sea surface such as a bell in a buoy.
By Hand3The signal is generated by a manually operated mechanism such as a hand cranked siren.
By Wind4The signal is generated by the motion of air such as a wind driven whistle.
Radio Activated5Activated by radio signal.
Call Activated6Activated by making a call to a manned station.

Used by :

Signal Group (signalGroup) - SIGGRP

Type: text
Definition: The number of signals, the combination of signals or the morse character(s) within one period of full sequence.

Used by :

Used by complex attribute(s) :

Signal Period (signalPeriod) - SIGPER

Type: real
Definition: The time occupied by an entire cycle of intervals of light and eclipse.

Used by :

Used by complex attribute(s) :

Signal Status (signalStatus)

Type: enumeration
Definition: The indication of an element of a signal sequence being a period of light/sound or eclipse/silence.

LabelCodeDefinition
Lit/Sound1The indication of an element of a signal sequence being a period of light or sound.
Eclipsed/Silent2The indication of an element of a signal sequence being a period of eclipse or silence.

Used by complex attribute(s) :

Significant Features Detected (significantFeaturesDetected)

Type: boolean
Definition: A statement expressing if significant features have or have not been detected in the course of a survey.

Used by complex attribute(s) :

Size of Features Detected (sizeOfFeaturesDetected)

Type: real
Definition: The size of detected bathymetric features in an area.

Used by complex attribute(s) :

Source (source)

Type: text
Definition: The publication, document, or reference work from which information comes or is acquired.

Used by :

Speed Limit (speedLimit)

Type: real
Definition: The maximum allowed rate of travel in an area.

Used by complex attribute(s) :

Speed Maximum (speedMaximum) - CURVEL

Type: real
Definition: Rate of motion. The terms speed and velocity are often used interchangeably, but speed is a scalar, having magnitude only, while velocity is a vector quantity, having both magnitude and direction. Speed maximum is the maximum rate of travel that can occur.

Used by complex attribute(s) :

Speed Minimum (speedMinimum)

Type: real
Definition: Rate of motion. The terms speed and velocity are often used interchangeably, but speed is a scalar, having magnitude only, while velocity is a vector quantity, having both magnitude and direction. Speed minimum is the minimum rate of travel that can occur.

Used by complex attribute(s) :

Speed Units (speedUnits)

Type: enumeration
Definition: The units for description of speed.

LabelCodeDefinition
Kilometres Per Hour2A unit of speed, expressing the number of kilometres travelled in one hour.
Miles Per Hour3An imperial and United States customary unit of speed expressing the number of statute miles covered in one hour.
Knots4A nautical unit of speed. One knot is one nautical mile per hour. The name is derived from the knots in the log line.

Used by complex attribute(s) :

Station Name (stationName)

Type: text
Definition: The name of the reference tide station with reference water level for tidal stream panel observations.

Used by :

Station Number (stationNumber)

Type: text
Definition: The identification number of the reference tide station with reference water level for tidal stream panel observations.

Used by :

Status (status) - STATUS

Type: enumeration
Definition: The condition of an object at a given instant in time.

LabelCodeDefinition
Permanent1Intended to last or function indefinitely.
Occasional2Acting on special occasions; happening irregularly.
Recommended3Presented as worthy of confidence, acceptance, use, etc.
Not in Use4Use has ceased, but the facility still exists intact; disused.
Periodic/Intermittent5Recurring at intervals.
Reserved6Set apart for some specific use.
Temporary7Meant to last only for a time.
Private8Administered by an individual or corporation, rather than a State or a public body.
Mandatory9Compulsory; enforced.
Extinguished11No longer lit.
Illuminated12Lit by flood lights, strip lights, etc.
Historic13Famous in history; of historical interest.
Public14Belonging to, available to, used or shared by, the community as a whole and not restricted to private use.
Synchronized15Occur at a time, coincide in point of time, be contemporary or simultaneous.
Watched16Looked at or observed over a period of time especially so as to be aware of any movement or change.
Unwatched17Usually automatic in operation, without any permanently-stationed personnel to superintend it.
Existence Doubtful18A feature that has been reported but has not been definitely determined to exist.
Buoyed28Marked by buoys.

Used by :

Stream Depth (streamDepth)

Type: real
Definition: The depth below the sea surface to which the tidal stream data refers relative to the sounding datum.

Used by complex attribute(s) :

Surrounding Depth (surroundingDepth)

Type: real
Definition: The depth value determined for seabed around an underwater hazard, based on the depth of the surrounding area.

Used by :

Survey Authority (surveyAuthority) - SURATH

Type: text
Definition: The authority which was responsible for the survey.

Used by :

Survey Type (surveyType) - SURTYP

Type: enumeration
Definition: Classification of the different survey types.

LabelCodeDefinition
Reconnaissance/Sketch Survey1A survey made (due to lack of time or facilities) to a lower degree of accuracy and detail than the chosen scale would normally indicate.
Controlled Survey2A thorough survey usually conducted with reference to guidelines.
Examination Survey4A survey principally aimed at the investigation of underwater obstructions and dangers.
Passage Survey5A survey where soundings are acquired by vessels on passage.
Remotely Sensed6A survey where features have been positioned and delimited using remote sensing techniques.
Full Coverage7A survey achieving 100% coverage using systematic, controlled techniques providing full seafloor coverage or full coverage to a defined depth and an investigation of all contacts.
Systematic Survey8A controlled survey but full coverage may not have been achieved.
Non-Systematic Survey9A survey of lower quality than a full coverage and systematic survey. Such surveys may be further categorized as reconnaissance, sketch, track, passage, remotely sensed and spot-sounding surveys.
Inadequately Surveyed10Not surveyed to modern standards; or due to its age, scale, or positional or vertical uncertainties is not suitable to the type of navigation expected in the area.
Spot-Sounding Survey11A survey that uses a regular (for example grid) or irregular pattern of soundings obtained one at a time, and normally with very wide spacing.
Acoustically Swept Survey12A controlled, systematic survey to standard accuracy; using modern survey echo sounder with sonar sweep.
Mechanically Swept Survey13Swept areas where the clearance depth is accurately known but the actual seabed depth is not accurately known.

Used by :

Swept Date (sweptDate)

Type: S100_TruncatedDate
Definition: The date that the area was swept by a survey.

Used by :

Telecommunications (telecommunications)

Type: complex
Definition: A means or channel of communicating at a distance by electrical or electromagnetic means such as telegraphy, telephony, or broadcasting.

Composed of:

Used by :

Tidal Stream Panel Values (tidalStreamPanelValues)

Type: complex
Definition: The direction of the flow and the tidal current rate from 6 hours before to 6 hours after high water (HW) or low water (LW) at the reference tide station, at hourly or sub-hourly intervals.

Composed of:

Used by :

Tidal Stream Value (tidalStreamValue)

Type: complex
Definition: A measurement of the direction and speed of a tidal stream at a given time relative to the reference tide.

Composed of:

Used by complex attribute(s) :

Time Intervals by Day of Week (timeIntervalsByDayOfWeek)

Type: complex
Definition: The regular weekly operation times of a service or schedule.

Composed of:

Used by complex attribute(s) :

Topmark (topmark) - TOPMAR

Type: complex
Definition: A characteristic shape secured at the top of a buoy or beacon to aid in its identification.

Composed of:

Used by :

Technique of Vertical Measurement (techniqueOfVerticalMeasurement) - TECSOU

Type: enumeration
Definition: Survey method used to obtain depth information.

LabelCodeDefinition
Found by Echo Sounder1The depth was measured by using an instrument that determines depth of water by measuring the time interval between emission of a sonic or ultrasonic signal and return of its echo from the bottom.
Found by Side Scan Sonar2The depth was computed from a record produced by active sonar in which fixed acoustic beams are directed into the water perpendicularly to the direction of travel to scan the seabed and generate a record of the seabed configuration.
Found by Multi Beam3The depth was measured by using a wide swath echo sounder that uses multiple beams to measure depths directly below and transverse to the ship's track.
Found by Diver4The depth was determined by a person skilled in the practice of diving.
Found by Lead Line5The depth was measured by using a line, graduated with attached marks and fastened to a sounding lead.
Swept by Vertical Acoustic System8The given area has been swept using a system comprised of multiple echo sounder transducers attached to booms deployed from the survey vessel.
Found by Electromagnetic Sensor9The depth was determined by using an instrument that compares electromagnetic signals.
Photogrammetry10The science or art of obtaining reliable measurements from photographs.
Satellite Imagery11The depth was determined by using instruments placed aboard an artificial satellite.
Found by Levelling12The depth was determined by using levelling techniques to find the elevation of the point relative to a datum.
Swept by Side Scan Sonar13The given area was determined to be free from navigational dangers to a certain depth by towing a side scan sonar.
Found by LIDAR15The depth was measured by using an instrument that measures distance by emitting timed pulses of laser light and measuring the time between emission and reception of the reflected pulses.
Synthetic Aperture Radar16A radar with a synthetic aperture antenna which is composed of a large number of elementary transducing elements. The signals are electronically combined into a resulting signal equivalent to that of a single antenna of a given aperture in a given direction.
Hyperspectral Imagery17Term used to describe the imagery derived from subdividing the electromagnetic spectrum into very narrow bandwidths. These narrow bandwidths may be combined with or subtracted from each other in various ways to form images useful in precise terrain or target analysis.
Mechanically Swept18The given area was determined to be free from navigational dangers to a certain depth by towing a line or object below the surface at the desired depth; or least depth(s) and position(s) within an area was identified using the same technique.

Used by :

Telecommunication Identifier (telecommunicationIdentifier)

Type: text
Definition: An identifier, such as words, numbers, letters, symbols, or any combination of those used to establish a contact to a particular person, organisation or service.

Used by complex attribute(s) :

Telecommunication Service (telecommunicationService)

Type: enumeration
Definition: Classification of methods of communication over a distance by electrical, electronic, or electromagnetic means.

LabelCodeDefinition
Voice1The transfer or exchange of information by using sounds that are being made by mouth and throat when speaking.
Facsimile2A system of transmitting and reproducing graphic matter (as printing or still pictures) by means of signals sent over telephone lines.
SMS3Short Message Service is a form of text messaging communication on phones and mobile phones.
Data4A representation of facts, concepts or instructions in a formalised manner suitable for communication, interpretation or processing.
Streamed Data5Data that is constantly received by and presented to an end-user while being delivered by a provider.
Telex6A system of communication in which messages are sent over long distances by using a telephone system and are printed by using a special machine (called a teletypewriter).
Telegraph7An apparatus, system or process for communication at a distance by electric transmission over wire.
Email8Messages and other data exchanged between individuals using computers in a network.

Used by complex attribute(s) :

Text (text) - INFORM, NINFOM

Type: text
Definition: A non-formatted digital text string.

Used by complex attribute(s) :

Text Offset Bearing (textOffsetBearing)

Type: integer
Definition: The angular distance measured from true north that text associated with a feature is positioned from the feature in an end-user system.

Used by :

Text Offset Distance (textOffsetDistance)

Type: integer
Definition: The distance that text associated with a feature is positioned from the feature in an end-user system.

Used by :

Text Rotation (textRotation)

Type: boolean
Definition: A statement that expresses if text associated with a feature is to be rotated in the ECDIS display or not.

Used by :

Text Type (textType)

Type: enumeration
Definition: The attribute from which a text string is derived.

LabelCodeDefinition
Name1The individual name of a feature.
Feature Characteristic2A distinguishing trait, quality, or property of a feature class.

Used by :

Time of Day End (timeOfDayEnd)

Type: time
Definition: The time corresponding to the end of an active period.

Used by complex attribute(s) :

Time of Day Start (timeOfDayStart)

Type: time
Definition: The time corresponding to the start of an active period.

Used by complex attribute(s) :

Time Relative to Tide (timeRelativeToTide)

Type: real
Definition: The time difference relative to the reference tide.

Used by complex attribute(s) :

Topmark/Daymark Shape (topmarkDaymarkShape) - TOPSHP

Type: enumeration
Definition: The shape a topmark or daymark exhibits.

LabelCodeDefinition
Cone (Point Up)1Is where the vertex points up.
Cone (Point Down)2Is where the vertex points down.
Sphere3A curved surface all points of which are equidistant from a fixed point within, called the centre.
2 Spheres4Two spheres, one above the other. Two black spheres are commonly used as an International Association of Lighthouse Authorities - IALA topmark (isolated danger).
Cylinder5A solid geometrical figure generated by straight lines fixed in direction and describing with one of point a closed curve, especially a circle (in which case the figure is circular cylinder, its ends being parallel circles).
Board6Usually of rectangular shape, made from timber or metal and used to provide a contrast with the natural background of a daymark. The actual daymark is often painted on to this board.
X-Shaped7Having a shape or a cross-section like the capital letter X.
Upright Cross8A cross with one vertical member and one horizontal member; that is, similar in shape to the character '+'.
Cube (Point Up)9A cube standing on one of its vertexes. A cube is a solid contained by six equal squares, a regular hexahedron.
2 Cones (Point to Point)102 cones, one above the other, with their vertices together in the centre.
2 Cones (Base to Base)112 cones, one above the other, with their bases together in the centre and their vertices pointing up and down.
Rhombus12A plane figure having four equal sides and equal opposite angles (two acute and two obtuse); an oblique equilateral parallelogram.
2 Cones (Points Upward)132 cones, one above the other, with their vertices pointing up.
2 Cones (Points Downward)142 cones, one above the other, with their vertices pointing down.
Besom (Point Up)15A bundle of rods or twigs. A besom, point up is where the thicker (untied) end of the besom is at the bottom.
Besom (Point Down)16A bundle of rods or twigs. A besom, point down is where the thinner (tied) end of the besom is at the bottom.
Flag17A flag mounted on a short pole.
Sphere Over a Rhombus18A sphere located above a rhombus.
Square19A plane figure with four right angles and four equal straight sides.
Rectangle (Horizontal)20A horizontal rectangle is where the two longer opposite sides are standing horizontally.
Rectangle (Vertical)21A vertical rectangle is where the two longer opposite sides are standing vertically.
Trapezium (Up)22A quadrilateral having one pair of opposite sides parallel, and which stands on its longer parallel side.
Trapezium (Down)23A quadrilateral having one pair of opposite sides parallel, and which stands on its shorter parallel side.
Triangle (Point Up)24A figure having three angles and three sides, and which has a vertex at the top.
Triangle (Point Down)25A figure having three angles and three sides, and which has a side at the top.
Circle26A perfectly round plane figure whose circumference is everywhere equidistant from its centre.
Two Upright Crosses (One Over the Other)27Two upright crosses, generally vertically disposed one above the other.
T-Shape28Having a shape like the capital letter T.
Triangle Pointing Up Over a Circle29A triangle, vertex uppermost, located above a circle.
Upright Cross Over a Circle30An upright cross located above a circle.
Rhombus Over a Circle31A rhombus located above a circle.
Circle Over a Triangle Pointing Up32A circle located over a triangle, vertex uppermost.
Other Shape (See Shape Information)33An uncommon and/or non-standardized shape as textually described using an associated attribute.

Used by :

Used by complex attribute(s) :

Traffic Flow (trafficFlow) - TRAFIC

Type: enumeration
Definition: Direction of vessels passing a reference point.

LabelCodeDefinition
Inbound1Traffic flow in a general direction toward a port or similar destination.
Outbound2Traffic flow in a general direction away from a port or similar point of origin.
One-Way3Traffic flow in one general direction only.
Two-Way4Traffic flow in two generally opposite directions.

Used by :

Update Number (updateNumber)

Type: integer
Definition: Update number of the ENC being referenced.

Used by :

Update Type (updateType)

Type: enumeration
Definition: An action performed when the contents of a dataset are changed.

LabelCodeDefinition
Insert1To put or introduce into the body of something.
Delete2To eliminate especially by removing, cutting out or erasing.
Modify3To make basic or fundamental changes to the characteristics of something, often to give a new orientation to or to serve a new end.
Move4To change the place or position of something.

Used by :

Uncertainty Fixed (uncertaintyFixed)

Type: real
Definition: The best estimate of the fixed horizontal or vertical accuracy component for positions, depths, heights, vertical distances and vertical clearances.

Used by complex attribute(s) :

Uncertainty Variable Factor (uncertaintyVariableFactor)

Type: real
Definition: The factor to be applied to the variable component of an uncertainty equation so as to provide the best estimate of the variable horizontal or vertical accuracy component for positions, depths, heights, vertical distances and vertical clearances.

Used by complex attribute(s) :

Underlying Layer (underlyingLayer)

Type: integer
Definition: The position of the seabed type within the layers of the seabed.

Used by complex attribute(s) :

Value of Local Magnetic Anomaly (valueOfLocalMagneticAnomaly)

Type: complex
Definition: The value of the deviation from the normal magnetic variation and where required its direction.

Composed of:

Used by :

Vertical Clearance Closed (verticalClearanceClosed) - VERCCL

Type: complex
Definition: The vertical clearance of a feature in closed condition (for example a closed lifting bridge) measured from the horizontal plane towards the feature overhead.

Composed of:

Used by :

Vertical Clearance Fixed (verticalClearanceFixed) - VERCLR

Type: complex
Definition: The vertical clearance measured from the horizontal plane towards a fixed (non-opening) feature overhead.

Composed of:

Used by :

Vertical Clearance Open (verticalClearanceOpen) - VERCOP

Type: complex
Definition: The vertical clearance of a feature in opened condition (for example an open lifting bridge) measured from the horizontal plane towards the feature overhead.

Composed of:

Used by :

Vertical Clearance Safe (verticalClearanceSafe) - VERCSA

Type: complex
Definition: The safe vertical clearance of a feature measured from the horizontal plane towards the feature overhead.

Composed of:

Used by :

Vertical Uncertainty (verticalUncertainty) - SOUACC, VERACC

Type: complex
Definition: The best estimate of the vertical accuracy of depths, heights, vertical distances and vertical clearances.

Composed of:

Used by :

Used by complex attribute(s) :

Vessel Speed Limit (vesselSpeedLimit)

Type: complex
Definition: The maximum allowed rate of travel for a vessel in an area in knots.

Composed of:

Used by :

Value of Annual Change in Magnetic Variation (valueOfAnnualChangeInMagneticVariation) - VALACM

Type: real
Definition: The annual change in magnetic variation values.

Used by :

Value of Depth Contour (valueOfDepthContour) - VALDCO

Type: real
Definition: The depth of a sea bottom contour.

Used by :

Value of Magnetic Variation (valueOfMagneticVariation) - VALMAG

Type: real
Definition: The angle between the magnetic and geographical meridians at any place, expressed in degrees east or west to indicate the direction of magnetic north from true north.

Used by :

Value of Maximum Range (valueOfMaximumRange) - VALMXR

Type: real
Definition: The extreme distance at which a feature can be seen or a signal detected.

Used by :

Value of Nominal Range (valueOfNominalRange) - VALNMR

Type: real
Definition: The luminous range of a light in a homogenous atmosphere in which the meteorological visibility is 10 sea miles.

Used by :

Used by complex attribute(s) :

Value of Sounding (valueOfSounding) - VALSOU

Type: real
Definition: The value of the measurement of a sounding relative to the chart datum.

Used by :

Vertical Clearance Unlimited (verticalClearanceUnlimited)

Type: boolean
Definition: A statement that expresses if the vertical clearance for a feature in the open position, such as a bridge span, is unlimited.

Used by complex attribute(s) :

Vertical Clearance Value (verticalClearanceValue) - VERCLR, VERCCL, VERCOP, VERCSA

Type: real
Definition: The vertical clearance measured from the horizontal plane towards the feature overhead.

Used by complex attribute(s) :

Vertical Datum (verticalDatum) - VERDAT, Datum Level, Reference Plane, Levelling Datum, Datum for Sounding Reduction, Datum for Heights

Type: enumeration
Definition: The reference level used for expressing the vertical measurements of points on the earth's surface. Also called datum level, reference plane, levelling datum, datum for sounding reduction, datum for heights.

LabelCodeDefinition
Mean Low Water Springs1The average height of the low waters of spring tides. This level is used as a tidal datum in some areas.
Mean Lower Low Water Springs2The average height of lower low water springs at a place.
Mean Sea Level3The average height of the surface of the sea at a tide station for all stages of the tide over a 19-year period, usually determined from hourly height readings measured from a fixed predetermined reference level.
Lowest Low Water4An arbitrary level conforming to the lowest tide observed at a place, or somewhat lower.
Mean Low Water5The average height of all low waters at a place over a 19-year period.
Lowest Low Water Springs6An arbitrary level conforming to the lowest water level observed at a place at spring tides during a period of time shorter than 19 years.
Approximate Mean Low Water Springs7An arbitrary level, usually within 0.3m from that of Mean Low Water Springs (MLWS).
Indian Spring Low Water8An arbitrary tidal datum approximating the level of the mean of the lower low water at spring tides. It was first used in waters surrounding India.
Low Water Springs9An arbitrary level, approximating that of mean low water springs (MLWS).
Approximate Lowest Astronomical Tide10An arbitrary level, usually within 0.3m from that of Lowest Astronomical Tide (LAT).
Nearly Lowest Low Water11An arbitrary level approximating the lowest water level observed at a place, usually equivalent to the Indian Spring Low Water (ISLW).
Mean Lower Low Water12The average height of the lower low waters at a place over a 19-year period.
Low Water13The lowest level reached at a place by the water surface in one oscillation.
Approximate Mean Low Water14An arbitrary level, usually within 0.3m from that of Mean Low Water (MLW).
Approximate Mean Lower Low Water15An arbitrary level, usually within 0.3m from that of Mean Lower Low Water (MLLW).
Mean High Water16The average height of all high waters at a place over a 19-year period.
Mean High Water Springs17The average height of the high waters of spring tides.
High Water18The highest level reached at a place by the water surface in one oscillation.
Approximate Mean Sea Level19An arbitrary level, usually within 0.3m from that of Mean Sea Level (MSL).
High Water Springs20An arbitrary level, approximating that of mean high water springs (MHWS).
Mean Higher High Water21The average height of higher high waters at a place over a 19-year period.
Equinoctial Spring Low Water22The level of low water springs near the time of an equinox.
Lowest Astronomical Tide23The lowest tide level which can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.
Local Datum24An arbitrary datum defined by a local harbour authority, from which levels and tidal heights are measured by this authority.
International Great Lakes Datum 198525A vertical reference system with its zero based on the mean water level at Rimouski/Pointe-au-Père, Quebec, over the period 1970 to 1988.
Mean Water Level26The average of all hourly water levels over the available period of record.
Lower Low Water Large Tide27The average of the lowest low waters, one from each of 19 years of observations.
Higher High Water Large Tide28The average of the highest high waters, one from each of 19 years of observations.
Nearly Highest High Water29An arbitrary level approximating the highest water level observed at a place, usually equivalent to the high water springs.
Highest Astronomical Tide30The highest tidal level which can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.
Baltic Sea Chart Datum 200044The datum refers to each Baltic country's realization of the European Vertical Reference System (EVRS) with land-uplift epoch 2000, which is connected to the Normaal Amsterdams Peil (NAP).

Used by :

Vertical Length (verticalLength) - VERLEN

Type: real
Definition: The total vertical length of a feature.

Used by :

Vessel Class (vesselClass)

Type: text
Definition: The classification of a vessel, normally as defined by length or gross tonnage.

Used by complex attribute(s) :

Virtual AIS Aid to Navigation Type (virtualAISAidToNavigationType)

Type: enumeration
Definition: A purpose of a virtual AIS Aid to Navigation.

LabelCodeDefinition
North Cardinal1Indicates that it should be passed to the north side of the aid.
East Cardinal2Indicates that it should be passed to the east side of the aid.
South Cardinal3Indicates that it should be passed to the south side of the aid.
West Cardinal4Indicates that it should be passed to the west side of the aid.
Port Lateral (IALA A)5Indicates the port boundary of a navigational channel or suggested route when proceeding in the “conventional direction of buoyage” in the IALA A system.
Starboard Lateral (IALA A)6Indicates the starboard boundary of a navigational channel or suggested route when proceeding in the “conventional direction of buoyage” in the IALA A system.
Port Lateral (IALA B)7Indicates the port boundary of a navigational channel or suggested route when proceeding in the “conventional direction of buoyage” in the IALA B system.
Starboard Lateral (IALA B)8Indicates the starboard boundary of a navigational channel or suggested route when proceeding in the “conventional direction of buoyage” in the IALA B system.
Isolated Danger9A mark used alone to indicate a dangerous reef or shoal. The mark may be passed on either hand.
Safe Water10Indicates that there is navigable water around the mark.
Special Purpose11A special purpose aid is primarily used to indicate an area or feature, the nature of which is apparent from reference to a chart, Sailing Directions or Notice to Mariners.
Emergency Wreck Marking12A mark used to indicate the existence of a recent wreck.

Used by :

Visitors Mooring (visitorsMooring)

Type: boolean
Definition: A mooring set aside for the use of visiting vessels.

Used by :

Visual Prominence (visualProminence) - CONVIS

Type: enumeration
Definition: The extent to which a feature, either natural or artificial, is visible from seaward.

LabelCodeDefinition
Visually Conspicuous1Term applied to an object either natural or artificial which is distinctly and notably visible from seaward.
Not Visually Conspicuous2An object that may be visible from seaward, but cannot be used as a fixing mark and is not conspicuous.
Prominent3Objects which are easily identifiable, but do not justify being classed as conspicuous.

Used by :

Water Level Effect (waterLevelEffect) - WATLEV

Type: enumeration
Definition: The effect of the surrounding water on an object.

LabelCodeDefinition
Partly Submerged at High Water1Partially covered and partially dry at high water.
Always Dry2Not covered at high water under average meteorological conditions.
Always Under Water/Submerged3Remains covered by water at all times under average meteorological conditions.
Covers and Uncovers4Expression intended to indicate an area of a reef or other projection from the bottom of a body of water which periodically extends above and is submerged below the surface. Also referred to as dries or uncovers.
Awash5Flush with, or washed by the waves at low water under average meteorological conditions.
Subject to Inundation or Flooding6An area periodically covered by flood water, excluding tidal waters.
Floating7Resting or moving on the surface of a liquid without sinking.

Used by :

Waterway Distance (waterwayDistance)

Type: real
Definition: The length of the space between two points along a waterway.

Used by complex attribute(s) :

Wave Length Value (waveLengthValue) - Radar Wave Length

Type: real
Definition: The distance between two successive peaks (or other points of identical phase) on an electromagnetic wave.

Used by complex attribute(s) :

Zone of Confidence (zoneOfConfidence)

Type: complex
Definition: The overall indication of the quality of bathymetric data within an area based on the positional accuracy, survey equipment and coverage; optionally within a specified data range.

Composed of:

Used by :

Roles

The Auxiliary Feature (theAuxiliaryFeature)

Definition: A pointer to incidental, secondary or supplementary features related to the referenced feature.

The Cartographic Text (theCartographicText)

Definition: A pointer to a specific cartographically positioned location for text.

The Collection (theCollection)

Definition: A pointer to the aggregate in a whole-part relationship.

The Component (theComponent)

Definition: A pointer to a part in a whole-part relationship.

The Equipment (theEquipment)

Definition: A pointer to the feature(s) supported by a structure feature.

The Information (theInformation)

Definition: A pointer to an object that provides more information about the referencing feature or information type.

The Position Provider (thePositionProvider)

Definition: A pointer to a specific feature(s).

The Primary Feature (thePrimaryFeature)

Definition: A pointer to a feature to which incidental, secondary or supplementary features are related.

The Quality Information (theQualityInformation)

Definition: A pointer to an information type providing spatial quality information.

The Roofed Structure (theRoofedStructure)

Definition: A pointer to a supported roofed structure.

The Structure (theStructure)

Definition: A pointer to the feature that equipment feature(s) are supported by.

The Support (theSupport)

Definition: A pointer to the feature(s) that support a structure.

The Update (theUpdate)

Definition: A pointer to a feature that describes changes made to a dataset.

The Updated Object (theUpdatedObject)

Definition: A pointer to a feature that has been updated.