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Bathymetric datasets

Bathymetric datasets are an extraction of surveys belonging to the Shom public database. For depth up to 50m, the vertical precision of soundings varies from 30cm to 1m and the horizontal precision varies from 1 to 20m. In deep ocean, the vertical precision is mainly around 1 or 2% of the bottom depth. It is sometimes more, it depends on the technology used. The data are referenced to ZH which is assimilated to LAT. Data are corrected for sound velocity variations.

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October 27 2025 version

 
Citation proposal
. Bathymetric datasets. https://services.data.shom.fr:/geonetwork/cache/api/records/LEVES_BATHY.xml

Simple

Date ( Creation )
2023-08-08
Date ( Revision )
2025-10-27
Identifier

http://www.shom.fr/BATHYMETRIE/LEVES_BATHY

Presentation form
Digital map
Credit

©Shom

  Owner

Shom  

13 rue du Chatellier

BREST

29200

France


Maintenance and update frequency
Irregular
Keywords ( Theme )
  • bathymetry

  • open data

  • Product

Use limitation

Data may be freely used providing that the source is mentioned as follows "Shom, 2026. https://dx.doi.org/10.17183/LEVES_BATHY ". Open licence Etalab v. 2.0 avril 2017.

Use limitation

Do not use for navigation.

Use limitation

Data may be freely used providing that the source is mentioned as follows "Shom, 2026. https://dx.doi.org/10.17183/LEVES_BATHY ". Open licence Etalab v. 2.0 avril 2017.

Use limitation

Do not use for navigation.

Access constraints
License
Use constraints
Other restrictions
Other constraints
Licence Ouverte version 2.0 Open Licence version 2.0
Access constraints
Other restrictions
Other constraints
Pas de restriction d'accès public. No public access restrictions.
Classification
Unclassified
Spatial representation type
Vector
Metadata language
fre French
Character set
utf8 UTF8
Topic category
  • Elevation
N
S
E
W


Begin date
1816-01-01T00:00:00
End date
2025-07-03T00:00:00
Distribution format
  • XYZ ASCII

    (

    1.0

    )

  Distributor

Shom  

OnLine resource
Shom Geoportal  

Shom Geoportal

OnLine resource
Shom marketplace  

Shom marketplace

OnLine resource
Download service - Bathymetric datasets before 1970  

Access point / Download service

OnLine resource
Download service - Bathymetric datasets between 1970 and 1990  

Access point / Download service

OnLine resource
Download service - Bathymetric datasets between 1990 and 2005  

Access point / Download service

OnLine resource
Download service - Bathymetric datasets after 2005  

Access point / Download service

OnLine resource
LEVES_BATHY_AVANT_1970_WMSV  

Access point / WMS Bathymetric datasets before 1970

OnLine resource
LEVES_BATHY_1970-1990_WMSV  

Access point / WMS Bathymetric datasets between 1970 and 1990

OnLine resource
LEVES_BATHY_1990-2005_WMSV  

Access point / WMS Bathymetric datasets between 1990 and 2005

OnLine resource
LEVES_BATHY_APRES_2005_WMSV  

Access point / WMS Bathymetric datasets after 2005

OnLine resource
LEVES_BATHY_AVANT_1970_WFS:leves_bathy_avant_1970  

Access point / WFS Bathymetric datasets before 1970

OnLine resource
LEVES_BATHY_1970-1990_WFS:leves_bathy_1970_1990  

Access point / WFS Bathymetric datasets between 1970 and 1990

OnLine resource
LEVES_BATHY_1990-2005_WFS:leves_bathy_1990_2005  

Access point / WFS Bathymetric datasets between 1990 and 2005

OnLine resource
LEVES_BATHY_APRES_2005_WFS:leves_bathy_apres_2005  

Access point / WFS Bathymetric datasets after 2005

Hierarchy level
Series

Conformance result

Date ( Publication )
2010-11-23
Explanation

Information sur la conformité au règlement d'interopérabilité des séries et des services de données géographiques.

Pass
true
Statement

Bathymetric datasets are an extraction of surveys belonging to the Shom public database. They go through a quality control before integration. Quality controls and qualification, conducted by the Shom, on these datasets are not exhaustive. Datasets may present significant uncertainties and errors may remain. From 1968, datasets are in compliance with the S-44 Standards of the International Hydrographic Organization which were in effect at the time of survey. In the Shom public database, dense datasets are decimated (typically 1m for shallow waters and 100m for deep waters).

Metadata

File identifier
LEVES_BATHY.xml   XML
Metadata language
fre French
Character set
utf8 UTF8
Hierarchy level
Series
Hierarchy level name

Collection de données

Date stamp
2026-03-24T12:34:30
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

  Point of contact

Shom  

13 rue du Chatellier

BREST

29200

France


 
 

  Overviews

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Provided by

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


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