S196100700_LEVE_BATHY English utf8 LEVES_BATHY_AVANT_1970.xml dataset Jeu de données Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France data-support@shom.fr https://www.shom.fr/ 2023-12-14T23:44:05 ISO 19115:2003/19139 1.0 utf8 surface 2 point false WGS 84 (EPSG:4326) Bathymetric dataset S196100700 Levé bathymétrique S196100700 S196100700 2023-09-05 revision http://www.shom.fr/BATHYMETRIE/LEVES_BATHY_AVANT_1970/S196100700 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://www.shom.fr/ originator 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. Data are acquired during the campaign S196100700 (http://dx.doi.org/10.17183/S196100700). // Instruments: Sondeur KELVIN-HUGHES // Number of soundings: 17641 Les levés bathymétriques sont des semis de sondes issus de levés provenant de la base des données diffusables par le Shom. Pour les fonds jusqu à 50m, la précision verticale des sondes varie de 30cm à 1m et la précision planimétrique de 1 à 20m. Au-delà, dans les grands fonds, la précision verticale est majoritairement de l ordre de 1 à 2% de la profondeur du fond. Parfois, elle est plus élevée selon la technologie utilisée. Les données sont référencées au ZH qui est assimilé à la Plus Basse Mer Astronomique (PBMA). Les données sont corrigées des variations de la célérité du son dans l eau. Les données proviennent de la campagne S196100700 (http://dx.doi.org/10.17183/S196100700). // Instruments: Sondeur KELVIN-HUGHES // Nombre de sondes: 17641 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://www.shom.fr/ custodian asNeeded https://services.data.shom.fr/static/imagettes/LEVES_BATHY_AVANT_1970_PACK_DL/S196100700.png thumbnail png Bathymetry and Elevation Bathymétrie et altitude parameter SeaDataNet Parameter Discovery Vocabulary P02 2022-05-04 revision 120 http://www.seadatanet.org/urnurl/SDN:P02 single-beam echosounders echo-sonder instrument SeaDataNet device categories L05 2021-06-15 revision 81 http://www.seadatanet.org/urnurl/SDN:L05 research vessel navire océanographique platform_class SeaVoX Platform Categories L06 2021-03-25 revision 17 http://www.seadatanet.org/urnurl/SDN:L06 Bathymetric Dataset are available under Open License (version 2.0 - April 2017), Etalab mission Les levés bathymétriques sont diffusés sous Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab Quote the source as follows: "Shom, bathymetric dataset. DOI: http://dx.doi.org/10.17183/S196100700" Citer la source de la manière suivante: "Shom, levé bathymétrique. DOI: http://dx.doi.org/10.17183/S202001900" Product not certified for navigation Ne pas utiliser pour la navigation Open License (version 2.0 - April 2017), Etalab mission Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab Open License (version 2.0 - April 2017), Etalab mission Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab No public access restrictions. Pas de restriction d'accès public. English utf8 oceans -2.34225 -1.59055 46.1815833 46.7025 -1.8666456130576035 46.494206723690546 -1.8637937 46.4931063 -1.8610437 46.4929563 -1.854573 46.4925063 -1.8510604 46.4925063 -1.8510604 46.4889937 -1.8550437 46.485677 -1.850973 46.480373 -1.8474604 46.480373 -1.843477 46.4796063 -1.838827 46.477273 -1.8356396 46.478323 -1.832127 46.478323 -1.825627 46.4762396 -1.8205437 46.4707396 -1.818623 46.4717063 -1.8151104 46.4717063 -1.8151104 46.4681937 -1.8172105021667855 46.4656208293792 -1.8145564 46.4647731 -1.8127898 46.4680231 -1.8091436 46.4680231 -1.8051602 46.4624398 -1.7994064 46.4617398 -1.7957602 46.4617398 -1.7942436 46.4610398 -1.7927102 46.4595231 -1.7926769 46.4575564 -1.7867936 46.4532398 -1.7825898 46.4544064 -1.7789436 46.4544064 -1.7779602 46.4513564 -1.7771602 46.4490731 -1.7712102 46.4461064 -1.7645269 46.4435064 -1.7610769 46.4417064 -1.7567769 46.4404231 -1.7551602 46.4377731 -1.7502769 46.4353564 -1.7457769 46.4342564 -1.7421564 46.4355564 -1.7385102 46.4355564 -1.7376436 46.4342064 -1.7366102 46.4326398 -1.7356769 46.4312564 -1.7294769 46.4294064 -1.7257064 46.4268564 -1.7220602 46.4268564 -1.7207602 46.4255064 -1.7145436 46.4225564 -1.7118602 46.4224731 -1.7074731 46.4203064 -1.7038269 46.4203064 -1.7022769 46.4191231 -1.7006102 46.4177898 -1.6988102 46.4163731 -1.6945398 46.4147398 -1.6908936 46.4147398 -1.6894269 46.4136398 -1.6858602 46.4109564 -1.6823102 46.4082564 -1.6794102 46.4059231 -1.6762707022072265 46.40335167190784 -1.6756141 46.4034974 -1.6724641 46.4038141 -1.6680359 46.4038141 -1.6663474 46.4016974 -1.6625474 46.4022474 -1.6588641 46.4027474 -1.6545474 46.4033808 -1.6508974 46.4039808 -1.6464692 46.4039808 -1.6444026 46.4029974 -1.6439859 46.3988641 -1.6415526 46.3952641 -1.6384192 46.3946641 -1.6372192 46.3941141 -1.6346026 46.3903474 -1.6316974 46.3877641 -1.6272692 46.3877641 -1.6257974 46.3860308 -1.6213692 46.3860308 -1.6176026 46.3832474 -1.6132308 46.3815474 -1.6117474 46.3838141 -1.6098141 46.3855141 -1.6085974 46.3872641 -1.6074141 46.3890808 -1.6060641 46.3911474 -1.6047641 46.3931474 -1.6003359 46.3931474 -1.6003359 46.3887192 -1.6016359 46.3867192 -1.6029859 46.3846526 -1.6041692 46.3828359 -1.6053859 46.3810859 -1.6057192 46.3798808 -1.6063192 46.3783859 -1.6056192 46.3756308 -1.6010308 46.3761474 -1.5966026 46.3761474 -1.5970359 46.3735308 -1.5938359 46.3700974 -1.5907526 46.3673974 -1.5905026 46.3659641 -1.5899692 46.3624141 -1.5896026 46.3598474 -1.5895692 46.3584474 -1.5895192 46.3561974 -1.5894026 46.3511474 -1.5894026 46.3467192 -1.5895026 46.3434359 -1.5896526 46.3413692 -1.5895692 46.3378974 -1.5893859 46.3346141 -1.5892192 46.3314308 -1.5891359 46.3293474 -1.5890192 46.3265308 -1.5888026 46.3221308 -1.5886692 46.3205141 -1.5884192 46.3166808 -1.5883526 46.3155808 -1.5883359 46.3137141 -1.5883359 46.3092859 -1.5885026 46.3056641 -1.5883859 46.3035808 -1.5883526 46.2995474 -1.5883526 46.2951192 -1.5927808 46.2951192 -1.5963026 46.2956026 -1.6006026 46.2950859 -1.6013859 46.2933026 -1.6015192 46.2925359 -1.6062026 46.2924359 -1.6103859 46.2922026 -1.6106308 46.2924359 -1.6148141 46.2922026 -1.6155192 46.2899859 -1.6199474 46.2899859 -1.6245692 46.2884526 -1.6251192 46.2868026 -1.6259359 46.2844359 -1.6267526 46.2820359 -1.6274026 46.2801859 -1.6318308 46.2801859 -1.6318308 46.2846141 -1.6311808 46.2864641 -1.6303641 46.2888641 -1.6295474 46.2912308 -1.6289974 46.2928808 -1.6284141 46.2948474 -1.6310808 46.2981692 -1.6317692 46.3005526 -1.6361974 46.3005526 -1.6408026 46.2982526 -1.6419026 46.2958526 -1.6426692 46.2941026 -1.6436192 46.2920859 -1.6443859 46.2902192 -1.6452859 46.2883359 -1.6471026 46.2843526 -1.6476359 46.2832526 -1.6481526 46.2819859 -1.6490359 46.2799692 -1.6501026 46.2776859 -1.6507359 46.2763026 -1.6518859 46.2739359 -1.6563141 46.2739359 -1.6599974 46.2743359 -1.6635859 46.2734692 -1.6651804581457972 46.2734692 -1.6606631 46.2628202 -1.6502965 46.2583535 -1.6419965 46.2492535 -1.6325298 46.2453035 -1.6238465 46.2378369 -1.6238465 46.2298965 -1.6357798 46.2279798 -1.6395631 46.2273465 -1.6489965 46.2258298 -1.6587131 46.2243465 -1.6661798 46.2229965 -1.6684631 46.2226798 -1.6768631 46.2213631 -1.6843798 46.2200465 -1.6936298 46.2186965 -1.7003465 46.2174465 -1.7093631 46.2159798 -1.7168798 46.2148631 -1.7223965 46.2139631 -1.7297298 46.2128631 -1.7355798 46.2117131 -1.7410298 46.2108465 -1.7498131 46.2093298 -1.7586465 46.2079631 -1.7659131 46.2067131 -1.7699298 46.1953535 -1.7696965 46.1913535 -1.7695131 46.1872369 -1.7696965 46.1834131 -1.7695131 46.1792965 -1.7771631 46.1776131 -1.7851035 46.1776131 -1.7854369 46.1812131 -1.7858869 46.1843465 -1.7918535 46.1920798 -1.7970535 46.1946465 -1.8063631 46.1888298 -1.8143035 46.1888298 -1.8260369 46.1960631 -1.8346535 46.1990131 -1.8413298 46.2015298 -1.8492702 46.2015298 -1.8602965 46.1985631 -1.8682369 46.1985631 -1.8752702 46.2079631 -1.8833035 46.2149131 -1.8930965 46.2116798 -1.9010369 46.2116798 -1.9129869 46.2145965 -1.9183798 46.2146298 -1.9263202 46.2146298 -1.9308202 46.2200631 -1.9423798 46.2187131 -1.9503202 46.2187131 -1.9566369 46.2309465 -1.9660369 46.2387798 -1.9751631 46.2352798 -1.9895298 46.2336465 -1.9974702 46.2336465 -2.0079965 46.2296298 -2.0159369 46.2296298 -2.0208702 46.2427298 -2.0208702 46.2506702 -2.0192535 46.2526202 -2.0165202 46.2553202 -2.0109702 46.2608869 -2.0047702 46.2673369 -2.0007035 46.2721369 -1.9968535 46.2771035 -1.9943369 46.2801535 -1.9872535 46.2882202 -1.9814535 46.2946369 -1.9728202 46.3041869 -1.9697702 46.3078869 -1.9663869 46.3115535 -1.9610856842256155 46.31739644585352 -1.9649923999999999 46.3193889 -1.9676129 46.322173199999995 -1.9595877 46.3338015 -1.9755562 46.345266099999996 -1.914518022431937 46.49484481387329 -1.9227566999999999 46.495262 -1.9075311 46.499724699999994 -1.9133488230405733 46.494831246407365 -1.910577 46.4948063 -1.906973 46.4948063 -1.9044161774152424 46.49484371655083 -1.9037628999999998 46.498989699999996 -1.9075311 46.499724699999994 -1.9227566999999999 46.495262 -1.92739 46.495295299999995 -1.9300567 46.495312 -1.9597729462755888 46.54764993164961 -1.9620444 46.548352699999995 -1.9643702101533633 46.547282810288465 -2.0057681005067565 46.57707912678141 -2.0075338 46.577749499999996 -2.0098468 46.590563499999995 -2.009910536744955 46.59087252782205 -2.0110386170850574 46.59018027877295 -2.0098468 46.590563499999995 -2.0137169 46.5834945 -2.0142177958079617 46.584397971482126 -2.0141755929661698 46.58333430548643 -2.093867657507174 46.543793343658464 -2.0945975 46.5436245 -2.176429843036943 46.65710483567169 -2.1756189 46.6596978 -2.1756189 46.6610605237119 -2.1770841 46.6587982 -2.176429843036943 46.65710483567169 -2.0945975 46.5436245 -2.097674877724508 46.54274732612397 -2.093867657507174 46.543793343658464 -2.0141755929661698 46.58333430548643 -2.0137169 46.5834945 -2.0098468 46.590563499999995 -2.0075338 46.577749499999996 -2.0129834403819236 46.57902013059416 -2.0115228 46.5764235 -2.0057681005067565 46.57707912678141 -1.9643702101533633 46.547282810288465 -1.9597729462755888 46.54764993164961 -1.9300567 46.495312 -1.9327732999999998 46.4953453 -1.93789 46.4953953 -1.9434733 46.495512 -1.9493724 46.4954453 -1.9551455999999998 46.4950373 -1.9583131999999999 46.4950373 -1.9639464999999998 46.495137299999996 -1.970237258834021 46.49526510380387 -1.9696326914276636 46.493672002493874 -1.969123 46.4937063 -1.9674896 46.493923 -1.9637896 46.493923 -1.9592063 46.4939563 -1.9555896 46.4940896 -1.949173 46.4944396 -1.946823 46.494623 -1.9428396 46.4949396 -1.939327 46.4949396 -1.937127 46.4949063 -1.9350437 46.4948896 -1.9285896 46.4950396 -1.926323 46.4950563 -1.9228104 46.4950563 -1.9204437 46.494973 -1.914518022431937 46.49484481387329 -1.9755562 46.345266099999996 -1.9900506999999998 46.335521199999995 -1.9980759 46.338878699999995 -2.0050365 46.3334739 -2.0110145 46.3331464 -2.0192034999999997 46.3358487 -2.0222333999999997 46.340434599999995 -2.0228885 46.347067599999995 -2.0183027 46.3515716 -2.0221515 46.3568125 -2.0287026999999997 46.3554204 -2.0355814 46.3600062 -2.0374649 46.363855 -2.0323058 46.371798399999996 -2.0276381 46.3771212 -2.0353358 46.3799054 -2.0464965 46.381304899999996 -2.0516828 46.382123799999995 -2.0492261 46.386696 -2.0528429 46.3959086 -2.0593941 46.4011632 -2.068402 46.398706499999996 -2.0911264 46.413787799999994 -2.0894885999999997 46.4286645 -2.0812519 46.4340482 -2.0817999 46.4487129 -2.090351 46.448149 -2.0928393 46.4497241 -2.092877 46.459802599999996 -2.0777274 46.4662173 -2.0962207999999998 46.4687422 -2.0990187 46.4722225 -2.0938323 46.483004699999995 -2.0914439 46.4916031 -2.1033179 46.4938551 -2.1110292 46.497881299999996 -2.1278956 46.4911308 -2.1301456 46.4899974 -2.132379 46.4889308 -2.1350623 46.4877641 -2.1396455999999997 46.4856641 -2.1459123 46.482797399999995 -2.153079 46.4796808 -2.1603122999999997 46.4763808 -2.1644623 46.4747474 -2.1698532999999998 46.4747474 -2.1826827 46.4823905 -2.1880056 46.494400999999996 -2.1954439 46.4939233 -2.1968769999999997 46.4994509 -2.2039741 46.505456099999996 -2.2049977 46.5083905 -2.2019877 46.5103344 -2.1985877 46.5119178 -2.1899376999999998 46.5158844 -2.183271 46.5177178 -2.1759877 46.519601099999996 -2.1678543 46.521867799999995 -2.1605043 46.524017799999996 -2.1522687 46.526105099999995 -2.1433519999999997 46.5290051 -2.135602 46.5313217 -2.1309354 46.5327384 -2.1238687 46.534905099999996 -2.1186854 46.5365551 -2.116352 46.5371884 -2.1069109999999998 46.5401971 -2.104438158085395 46.54088534972089 -2.1063975 46.5403745 -2.1084309 46.5397578 -2.1107975 46.539141199999996 -2.1143309 46.5382578 -2.1168975 46.537474499999995 -2.1190142 46.536991199999996 -2.1220309 46.5361245 -2.1291162999999997 46.5341275 -2.1321163 46.5333775 -2.137133 46.5320442 -2.142983 46.5303775 -2.1485497 46.528977499999996 -2.1554496999999997 46.527110799999996 -2.1632968 46.524403199999995 -2.166251 46.5241188 -2.1740844 46.521918799999995 -2.1816344 46.5198854 -2.1942869 46.516270999999996 -2.2032202 46.513971 -2.2111202 46.5119877 -2.2185702 46.5101377 -2.2242563 46.5104705 -2.2244837 46.520137999999996 -2.2344925 46.516157299999996 -2.2423971 46.5154749 -2.2479701999999997 46.5183183 -2.2521784 46.5274171 -2.2579219999999998 46.5351512 -2.2636088 46.530772299999995 -2.2679545 46.5312377 -2.2660874 46.5406714 -2.2692939 46.543011199999995 -2.2784690999999997 46.5390009 -2.2832841999999998 46.5347754 -2.2885907 46.5352667 -2.2886889 46.542931599999996 -2.2926723 46.5459047 -2.2980556 46.5500547 -2.3038388999999997 46.5530881 -2.3117365999999997 46.5518199 -2.3192502 46.5541341 -2.3192968 46.5593801 -2.3173831 46.5671055 -2.3099148 46.579487199999996 -2.3195449999999997 46.5813543 -2.3348584 46.5681735 -2.3377928 46.5697431 -2.3314463 46.5803887 -2.3345172 46.5840738 -2.3409318999999997 46.5796381 -2.344344 46.5811394 -2.3436615 46.5838008 -2.3392948 46.5877674 -2.3329282 46.5933674 -2.3294782 46.5966174 -2.3171155999999997 46.6074123 -2.3130823 46.610945699999995 -2.3082156 46.615445699999995 -2.3056655999999998 46.6174123 -2.3005155999999998 46.621928999999994 -2.2976655999999998 46.624429 -2.2902967 46.6308192 -2.28753 46.6336192 -2.2838967 46.637202599999995 -2.2820633 46.6386859 -2.2782299999999998 46.6416026 -2.2640237 46.6549084 -2.2588904 46.6586584 -2.255757 46.6613417 -2.254057 46.662808399999996 -2.2521904 46.664375 -2.2374777999999997 46.676063299999996 -2.2305444 46.6821633 -2.2293278 46.6832967 -2.2262611 46.6860633 -2.2142075 46.696604 -2.2114096 46.697559299999995 -2.2069739 46.6936696 -2.2011732999999998 46.7002208 -2.1938714999999998 46.7017221 -2.1901865 46.700425499999994 -2.1841812 46.703973999999995 -2.1810421 46.701653799999995 -2.1733990999999997 46.6972181 -2.1682126999999998 46.6991971 -2.1636405 46.7012444 -2.1581129999999997 46.7000843 -2.1532678 46.7027457 -2.1517416690600806 46.7013522 -2.1490478 46.7013522 -2.1452478 46.7008689 -2.1376022 46.7015189 -2.1325022 46.7019355 -2.1275978 46.7019355 -2.1186478 46.6998689 -2.1147478 46.6993855 -2.1067189 46.6993522 -2.1018145 46.6993522 -2.0959355 46.6994022 -2.0910311 46.6994022 -2.0861022 46.6994855 -2.0751311 46.6994855 -2.0698022 46.6983022 -2.0648978 46.6983022 -2.0579189 46.6993689 -2.0530145 46.6993689 -2.0467855 46.7000522 -2.0381855 46.7014522 -2.0337022 46.7029189 -2.0315855 46.7036189 -2.0266811 46.7036189 -2.0216022 46.7049522 -2.0166978 46.7049522 -2.0101645 46.7005689 -2.0061645 46.6990189 -2.0038145 46.6962689 -2.0002645 46.6920022 -1.9985978 46.6899355 -1.9976311 46.6886022 -1.9932811 46.6826689 -1.9919645 46.6810022 -1.9910478 46.6798689 -1.9900478 46.6786522 -1.9890145 46.6774189 -1.9869645 46.6748689 -1.9830311 46.6700189 -1.9794811 46.6656189 -1.9755311 46.6606355 -1.9712311 46.6555022 -1.9701478 46.6542522 -1.9680145 46.6515355 -1.9632145 46.6449855 -1.9589478 46.6401355 -1.9560811 46.6370855 -1.9502811 46.6301689 -1.9477478 46.6278522 -1.9444311 46.6244022 -1.9406145 46.6201189 -1.9385811 46.6162355 -1.9373029077292014 46.61373934504425 -1.9333162 46.613550499999995 -1.930947 46.611747699999995 -1.9299992 46.6064558 -1.9272742999999999 46.604481299999996 -1.9245097999999998 46.5967409 -1.9221404 46.591725499999995 -1.9183358 46.591689599999995 -1.9166367999999998 46.5905298 -1.9140313999999998 46.5913251 -1.9115358 46.591489599999996 -1.9109049999999999 46.5879244 -1.9054282999999999 46.5852082 -1.9041782999999999 46.5845748 -1.9026782999999998 46.5837248 -1.9014948999999999 46.583141499999996 -1.8978783 46.5814248 -1.9013063 46.572840799999994 -1.8970555 46.5719632 -1.896507 46.568919099999995 -1.8946695999999998 46.567876899999995 -1.8949163999999998 46.5650522 -1.8962052999999999 46.563680999999995 -1.8963972999999998 46.5606368 -1.8932708999999999 46.5601432 -1.891406 46.5573459 -1.8849641 46.5583198 -1.8817964999999999 46.5583198 -1.8778964999999999 46.557236499999995 -1.8757465 46.5559198 -1.8761579 46.5543566 -1.8784615999999998 46.5535338 -1.8754448 46.5485699 -1.8716876 46.5452241 -1.8672448 46.5445934 -1.8663946999999999 46.543770599999995 -1.8669156999999998 46.542234799999996 -1.8736312 46.537297599999995 -1.8756811999999998 46.5358642 -1.8775644999999999 46.534547599999996 -1.8810812 46.531747599999996 -1.8801728999999998 46.5283513 -1.8714847 46.524560199999996 -1.8685995 46.522117099999996 -1.8693522 46.5191893 -1.8744466 46.518991799999995 -1.8795804999999999 46.5154376 -1.8821078999999998 46.511883399999995 -1.8859781 46.50438 -1.8768483 46.5001306 -1.8701649 46.4978139 -1.8647315999999998 46.4960472 -1.8641094999999999 46.4950597 -1.8644980999999998 46.4941684 -1.8666456130576035 46.494206723690546 1961-08-01T00:00:00 1962-06-30T00:00:00 6.5999999046325684 48.200000762939453 vertical-crs-id-0 not known vertical-cs-01 coordsys-axis0id Z down 23.834510520001764 http://www.seadatanet.org/urnurl/SDN:L11::D01 Lowest Astronomical Tide not known XYZ ASCII 1.0 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://diffusion.shom.fr/ distributor 0.45400000000000001 https://diffusion.shom.fr WWW:LINK-1.0-http--link Shom marketplace to download surveys Espace de diffusion du Shom pour télécharger les levés Shom marketplace to download surveys Espace de diffusion du Shom pour télécharger les levés https://data.shom.fr WWW:LINK-1.0-http--link Shom Geoportal Portail d information géographique du Shom https://services.data.shom.fr/INSPIRE/wms/v?service=WMS&request=GetCapabilities&version=1.3.0 OGC Web Map Service Service de consultation LEVES_BATHY_AVANT_1970_WMSV Access point WMS Access point WMS http://www.sdn-taskmanager.org/ WWW:LINK-1.0-http--link SeaDataNet web data access with registration dataset Uncertainty_Horizontal 2019-12-05 publication 110 true Uncertainty_Vertical 2019-12-05 publication 0.02z+0.5 true Bathymetric datasets, collected before 1970, are historical surveys acquired with leadlines (and single-beam echosounders after 1930-1940). Quality controls and qualification, conducted by the Shom, on these datasets are not exhaustive. Datasets may present significant uncertainties and errors may remain. Ask the data centre for details. Levés bathymétriques collectés avant 1970, données historiques principalement acquises au plomb de sondes (et au sondeur monofaisceau après 1930-1940). Le contrôle et la qualification conduits par le Shom sur ces données ne sont pas exhaustifs. Les données peuvent présenter des incertitudes importantes et des erreurs peuvent subsister. Metadata publicly available Métadonnées publiques et gratuites