Seamless Shom nautical charts - West Africa - EAtHC is a product composed of digital images taken from Shom nautical charts, with no additions, legends or georeferencing information. At a given scale, it is possible to view only the maps with a scale that allows a correct display. The footprint of all the maps composing this product are shown. Unless exceptional circumstances apply, this product is updated on a monthly basis and the modified grid squares are re-published, replacing the previous versions. All corrections, publications and editions with an effect on the reference nautical charts are taken into consideration.

Seamless Shom nautical charts - West Africa is a product composed of digital images taken from Shom nautical charts, with no additions, legends or georeferencing information. At a given scale, it is possible to view only the maps with a scale that allows a correct display. The footprint of all the maps composing this product are shown. Unless exceptional circumstances apply, this product is updated on a monthly basis and the modified grid squares are re-published, replacing the previous versions. All corrections, publications and editions with an effect on the reference nautical charts are taken into consideration.

The product is a digital solution showing superficial sediments on the sea floor along coasts in mainland France.

Image numérique scannée non géoréférencée de la 3664 Date de publication : 1878 Date de révision : 1906 Support de l'original: papier Dimensions : 1079mm x 765mm Description : D'après le levé exécuté en 1874 par le capitaine H. C. Saint John de la Marine Royale anglaise. Les longitudes sont rapportées à celle de Yokohama(Mole de la douane japonaise) pour laquelle on adopte 137° 20' 18" Est. La longitude du même point est d'après le sanglais de 137° 18' 37.45". Nota : La partie de côte au Nord de la Baie Tamabé est empruntée à la carte de la Mer Intérieure. Par L. Manen, ingénieur hydrographe. Août 1887 : La longitude adoptée pour Yokohama Naval Hôpital Square étant 137° 19' 5" E, celle du Môle de la douane japonaise devient 137° 18' 35" E au lieu de 137° 20' 18" E, toutes les longitudes de cette carte doivent être diminuées de 0° 1' 43".

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