The product contains a description of submarine cables and pipelines brought to the attention of Shom on French areas of responsibility. These are 2D linear objects of the seabed that divide into two categories: • The submarine cables: these are cables placed on the seabed where electricity or information (telecommunication) flows. They represent the vast majority of objects (more than 90%); • Emissaries and submarine pipes: these are pipes that allow the discharge, sampling or circulation of fluids.

Cette carte représente un ensemble de limites réglementées en mer (délimitations maritimes, limites de compétences, zones de responsabilités, ...), quelques repères divers (emplacements de stations SNSM, sémaphores, installation nuclaire), les activités en mer (granulats, champs éoliens, zone de clapages zones d'attente, zone de mouillage, ZMFR...).