Back to ressources

Submarine cables

Understanding the deployment of submarine fibre optic cables

This poster focuses on the deployment of a submarine cable, i.e. laying it in coastal areas and on the seabed. A lot of equipment is mobilised for this purpose, from survey boats and cable-layers to ploughs and rovers. Without going into the details and the upstream (route, etc.) and downstream (maintenance, etc.) stages, this poster gives an idea of the technical and human resources involved in the 436 submarine cables in service around the world (in 2021) for a cumulative distance of 1.3 million kilometres.

The general principle of the deployment, as well as the constitution, are explained using data from Orange Marine (vessels: Pierre de Fermat and Urbano Monti, rover: Hector 7).