Service hydrographique et océanographique de la Marine

The Service hydrographique et océanographique de la Marine (SHOM) is the French Navy's hydrographic and oceanographic service, primarily focused on maritime charting, seabed mapping, and oceanographic data collection to support naval navigation and operations. While not directly involved in aerospace work, its defense contributions include providing critical environmental intelligence for naval aviation, submarine deployments, and maritime surveillance missions essential to France's aerospace-integrated defense strategies.