Chantiers de l’Atlantique S.A.S. (Chantiers de l’Atlantique) is a French shipbuilding and marine engineering company based in Saint‑Nazaire. It designs, builds, and integrates large, complex vessels—particularly cruise ships and specialized maritime units—as well as offshore structures. The company provides engineering, project management, fabrication, and commissioning services across the full lifecycle of major marine projects.
Beyond shipbuilding, Chantiers de l’Atlantique contributes to energy infrastructure by delivering offshore electrical substations and other modules that connect wind farms and related assets to national grids. Its activities span structural fabrication, topside integration, and high‑voltage systems assembly for offshore projects in Europe, supporting the industrial supply chain for renewable power and grid reliability.
