Chantiers de l'Atlantique, is a Saint-Nazaire, France based shipyard; which forms part of the STX France SA business unit, majority owned by STX Europe with a 66.6% stake and the balance 33.34% held by the French state. It is one of the world's largest shipyards, and built the iconic ocean liner the RMS Queen Mary 2.The shipyard was owned by Alstom since 1984, and became part of Aker Yards when Aker Group acquired the Alstom Marine business in 2006.