BAE Systems Marine Ltd. was the shipbuilding subsidiary of BAE Systems, formed in 1999, which manufactured the full range of naval ships; nuclear submarines, frigates, destroyers, amphibious ships.In 2003 BAE Systems Marine was split into separate submarine and surface ship units; BAE Systems Submarines and BAE Systems Naval Ships. The latter was merged into a BAE Systems/VT Group joint venture, BVT Surface Fleet in 2008, which subsequently became BAE Systems Surface Ships in 2009.