National Steel and Shipbuilding Company

National Steel and Shipbuilding Company, commonly referred to as NASSCO, is an American shipbuilding company with three shipyards located in San Diego, California, Norfolk, Virginia and Mayport, Florida. It is a division of General Dynamics. The San Diego shipyard specializes in constructing commercial cargo ships and auxiliary vessels for the US Navy and Military Sealift Command; it is the only new-construction shipyard on the West Coast of the United States. The Virginia shipyard primarily performs ship repairs and conversions for the U.S. Navy.