National Steel and Shipbuilding Company has been designing and building ships since 1960, specializing in auxiliary and support ships for the United States Navy and oil tankers and dry cargo carriers for commercial markets. Located in San Diego, Calif., NASSCO employs more than 4,000 people and is the only major ship construction yard on the West Coast of the United States. NASSCO has delivered more than 110 ships to the worlds fleets including 57 ships to commercial customers, becoming Americas leading commercial shipbuilder during this period and 53 auxiliary and support ships for the U.S. Navy. These have included oil tankers, ferries, containerships and oceanographic research ships for commercial customers and hospital ships, fast combat support ships, tank landing ships and roll-on/roll-off ships for the U.S. Navy. NASSCO is one of three shipyards in the Marine Systems group of General Dynamics Corporation. General Dynamics is headquartered in Falls Church, Va.