Norfolk Naval Shipyard (NNSY) in Portsmouth, Virginia, is one of the largest, oldest, and most multifaceted industrial facilities belonging to the U.S. Navy. The Shipyard specializes in repairing, overhauling, and modernizing ships and submarines. From the age of sail to nuclear power, the Shipyard has measured up to the highest standards of ship construction, maintenance, and modernization. Our mission is to design, build, deliver, and maintain ships and systems on time and on cost for the U.S. Navy. We are the Navy’s stewards to meet this challenge.