The
Naval Sea Systems Command (
NAVSEA) is the largest of the
United States Navy's five "systems commands," or
materiel (not to be confused with "material") organizations. NAVSEA consists of four shipyards, nine "warfare centers" (two
undersea and seven
surface), four major shipbuilding locations and the NAVSEA headquarters, located at the
Washington Navy Yard, in
Washington D.C.