Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS & IMF) is a United States Navy shipyard covering 179 acres (0.7 km²) on Puget Sound at Bremerton, Washington in uninterrupted use since its establishment in 1891; it has also been known as Navy Yard Puget Sound, Bremerton Navy Yard, and Puget Sound Naval Shipyard.