Built in 1891, the Puget Sound Naval Shipyard once served as a naval station and in the First World War, the shipyard served as the construction site for a wide fleet of marine vehicles that included, among other things, twenty-five submarine chasers, a pair of ammunition ships, seagoing tugs, 2 minesweepers, six submarines, and around 1,700 small boats. In the Second World War, the shipyard served a different purpose, working more as a maintenance and repair site for damaged battleships of the country as well as the rest of the Allied forces. The shipyard also played a role in the Korean War, serving as a construction site this time for guided missile frigates. In 1961, the shipyard was officially recognized as a submarine repair facility. Four years later, it was also established as a repair facility for nuclear capable systems. In 1987, the USS Nimitz made its home in the shipyard. Today, the historic shipyard is known as the West Coasts? biggest shipyard as well as being the most diverse. The 327-acre property has nine piers as well as less than 340 acres of submerged land.