The Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility is a United States Navy shipyard located in Pearl Harbor, Hawaii on 148 acres. It is one of just four public shipyards operated by the United States Navy. The shipyard is physically a part of Joint Base Pearl Harbor–Hickam. History Pearl Harbor started as naval facility and coaling station after a December 9, 1887, agreement. King Kalākaua granted the United States exclusive rights use Pearl Harbor as a port and repair base. The United States–Hawaii relationship started with the Reciprocity Treaty of 1875, a free trade agreement. The Naval Station had existed in Pearl Harbor since 1898, but in 1908 the United States Congress allocated $3 million to build the shipyard, then called Navy Yard Pearl Harbor. The shipyard grew quickly, and work began on the first drydock, which collapsed before opening in 1913. After rebuilding, Dry Dock #1 was opened August 21, 1919. Through these years, the shipyard was just a part of the Naval Station. The shipyard officially became its own entity in December 1945 as part of the Navy's effort to separate military from industrial operations. The shipyard is on the shore of East Loch across from Ford Island. The Navy built 1010 dock, a 1010-foot wharf at the Navy Yard that had berth B-1, B-2 and B-3. Later 1010 dock was lengthened to longer than 1010 feet. The ships USS Helena and USS Oglala (that sank) were docked during the attack. Bravo Docks, are a 2,900-foot wharf at the Navy Yard with berth B-22 to B-26. The destroyer USS Bagley was at Bravo Dock in the attack. Navy Yard has Pearl Harbor berths B-1 to B-26. <ref>Bravo Dock loc.gov</ref> The shipyard has grown to four dry docks, which are mainly used for repairing and maintaining nuclear submarines. The shipyard has about 5,800 civilian employees and 500 military personnel. Dry docks Naval Inactive Ship Maintenance Facility The Naval Inactive Ship Maintenance Facility (NISMF) at Pearl Harbor, Hawaii, ports logistic support cargo ships and amphibious transport dock ships. The NISMF Pearl Harbor ships are kept afloat and in fair working order, so they can be reactivated for emergency use. Some of the ships are decommissioned US Navy ships and are pending determination of their final fate. Naval Inactive Ship Maintenance Facility is part of the United States Navy reserve fleets. World War II In December 1939 a contract was