CentralNotice Parbuckle salvage From Wikipedia, the free encyclopedia Jump to: navigation , search The capsized battleship USS Oklahoma is rotated upright while under salvage at Pearl Harbor, Hawaii, 8 March 1943. The ship is in the 130-degree position, with its bow on the left and the starboard deck edge just rising from the water. Parbuckle salvage , or parbuckling , is the righting of a sunken vessel using rotational leverage. A common operation with smaller watercraft , parbuckling is also employed to right large vessels. In 1943 USS Oklahoma was rotated nearly 180 degrees to upright after being sunk in the attack on Pearl Harbor , and the Italian cruise ship Costa Concordia was successfully parbuckled off the west coast of Italy in September 2013, the largest salvage operation of that kind to date. 1 Mechanical advantage and difficulties 2 Righting of t...