USS Oklahoma parbuckled in 1943 after the Japanese attack on Pearl Harbor Engineers on Monday succeeded in wresting the hull of the shipwrecked Costa Concordia from the Italian reef where it has been stuck since it capsized in January 2012, leaving them cautiously optimistic they can rotate the luxury liner upright and eventually tow it away. The operation, known in nautical parlance as parbuckling, is a proven method to raise capsized vessels. The USS Oklahoma (above) was parbuckled by the U.S. military in 1943 after the Japanese attack on Pearl Harbour.Picture: Naval History & Heritage Command