How Did 21 Winches Roll a Capsized Battleship Upright? #ussoklahoma #pearlharbor #navalhistory #salvage #engineering USS Oklahoma capsized at Pearl Harbor and came to rest nearly upside down. In 1943 the Navy rolled her upright: 21 winches on Ford Island, each pulling through a 17-part block and tackle, with cables running over wooden A-frames about 40 feet high on her hull. A taller frame is a longer lever, so the same pull makes more turning force. Compressed air lightened her, coral at the bo
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How Did 21 Winches Roll a Capsized Battleship Upright? #ussoklahoma #pearlharbor #navalhistory #salvage #engineering USS Oklahoma capsized at Pearl Harbor and came to rest nearly upside down. In 1943 the Navy rolled her upright: 21 winches on Ford Island, each pulling through a 17-part block and tackle, with cables running over wooden A-frames about 40 feet high on her hull. A taller frame is a longer lever, so the same pull makes more turning force. Compressed air lightened her, coral at the bo
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