On Friday, October 13th, 1944, TF 38 was conducting strikes off the coast of Formosa (now Taiwan). It was the second and final day of an operation to wipe out Japanese air strength on the island in preparation for the upcoming landings on Leyte, and they had been reasonably successful all day. But as evening fell, a group of Japanese Betty bombers attacked, coming in so low that radar failed to spot them. Four went for the carrier Franklin and while all of their torpedoes missed, one crashed onto her deck, bursting into flames before sliding over the side.1 Eight others bored in on heavy cruiser Canberra,2 and while six were shot down by the group's AA fire, one of the torpedoes struck home, detonating at the boundary between the two aft boiler rooms. A mast-high fireball was followed by the usual geyser of water, and violent vertical vibrations ran through the hull. Both boiler rooms flooded almost immediately, leaving no survivors, and fuel oil blown out of the air intakes from boiler 4 covered the deck nearby, but fortunately didn't ignite.

Canberra with 3rd Fleet a few days before being torpedoed
But the bigger problem was that the explosion was directly under one of the bearings for shaft 1, which was ripped from the reduction gearing forward and thrown upwards and inboard, tearing holes in the bulkheads of both the fore and aft engine rooms. Water began pouring into both, filling the aft engine room in 4 minutes and the forward one in 10. Although the boilers in the forward two rooms remained intact and continued to generate power, Canberra was dead in the water. Her rudder was also jammed over, the result of a last-minute attempt to dodge the torpedo, and while the emergency diesel generator would normally have provided power to the steering gear, breakers kept tripping. Eventually, the rudder was put amidships using the ship's roll, opening the hydraulic valves on the steering gear to allow it to swing amidships, then closing them to stop it swinging back. The electrical problems were not helped by numerous leaks in spaces fore and aft of the flooded machinery spaces, as the stuffing glands for electrical cables proved to be less watertight than expected. The leaks were all controlled fairly quickly, thanks to the cruiser's highly-trained damage control team, and only a few spaces saw more than a couple inches of water. Read more...





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