En route to Cam Ranh Bay "Myōkō" was hit by one torpedo from a spread of six, fired by the submarine at 17:35 on 13 December 1944 on her aft port side, blowing away her stern, and leaving her unable to steer. She went dead in the water. Despite the extensive damage to the aft, one port screw remained operable and she could make . Unable to steer, she was towed by destroyer (which assisted in damaging "Bergall", which survived and returned to Fremantle) and several other ships to Singapore harbor for repairs; however, there were insufficient materials in Singapore to complete the repairs for both "Myōkō" and "Takao", the latter which had been severely damaged by two submarine-launched torpedoes prior to the Sibuyan Sea battle.