Later in the morning, "Sailfish" fired another spread of three torpedoes, from only , scoring two final hits. Loud internal explosions and breaking-up noises were heard while the submarine dived to escape a depth charge attack. Abruptly, a cruiser appeared and, fearing that she would broach the surface, "Sailfish" went to , losing a chance at this new target. Shortly afterwards, the carrier "Chūyō" () went to the bottom, the first aircraft carrier sunk by an American submarine in the war, and the only major Japanese warship sunk by enemy action in 1943. In an ironic twist, "Chūyō" was carrying American prisoners of war from , the same boat that had helped locate and rescue "Sailfish"—then "Squalus"—over four years before. Twenty of the 21 US crew members from "Sculpin" were killed. None, however, were of the original rescue crew. 1,250 Japanese were also killed.