The cruiser was returning from its mission to deliver components for the atomic bomb that would soon be dropped on the Japanese city of Hiroshima when it was fired upon in the North Pacific Ocean by a Japanese submarine on July 30, 1945.

It sunk in 12 minutes, according to the Naval History and Heritage Command in Washington. No distress signal was sent. About 800 of the 1,196 crew members aboard survived the sinking, but only 316 were rescued alive five days later, with the rest lost to exposure, dehydration, drowning and sharks.