July 30, 2024 — It was 79 years ago when a Japanese submarine torpedoed the USS Indianapolis, a heavy cruiser carrying nearly 1,200 sailors and Marines. The ship was sailing back to the Philippines after delivering components for “Little Boy,” the atomic bomb that helped end World War II. It sank in 12 minutes.
What followed next resulted in the greatest single loss of life at sea, on a single ship, in the history of the U.S. Navy.
Read IndyStar’s prior coverage about the doomed heavy cruiser and the men who survived its tragedy.
When did the USS Indianapolis sink?
The USS Indianapolis sank shortly after midnight on July 30, 1945. The heavy cruiser was struck by two Japanese torpedoes. The first torpedo blew the bow off the ship, according to the National World War II Museum in New Orleans. A second torpedo blasted into its midsection near the powder magazine, creating an explosion that literally split the ship in two.
How big was the USS Indianapolis?
The USS Indianapolis was 610 feet 3 inches (186 meters) long, according to Britannica. Roughly 900 men survived the ship sinking, of which only a little more than a third would be pulled from the water.