Seventy-two years after two torpedoes fired from a Japanese submarine sunk cruiser USS Indianapolis (CA-35), the ship’s wreckage was found resting on the seafloor on Saturday - more than 18,000 feet below the Pacific Ocean’s surface. Source 1u.
World War II Cruiser USS Indianapolis (Hover)
Yeah, I read about this many years ago. The ship was on a secret mission to deliver the A Bomb and the navy didn't even know it was missing for days. That means the search started very late. That as many survived as did is a miracle.