In 1939, the U.S. Navy submarine Sculpin helped to rescue the crew of her sister ship Squalus, which had flooded and sunk off the coast of Maine.

After the rescue the Sculpin went on to serve in World War II, where she was sunk in 1943 by a Japanese destroyer. Twenty-one of her crew were captive aboard a Japanese aircraft carrier when the carrier itself was sunk by torpedoes from an American sub.

The attacking sub was the salvaged and repaired Squalus — the same ship that Sculpin had saved four years earlier.