In March of 1943, the Pacific War had reached a fever pitch. The U.S. Navy’s submarine force, already proving itself to be one of the most effective weapons in America’s arsenal, was actively hunting Japanese shipping in the vast, contested waters of the South Pacific. Submarines, operating in deadly cat-and-mouse games with Japanese destroyers, were crucial in strangling enemy supply lines. However, with every daring success, there was an equal measure of peril. It was in these waters, north of the Admiralty Islands, that USS Triton (SS-201) embarked on her sixth and final war patrol, never to return.