Correct. O'Kane was the skipper of the USS Tang. He was the most succesful US Sub skipper of the war. The only thing that finally stopped him was a malfunctioning torpedo that had a circular run and sank the Tang. O'Kane survived though and saw the end of the war as a POW.
Great story if you ever get a chance to read it. The Bio I recommend is The Bravest Man by William Tuohy
O'Kane himself wrote a great book called Wahoo: The Patrols of America's Most Famous World War II Submarine