I think they got the name wrong. I think it's supposed to be the U-505, and the US captured it, I know that. (thought there may have been a U-571 the Canadians captured, i dunno) It was the first enemy man-of-war to be boared by the Americans since the war of 1812. There was an aircraft carrier, the Quadalcanal, and five Destroyer escorts pursuing it. Two of them were the Chatalain and the Pope, and I can't remember the other three.