Yes my mistake, PT-109 was a PT boat (patrol torpedo boat) last commanded by Lieutenant (junior grade) John F. Kennedy, future United States President, in the Pacific theater during World War II. His actions to save his surviving crew after the sinking of PT-109 made him a war hero. PT-109's collision with a Japanese destroyer contributed to Kennedy's long-term back problems and required months of hospitalization at Chelsea Naval Hospital. Kennedy's postwar campaigns for elected office referred often to his service on PT-109.