Following outfitting and shakedown, Trutta underwent 30 days of intensive training in the Portsmouth-New London area and then set a course southward and steamed via the Canal Zone to arrive at Pearl Harbor on 25 February 1945.
Late in the day, on 27 April, as she passed between Akuseki Shima and Takara Shima in the northern Ryukyus, she made contact with a Japanese plane.the