"Frenchy to Blue Jay: I have a possible sound contact." With that radio transmission from the escort aircraft carrier USS Guadalcanal, sent shortly after 11 a.m. June 4, 1944, the German submarine U-505 began its long journey from deadly deep-sea predator to the most celebrated artifact in the Museum of Science and Industry . Nearly scuttled by the Navy after the war, it was brought to the museum through the advocacy of Chicago native Daniel Gallery — the captain in charge of U.S. Navy Task Group 22.3, which captured the sub — opening in 1954 at the museum.