2 images. Weapons ...Mystery Barge and Secret Navy Weapon, Wilmington Harbor, 29 October 1951. Barge carrying secret weapon aboard Navy Pontoon Barge, launched from Wilmington Boat Works...No detailed information given by the Navy, which permitted pictures to be taken.; Supplementary material reads: "Big secret! Carrying a secret weapon boardering on the fantastic but unrecognizable to the lay onlooker, this Navy pontoon barge is shown before, during, and after its launching from the Wilmington Boat Works ways in Wilmington yesterday morning. Navy permitted launching pictures but not detailed explanation of barge's use".