A line of aircraft carriers at sea in the Pacific Theater. U.S. sailors stroll on deck of warship, in the sunshine. An American Destroyer, USS Flusser (DD-368) underway. United States naval officers consult a navigation chart aboard ship. An American sailor signals with semaphore flags. A U.S. warship in the North Atlantic. U.S. sailor (radioman) alerts all ships in a convoy to presence of a German surface raider, and gives its position as Longitude 23:45 West and Latitude 63:14 North (vicinity of Iceland). A British sailor (a Leading Telegraphist - radio operator) aboard a British warship, acknowledges " OK USA, OK USA, thank you very much." Ships in convoy seen. British Destroyer HMS Amazon (D39) launches depth charges. A Royal Navy Commander looks through binoculars. The British Destroyer HMS Anthony (H40) steams past.