United States Navy's dirigible Los Angeles moored to 'USS Patoka' for a test trip from Lakehurst, New Jersey to Montauk Harbor, Long Island. Dirigible Los Angeles being moored on the mast of USS Patoka in the North Atlantic Ocean. Crew members walk out of the dirigible. A United States aircraft dives.
Allied supply convoy in North Atlantic ocean during World War 2. British Naval officers aboard warships escorting the convoy. Depth charges exploding; submarine periscope seen in water; depth charges being launched from warship; Officer looks through binoculars; black smoke rising from a freighter torpedoed by a German submarine. Explosion on the freighter. Survivors covered in oil being rescued from torpedoed ship. British woman working in a British headquarters center plotting positions of ships on a large wall map.