View from a U.S. ship in an Atlantic convoy during World War 2. A large transport ship in camouflage is seen to port, astern. Weather is warm and sunny. Sailors aboard the ship as they work with tools. A sailor splices a line. One paints painstakingly. Sailors wash and clean parts in a bucket of solvent. A Brooklyn-class light cruiser, in camouflage, is seen on port side. Two aircraft fly overhead. The sea is calm. Complete change of scene to harbor at U.S. Naval Station, Argentia, Newfoundland. A Destroyer passes the USS New York (BB-34) anchored in the harbor. Crewmen on deck in warm clothing. Snow-covered hills in background. Naval Ensign displayed on stern flag mast. Anchor chain of the ship laid out on deck. A plane flies overhead.
Gun crew,on the USS New York (BB-34),wearing steel helmets, check out her 3-inch antiaircraft gun on the stern deck, as she departs from U.S. Argentia Naval station, Newfoundland, during World War 2. Sailors are dressed in winter clothing. Snow-covered hills in background. As they are underway, a large transport ship is seen astern. Scene shifts to warmer, sunny weather at sea. Sailors play a game with quoits on the deck of the USS New York. Others relax in a warm sunny spot. Sailors stand on the deck. An island visible nearby. Sailors download a bomb from a Vought OS2U Kingfisher aircraft aboard the battleship New York. International maritime flags displayed near the bridge.
U.S. efforts to inhibit German U-boat activity near its waters early in World War 2. American patrol boats dropping depth charges off the U.S. Atlantic coast. A U.S. Navy blimp on the lookout for submarines. View inside gondola of the blimp. Bomb being loaded on a U.S. Navy patrol bomber. Catalina flying boat enters water, takes off, and flies low over an Allied ship at sea. View inside Catalina Flying Boat aircraft. Navigator aboard the Catalina measures on chart with pair of dividers. An American flag hangs over his work station. Pilot in the cockpit. Aerial view of Catalina Flyling Boat in flight. Pilot and copilot look out cockpit window. A U-boat on the surface of the water. The Catalina dives down towards the enemy sub. Inserted sequence shows bow of German submarine plowing ahead, followed by scenes below deck where German crewman hurry to their stations and the U-boat submerges. U.S. Navy Catalina flying boat flies low over water and drops two depth charges, that explode. Inserted view of a large depth charge explosion. Pilot and copilot looking out cockpit window act as if they had just sunk a submarine. View of Catalina flying boat on return flight.
Shows conflict between German U-boats and Allied convoys in Atlantic, during World War 2. Clip contains actual World War 2 footage, but sound effects, narration, and editing relate a fictionalized story. Destroyer escort with a supply convoy in the Atlantic. Sailor stands next to a steel drum depth charge chained to the deck. View of a surfaced German U-boat ostensibly tracking a convoy. Supply ships silhouetted against the sky in evening. Captain at periscope in submerged German submarine.The boat surfaces and crew goes on deck to view convoy through binoculars. Order is given to launch a torpedo. Explosion and fire seen as it hits a ship. Destroyer escort ship underway. U.S. sailors aboard convoy escort ship sight a German submarine periscope. View inside the U-boat when they know they have been detected. The U-boat crash dives and the Captain calls for silence. Crew on deck of escort ship begin launching depth charges in battle which explode to her stern. One damages the submarine and water enters it.
Animated map shows World War 2 supply convoy routes to Murmansk, Soviet Union. German Junkers 88 bombers, JU 87, Stuka dive bombers, Fokker D.XXI aircraft; and Dornier Do-17 bombers are seen as aircraft used to disrupt the convoy traffic. An officer aboard a convoy escort ship looks through binoculars. A group of German Stuka dive bombers peels off to attack the convoy. Escort warships fire antiaircraft guns at the attacking German aircraft. bombs striking a supply ship. German Me 109 aircraft flying over the convoy. An attacking German aircraft is downed and crashes into the sea. A bombed supply freighter rapidly sinks. Smoke rises from another burning ships. A long line of supply ships arriving at Russian port. Aircraft and tanks being offloaded.
Ribs of submarine being put into place. Plates being welded onto ribs. Conning tower being attached to hull. Conning towers on production line. Diesel engine on production line. Lathe making cut. Diesel engine being assembled. German submarine being slid down ways for launching ceremony. German submarine on trial run in North Atlantic. Skipper of German submarine. German submarine steps in sea.