The American force was commanded by Captain Daniel V. The action took place in the Atlantic Ocean, at Latitude 21-30N, Longitude 19-20W, about 150 miles off the coast of Rio De Oro, Africa. Navy vessel had captured an enemy vessel at sea since the nineteenth century. On 4 June 1944, a hunter-killer group of the United States Navy captured the German submarine U-505. The key books from U-559 enabled the Allies codebreakers to understand how the fourth rotor on the Enigma machine worked and to start reading the messages to German submarines again. However, the recovery of the signal key books was important because the addition of the fourth rotor in the early months of 1942 had prevented the Allied codebreakers from reading messages to the German submarines. Then two British sailors drowned trying to remove the Enigma machine when U-559 quickly sunk. After the captain was killed and the crew abandoned the U-boat, a British boarding party from HMS Petard entered the submarine and recovered the signal key books. On 30 October 1942, U-559 was damaged by five British destroyers in the eastern Mediterranean. The British used this submarine for testing to determine the capabilities of the German submarine, including the depth to which the German submarines could operate. Later the boat was recommissioned as a British submarine, HMS Graph. In Iceland, the British examined the submarine. While the submarine was escorted to Iceland, the German crew threw the Enigma machine and all code books and keys overboard.

On 27 August 1941, the inexperienced crew of U-570 surrendered their boat in the North Atlantic to a British aircraft. Although taken under tow by the British, U-110 flooded and sank about 100 hundred miles from Iceland. When the German crew abandoned their damaged submarine, a boarding party from Bulldog got on board and recovered a working Enigma machine, its cipher keys, keybooks and other cryptological records. On, three British destroyers, HMS Bulldog, HMS Broadway, and HMS Aubrietia, attacked U-110. and Britain During World War IIĭuring World War II, British and American naval forces boarded several German submarines after they were damaged, scuttled, or surrendered. Rather, it is a fictional narrative, loosely based on events involving several different German submarines during World War II, including U-110, U-570, U-559, and U-505.īackground on Events Involving German Submarines Boarded by the U.S. The Movie U-571 is not based on the actual circumstances of the naval career of the German Submarine named U-571.

Navy movies sub.war world war 2