U-boat is the anglicized version of the German word U-Boot ( listen), a shortening of Unterseeboot, which means "undersea boat". While the German term refers to any submarine, the English one (in common with several other languages) refers specifically to military submarines operated by Germany, particularly in World War I and World War II. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role (commerce raiding), enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from Canada, the British Empire and the United States to the islands of Great Britain and (during World War II) to the Soviet Union and the Allied Countries in the Mediterranean. Austro-Hungarian submarines of World War I (and before) were also known as U-boats.Read more at Wikipedia
Documentary Episodes that cover U-Boats
While the British ships are relying on the safety of convoys the U-Boats are hunting in packs. The Canadians and Americans join the fight and help escort the cargo ships destine for Britain. The Allies' fight is helped with the use of new technological advances, like the use of radar on planes.
Movies that include U-Boats
With a war correspondent on-board, U-96 takes a tour of duty hunting British commercial shipping in the Atlantic. The crew is taken through the torment of being depth-charged and having to spend so much time in such a confined space.
A crippled U-Boat, U-571, is about to be resupplied with mechanics and parts. The Allies get hold of this information and plan to send an American submarine, S-33, to pose as the resupplying submarine in order to get aboard and cease the enigma machine on-board before the Germans sabotage it. The Americans manage to get on board U-571 and capture the enigma machine intact. When transferring the enigma to the S-33 another u-boat appears and sinks the S-33. A few of the Americans manage to take control of U-571 and sink the attacking u-boat. Attempting to return, the U-571 has to escape the clutches of a German destroyer.
Captain Murrell of the USS Haynes, an American destroyer, goes head-on-head with a German U-boat commander in a South Atlantic dual.
Thomas Jericho is working on decrypting the current German Enigma code being used by the U-Boats in the Atlantic. At the same time he is trying to unveil a mystery surrounding an ex-lover believed to be a German spy. But all is not what it seems.