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U-boat. U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. The term is an anglicized version of the German word U-Boot [ˈuːboːt] ⓘ, a shortening of Unterseeboot (under-sea boat), though the German term refers to any submarine. Austro-Hungarian Navy submarines were also known as U-boats.
The U-boat campaign from 1914 to 1918 was the World War I naval campaign fought by German U-boats against the trade routes of the Allies. It took place largely in the seas around the British Isles and in the Mediterranean. The German Empire relied on imports for food and domestic food production (especially fertilizer) and the United Kingdom ...
There were some 380 U-boats commissioned into the Kaiserliche Marine in the years before and during World War I. Although the first four German U-boats— U-1, U-2, U-3, and U-4 —were commissioned before 1910, all four served in a training capacity during the war. German U-boats used during World War I were divided into three series.
The Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atlantic waters—the seas around the British Isles, the North Sea and the coast of France.
10 Top-scoring U-boats of World War II. Scuttled, 17 March 1941 after depth charging by HMS Walker. Decommissioned March 1944. Sunk by bombs in Kiel, 15 April 1945. Lost with all hands, 2 April 1943 after depth charging by HMS Stonecrop and HMS Black Swan. Decommissioned 17 June 1944. Scuttled in port, 19 August 1944.
The Type UB I submarine (sometimes known as the UB-1 class [5]) was a class of small coastal submarines built in Germany at the beginning of the First World War.Twenty boats were constructed, most of which went into service with the German Imperial Navy (Kaiserliche Marine) Boats of this design were also operated by the Austro-Hungarian Navy (Kaiserliche und Königliche Kriegsmarine or K.u.K ...
1 merchant ship damaged. (2,246 GRT) 1 warship damaged. (397 tons) SM U-20[Note 1] was a German Type U 19 U-boat built for service in the Imperial German Navy. She was launched on 18 December 1912, and commissioned on 5 August 1913. During World War I, she took part in operations around the British Isles.
24 November 1917 – 30 April 1918. Operations: 2 patrols. Victories: None. SM UB-85[Note 1] was a Type UB III U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. Ordered on 23 September 1916, the U-boat was built at the AG Weser shipyard in Bremen and commissioned on 24 November 1917, under the command of ...