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Type U 31 was a class of U-boats built during World War I by the Kaiserliche Marine. Between 1912 and 1915 eleven were built on Germaniawerft in Kiel , amongst these top-three-scoring U-35 with the famous Lothar von Arnauld de la Perière as commander, U-39 with Walter Forstmann and U-38 with Max Valentiner .
The Type UB I submarine (sometimes known as the UB-1 class [1]) 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 ...
U-995, a typical VIIC/41 U-boat on display at the Laboe Naval Memorial. 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 ⓘ, a shortening of Unterseeboot (under-sea boat), though the German term refers to any submarine.
Type 81 U-boats carried 12 torpedoes and had various arrangements of deck guns. U 81 to U 83 had one 10.5-centimetre (4.1 in) deck gun with 140-240 rounds. U 84 - U 86 were constructed with two 8.8-centimetre (3.5 in) deck guns. In 1917, U 84 - U 86 were converted to a carry one 10.5 cm and one 8.8 cm deck gun [2] and carried 240 rounds.
More than 200 UB III boats were ordered. Of these, 96 were completed, and 89 commissioned into the German Imperial Navy. Thirty-seven boats were lost, four in accidents. [4] Surviving boats had to be surrendered to the Allies in accordance with the requirements of the Armistice with Germany, some of these boats served until 1935. [1]
Three submarines of this type, U-139, U-140, and U-141, were ordered. [2] The later "Project 46(a)" specified even more powerful U-cruisers, of a similar displacement to the Type 139 boats, but with an increased surface speed of 18 knots (33 km/h; 21 mph), and with two 88 mm deck guns in addition to the two 150 mm guns. [1]
Room 40: Archived 15 October 2018 at the Wayback Machine original documents, photos and maps about World War I German submarine warfare and British Room 40 Intelligence from The National Archives, Kew, Richmond, UK. Helgason, Guðmundur. "WWI U-boats: U 9". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net
On 16 December 1916, four under construction in the Reiherstieg and Flensburger Schiffbau yards were taken over by the navy and converted to military specification as Type U 151 U-boats, being designated U-151 to U-154. The remaining two, along with Deutschland, which became U-155, passed into naval control in February 1917, as U-156 and U-157. [2]