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SM ''U-3'' or ''U-III'' was the lead boat of the ''U-3'' class of submarines or U-boats built for and operated by the Austro-Hungarian Navy ((ドイツ語:Kaiserliche und Königliche Kriegsmarine ''or'' K.u.K. Kriegsmarine)) before and during the First World War. The submarine was built as part of a plan to evaluate foreign submarine designs, and was built by Germaniawerft of Kiel, Germany. ''U-3'' was authorized in 1906, begun in March 1907, launched in August 1908, and towed from Kiel to Pola in January 1909. The double-hulled submarine was just under long and displaced between , depending on whether surfaced or submerged. The design of the submarine had poor diving qualities and several modifications to ''U-3''s diving planes and fins occurred in her first years in the Austro-Hungarian Navy. Her armament, as built, consisted of two bow torpedo tubes with a supply of three torpedoes, but was supplemented with a deck gun in 1915. The boat was commissioned into the Austro-Hungarian Navy in September 1909, and served as a training boat—sometimes making as many as ten cruises a month—through the beginning of the First World War in 1914. At the start of that conflict, she was one of only four operational submarines in the Austro-Hungarian Navy U-boat fleet. Over the first year of the war, ''U-3'' conducted reconnaissance cruises out of Cattaro. On 12 August 1915, ''U-3'' was damaged after an unsuccessful torpedo attack on an Italian armed merchant cruiser and, after she surfaced the next day, was sunk by a French destroyer. ''U-3''s commanding officer and 6 men died in the attack; the 14 survivors were captured. == Design and construction == ''U-3'' was built as part of a plan by the Austro-Hungarian Navy to competitively evaluate foreign submarine designs from Simon Lake, Germaniawerft, and John Philip Holland.〔Gardiner, p. 340.〕 The Austro-Hungarian Navy authorized the construction of ''U-3'' (and sister ship, ''U-4'') in 1906 by Germaniawerft of Kiel, Germany.〔 ''U-3'' was laid down on 12 March 1907 and launched on 20 August 1908.〔〔In their book ''The German Submarine War, 1914–1918'', R. H. Gibson and Maurice Prendergast report that ''U-3'' was launched in 1909 (p. 384).〕 After completion, she was towed via Gibraltar to Pola,〔 where she arrived on 24 January 1909.〔 ''U-3''s design was an improved version of Germaniawerft's design for the Imperial German Navy's first U-boat, ,〔 and featured a double hull with internal saddle tanks. The Germaniawerft engineers refined the design's hull shape through extensive model trials.〔 ''U-3'' was long by abeam and had a draft of .〔 She displaced surfaced and submerged.〔 She was armed with two bow torpedo tubes, and was designed to carry up to three torpedoes.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SM U-3 (Austria-Hungary)」の詳細全文を読む スポンサード リンク
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