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SM ''UB-17'' was a German Type UB I submarine or U-boat in the German Imperial Navy ((ドイツ語:Kaiserliche Marine)) during World War I. The submarine disappeared during a patrol in March 1918. ''UB-17'' was ordered in November 1914 and was laid down at the AG Weser shipyard in Bremen in February 1915. ''UB-17'' was a little under in length and displaced between , depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. ''UB-17'' was broken into sections and shipped by rail to Antwerp for reassembly. She was launched in April 1915 and commissioned as SM ''UB-17'' in May.〔"SM" stands for "Seiner Majestät" ((英語:His Majesty's)) and combined with the ''U'' for ''Unterseeboot'' would be translated as ''His Majesty's Submarine''.〕 ''UB-17'' spent her entire career in the Flanders Flotilla and sank 13 ships, most of them British fishing vessels. She also captured two ships as prizes and damaged one tanker. On 11 March 1918, ''UB-17'' departed for a patrol in the Hoofden but was never seen again. There have been several suggestions as to ''UB-17''s fate, but none match the U-boat's operation details. In July 2013, ''UB-17'' was found off England's east coast, near the county of Suffolk by archaeologists.〔(【引用サイトリンク】url=http://www.spiegel.de/international/germany/british-archaeologists-explore-wwi-submarine-graveyard-off-uk-coast-a-911648.html )〕 == Design and construction == After the German Army's rapid advance along the North Sea coast in the earliest stages of World War I, the German Imperial Navy found itself without suitable submarines that could be operated in the narrow and shallow seas off Flanders.〔Miller, pp. 46–47.〕〔Karau, p. 48.〕 Project 34, a design effort begun in mid-August 1914,〔 produced the Type UB I design: a small submarine that could be shipped by rail to a port of operations and quickly assembled. Constrained by railroad size limitations, the UB I design called for a boat about long and displacing about with two torpedo tubes.〔〔A further refinement of the design—replacing the torpedo tubes with mine chutes but changing little else—evolved into the Type UC I coastal minelaying submarine. See: Miller, p. 458.〕 ''UB-17'' and sister boat comprised an order of two submarines ordered on 25 November from AG Weser of Bremen, a little more than three months after planning for the class began.〔〔Williamson, p. 12.〕 ''UB-17'' was laid down by Weser in Bremen on 21 February 1915.〔 As built, ''UB-17'' was long, abeam, and had a draft of . She had a single Körting 4-cylinder diesel engine for surface travel, and a single Siemens-Schuckert electric motor for underwater travel, both attached to a single propeller shaft. Her top speeds were , surfaced, and , submerged.〔 At more moderate speeds, she could sail up to on the surface before refueling, and up to submerged before recharging her batteries. Like all boats of the class, ''UB-17'' was rated to a diving depth of , and could completely submerge in 33 seconds. ''UB-17'' was armed with two torpedoes in two bow torpedo tubes. She was also outfitted for a single machine gun on deck. ''UB-17''s standard complement consisted of one officer and thirteen enlisted men.〔Karau, p. 49.〕 After work on ''UB-17'' was complete at the Weser yard, she was readied for rail shipment. The process of shipping a UB I boat involved breaking the submarine down into what was essentially a knock down kit. Each boat was broken into approximately fifteen pieces and loaded on to eight railway flatcars.〔 In early 1915, the sections of ''UB-17'' were shipped to Antwerp for assembly in what was typically a two- to three-week process. After ''UB-17'' was assembled and launched on 21 April,〔 she was loaded on a barge and taken through canals to Bruges where she underwent trials.〔 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 UB-17」の詳細全文を読む スポンサード リンク
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