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SM ''U-84'' was one of the 329 submarines serving in the Imperial German Navy (Kaiserliche Marine) in World War I. ''U-84'' was engaged in the naval warfare and took part in the First Battle of the Atlantic.〔 Initially ''U-81'' to ''U-83'' had one 10.5 cm gun with 140-240 rounds. ''U-84'' - ''U-86'' on the other hand had two 8.8 cm guns. In 1917 ''U-84'' - ''U-86'' were refitted with a single 10.5 cm gun (240 rounds)〔 ==Design== German Type U 81 submarines were preceded by the shorter Type UE I submarines. ''U-84'' had a displacement of when at the surface and while submerged. It had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two engines for use while surfaced, and two engines for use while submerged. It had two propeller shafts. It was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, it could operate for at ; when surfaced, it could travel at . ''U-84'' was fitted with six torpedo tubes (one at the starboard bow and one starboard stern), twelve to sixteen torpedoes, and one deck machine gun. It had a complement of thirty-five (thirty-one crew members and four officers). 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-84」の詳細全文を読む スポンサード リンク
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