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HMS ''E30'' was a British E class submarine built by Armstrong Whitworth, Newcastle upon Tyne. She was laid down on 29 June 1914 and was commissioned in November 1915. HMS ''E30'' was mined off Orfordness, Suffolk in the North Sea on 22 December 1916. There were no survivors. ==Design== Like all post-''E8'' British E-class submarines, ''E30'' had a displacement of at the surface and while submerged. It had a total length of and a beam length of . It contained two diesel engines each providing a power of and two electric motors each providing power.〔(【引用サイトリンク】title=E Class )〕 Its complement was thirty-one crew members.〔 The submarine had a maximum surface speed of and a submerged speed of . British E-class submarines had fuel capacities of of diesel and ranges of when travelling at .〔 ''E30'' was capable of operating submerged for five hours when travelling at . It was fitted with a quick-firing gun gun (12 pounder), five torpedo tubes, and one spare torpedo tube. Its torpedo tubes were fitted at the front and the aft; unlike pre-''E9'' submarines, the two midship section torpedo tubes were not included.〔 E-Class submarines contained wireless systems with power ratings; in some submarines, these were later upgraded to systems by removing a midship torpedo tube. Its claimed highest dive depth was although it was capable of reaching depths of below . Some submarines contained Fessenden oscillator systems.〔 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「HMS E30」の詳細全文を読む スポンサード リンク
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