{
  "id": "enwiki-001375840033",
  "slug": "hms-e42",
  "title": "HMS E42",
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  "lead": "HMS E42 was a British E-class submarine built by Cammell Laird, Birkenhead. She was launched on 22 October 1915 and commissioned in July 1916. She served during the First World War, hitting with a torpedo the battlecruiser on 25 April 1918 and making an unsuccessful attack on U-92 on 1 July 1918. E42 was sold for scrap at Poole on 6 September 1922.",
  "body": "HMS E42 was a British E-class submarine built by Cammell Laird, Birkenhead. She was launched on 22 October 1915 and commissioned in July 1916. She served during the First World War, hitting with a torpedo the battlecruiser on 25 April 1918 and making an unsuccessful attack on U-92 on 1 July 1918. E42 was sold for scrap at Poole on 6 September 1922. ==Design== Like all post-E8 British E-class submarines, E42 had a displacement of at the surface and while submerged. She had a total length of and a beam of . She was powered by two Vickers eight-cylinder two-stroke diesel engines and two electric motors. 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 . E42 was capable of operating submerged for five hours when travelling at . E42 was armed with a 12-pounder QF gun mounted forward of the conning tower. She had five 18-inch (450 mm) torpedo tubes, two in the bow, one either side amidships, and one in the stern; a total of 10 torpedoes were carried. E-Class submarines had wireless systems with power ratings; in some submarines, these were later upgraded to systems by removing a midship torpedo tube. Their maximum design depth was although in service some reached depths of below . Some submarines contained Fessenden oscillator systems. ==Notes==",
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    "title": "HMS E42",
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    "container-title": "encyclopegia.org",
    "publisher": "Anticloud FZ LLE",
    "publisher-place": "Dubai, United Arab Emirates",
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          2026,
          11,
          15
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    "DOI": "eo1:enwiki-001375840033",
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