HMS H42

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HMS H42 was a British H class submarine that sank with the loss of all 24 of its crew after an accidental collision in 1922.[1] The sub was built by Armstrong Whitworth, Newcastle Upon Tyne. She was laid down in September 1917 and was commissioned on 1 May 1919.

On 23 March 1922, under the command of Royal Navy Lieutenant Douglas Staley, H42 was practising torpedo attacks against British destroyers steaming off Europa Point, Gibraltar,[2] when she surfaced unexpectedly only 30 [3] or 120[4] yards (27 or 110 metres) – sources differ – ahead of the destroyer Script error: No such module "WPSHIPS utilities".. Versatile, making 20 knots, went to full speed astern on her engines and put her helm over hard to port, but had not yet begun to answer her helm when she rammed H42 abaft the conning tower, almost slicing the submarine in half. H42 sank with the loss of all hands. An investigation found H42 at fault for surfacing where she did against instructions.[4][5]

Design

Like all post-H20 British H-class submarines, H42 had a displacement of Script error: No such module "convert". at the surface and Script error: No such module "convert". while submerged.[6] It had a total length of Script error: No such module "convert".,[7] a beam of Script error: No such module "convert"., and a draught of Script error: No such module "convert"..[8] It contained a diesel engines providing a total power of Script error: No such module "convert". and two electric motors each providing Script error: No such module "convert". power.[8] The use of its electric motors made the submarine travel at Script error: No such module "convert".. It would normally carry Script error: No such module "convert". of fuel and had a maximum capacity of Script error: No such module "convert"..[9]

The submarine had a maximum surface speed of Script error: No such module "convert". and a submerged speed of Script error: No such module "convert".. Post-H20 British H-class submarines had ranges of Script error: No such module "convert". at speeds of Script error: No such module "convert". when surfaced.[6][8] H42 was fitted with an anti-aircraft gun and four Script error: No such module "convert". torpedo tubes. Its torpedo tubes were fitted to the bows and the submarine was loaded with eight Script error: No such module "convert". torpedoes.[6] It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members.[6]

References

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  1. ↑ "Submersible Sunk; 24 Lost— British H-42 Rammed by Destroyer Versatile During Maneuvers", The Washington Post, March 24, 1922, p. 1
  2. ↑ Navy Net: Remembrance Sunday: H42 is Still On Patrol
  3. ↑ "Struck at Right Angles— H 42 Rises 30 Yards Ahead of Destroyer", The Manchester Guardian, March 24, 1922, p. 9; Eyres Monsell, the Lord of the Admiralty, read a telegram to the House of Commons that was received from the Gibraltar command saying "The only further details yet known are as follows: H 42 came to the surface thirty or forty yards ahead of Versatile, which was steaming twenty knots and rammed the submarine about the conning tower at right angles." It is possible that the speculation on modern websites of "120 yards" is based on a misinterpretation of 120 feet (or 40 yards).
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ Richardson and Hurd 1923, p.31.
  6. ↑ a b c d Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ a b c Script error: No such module "template wrapper". Retrieved from Naval-History on 20 August 2015.
  9. ↑ Script error: No such module "citation/CS1".

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Bibliography

  • Script error: No such module "citation/CS1".
  • Richardson, Alexander and Archibald Hurd. (editors). Brassey's Naval and Shipping Annual 1923. London, William Clowes, 1923.

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