HMS L52
HMS "L52" was a late-model L-class submarine built for the Royal Navy during the First World War. The boat was not completed before the end of the war and was sold for scrap in 1935. Design and description. "L52" and its successors were modified to maximise the number of 21-inch (53.3 cm) torpedoes carried in the bow. The submarine had a length of overall, a beam of and a mean draft of . They displaced on the surface and submerged. The L-class submarines had a crew of 44 officers and ratings. They had a diving  depth of . For surface running, the boats were powered by two 12-cylinder Vickers diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the L class had a range of at . The boats were armed with six 21-inch torpedo tubes in the bow. They carried eight reload torpedoes for a grand total of a dozen torpedoes. They were also armed with two deck guns. Construction and career. HMS "L52" was laid down on 16 May 1917 by Armstrong Whitworth at  their Newcastle-Upon-Tyne shipyard, launched on 18 December 1918, and completed on 18 January 1921. The boat was sold for scrap in September 1935, but was wrecked off Barry, South Wales.