HMS L27

L9 and its successors were enlarged to accommodate 21-inch (53.3 cm) torpedoes and more fuel. 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 35 officers and ratings. They had a diving depth of . diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. The boats were armed with four torpedo tubes in the bow and two tubes in broadside mounts. They carried four reload torpedoes for the 21-inch tubes for a grand total of ten torpedoes of all sizes. They were also armed with a deck gun. ==Construction and career==

HMS L27 was built by Vickers at their Barrow-in-Furness shipyard, launched on 14 June 1919. She was then towed and completed at HM Dockyard, Sheerness and commissioned on 25 March 1926. At the onset of the Second World War, L27 was a member of the 6th Submarine Flotilla. From 26–29 August 1939, the flotilla deployed to its war bases at Dundee and Blyth. From 20 September 1939 to 15 January 1940, the 6th Submarine Flotilla was deployed off Skagerrak, Jutland and Horns Reef. On 15 October 1940 L27 attacked a German convoy unsuccessfully in the English Channel. Beginning on 22 March 1941, the Royal Navy and Allies began deploying submarines off Brest, France to prevent the German battleships and from leaving port. L27 was among the submarines assigned to the patrol. On 15 October 1941, the submarine unsuccessfully attacked a merchant vessel off Cherbourg. L27 was converted into a training boat at Portsmouth before being broken up at Montreal from July 1946. ==Notes==