HMS L11 was a L-class submarine built for the Royal Navy during World War I. She was one of five boats in the class to be fitted as a minelayer. The boat survived the war and was sold for scrap in 1932.
L9 and its successors were enlarged to accommodate 21-inch (53.3 cm) torpedoes and more fuel. The submarine had a length of 238 feet 7 inches (72.7 m) overall, a beam of 23 feet 6 inches (7.2 m) and a mean draft of 13 feet 3 inches (4.0 m).[1] They displaced 914 long tons (929 t) on the surface and 1,089 long tons (1,106 t) submerged. The L-class submarines had a crew of 38 officers and ratings.[2]
For surface running, the boats were powered by two 12-cylinder Vickers[3] 1,200-brake-horsepower (895 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 600-horsepower (447 kW) electric motor.[1] They could reach 17 knots (31 km/h; 20 mph) on the surface and 10.5 knots (19.4 km/h; 12.1 mph) underwater. On the surface, the L class had a range of 3,800 nautical miles (7,000 km; 4,400 mi) at 10 knots (19 km/h; 12 mph).[4]
The boats were armed with four 21-inch torpedo tubes in the bow and two 18-inch (45 cm) in broadside mounts. They carried four reload torpedoes for the 21-inch tubes for a grand total of ten torpedoes of all sizes.[5] They were also armed with a 4-inch (102 mm) deck gun.[2]L11 was fitted with 16 vertical mine chutes in her saddle tanks and carried one mine per chute.[1]
Construction and careeredit
L11 was built by Vickers, Barrow. She was laid down on 17 January 1917 and was commissioned on 27 June 1918. The boat was sold for scrap in February 1932.
Akermann, Paul (2002). Encyclopaedia of British Submarines 1901–1955 (reprint of the 1989 ed.). Penzance, Cornwall: Periscope Publishing. ISBN1-904381-05-7.
Gardiner, Robert & Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN0-85177-245-5.
Harrison, A. N. (January 1979). "The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)". RN Subs. Retrieved 27 September 2022.
April 08, 2024
class, submarine, built, royal, navy, during, world, five, boats, class, fitted, minelayer, boat, survived, sold, scrap, 1932, historyunited, kingdomnamebuildervickers, limited, barrow, furnesslaid, down17, january, 1917launched26, february, 1918commissioned27. HMS L11 was a L class submarine built for the Royal Navy during World War I She was one of five boats in the class to be fitted as a minelayer The boat survived the war and was sold for scrap in 1932 HistoryUnited KingdomNameHMS L11BuilderVickers Limited Barrow in FurnessLaid down17 January 1917Launched26 February 1918Commissioned27 June 1918FateSold for scrapping February 1932General characteristicsClass and typeL class submarineDisplacement914 long tons 929 t surfaced 1 089 long tons 1 106 t submergedLength238 ft 7 in 72 7 m Beam23 ft 6 in 7 2 m Draught13 ft 3 in 4 0 m Installed power2 400 bhp 1 800 kW diesel 1 600 hp 1 200 kW electric Propulsion2 diesel engines 2 electric motorsSpeed17 kn 31 km h 20 mph surfaced 10 5 kn 19 4 km h 12 1 mph submergedRange3 800 nmi 7 000 km 4 400 mi at 10 kn 19 km h 12 mph on the surfaceTest depth150 feet 45 7 m Complement38Armament4 bow 21 in 533 mm torpedo tubes 2 beam 18 in 457 mm torpedo tubes 1 4 inch deck gun 16 mines Contents 1 Design and description 2 Construction and career 3 Notes 4 ReferencesDesign and description editL9 and its successors were enlarged to accommodate 21 inch 53 3 cm torpedoes and more fuel The submarine had a length of 238 feet 7 inches 72 7 m overall a beam of 23 feet 6 inches 7 2 m and a mean draft of 13 feet 3 inches 4 0 m 1 They displaced 914 long tons 929 t on the surface and 1 089 long tons 1 106 t submerged The L class submarines had a crew of 38 officers and ratings 2 For surface running the boats were powered by two 12 cylinder Vickers 3 1 200 brake horsepower 895 kW diesel engines each driving one propeller shaft When submerged each propeller was driven by a 600 horsepower 447 kW electric motor 1 They could reach 17 knots 31 km h 20 mph on the surface and 10 5 knots 19 4 km h 12 1 mph underwater On the surface the L class had a range of 3 800 nautical miles 7 000 km 4 400 mi at 10 knots 19 km h 12 mph 4 The boats were armed with four 21 inch torpedo tubes in the bow and two 18 inch 45 cm in broadside mounts They carried four reload torpedoes for the 21 inch tubes for a grand total of ten torpedoes of all sizes 5 They were also armed with a 4 inch 102 mm deck gun 2 L11 was fitted with 16 vertical mine chutes in her saddle tanks and carried one mine per chute 1 Construction and career editL11 was built by Vickers Barrow She was laid down on 17 January 1917 and was commissioned on 27 June 1918 The boat was sold for scrap in February 1932 Notes edit a b c Gardiner amp Gray p 93 a b Akermann p 165 Harrison Chapter 25 Harrison Chapters 3 Harrison Chapter 27References editAkermann Paul 2002 Encyclopaedia of British Submarines 1901 1955 reprint of the 1989 ed Penzance Cornwall Periscope Publishing ISBN 1 904381 05 7 Colledge J J Warlow Ben 2006 1969 Ships of the Royal Navy The Complete Record of all Fighting Ships of the Royal Navy Rev ed London Chatham Publishing ISBN 978 1 86176 281 8 Gardiner Robert amp Gray Randal eds 1985 Conway s All the World s Fighting Ships 1906 1921 Annapolis Maryland Naval Institute Press ISBN 0 85177 245 5 Harrison A N January 1979 The Development of HM Submarines From Holland No 1 1901 to Porpoise 1930 BR3043 RN Subs Retrieved 27 September 2022 Retrieved from https en wikipedia org w index php title HMS L11 amp oldid 1134785109, wikipedia, wiki, book, books, library,
