HMS L9
 HMS L9
| |
| History | |
|---|---|
 United Kingdom | |
| Name | HMS L9 |
| Builder | William Denny and Brothers, Dumbarton |
| Laid down | October 1916 |
| Launched | 29 January 1918 |
| Commissioned | 27 May 1918 |
| Fate | Sold for scrapping, 30 June 1927 |
| General characteristics | |
| Class and type | L-class submarine |
| Displacement |
|
| Length | 238 ft 7 in (72.7 m) |
| Beam | 23 ft 6 in (7.2 m) |
| Draught | 13 ft 3 in (4.0 m) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range | 3,800 nmi (7,000 km; 4,400 mi) at 10 kn (19 km/h; 12 mph) on the surface |
| Test depth | 150 feet (45.7 m) |
| Complement | 38 |
| Armament |
|
HMS L9 was an
L-class submarine built for the Royal Navy during World War I. The boat survived the war and was sold for scrap
in 1927.
Design and description
L9 and its successors were enlarged to accommodate
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
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
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]
Construction and career
HMS L9 was
Submarine Depot Ship HMS Ambrose (1903) to Hong Kong in 1919 as part of the 4th Submarine Flotilla. The boat was sunk during a typhoon in Hong Kong
harbour on 18 August 1923. She was salvaged on 6 September 1923 and then recommissioned. L9 was sold in Hong Kong on 30 June 1927.
Notes
References
- Akermann, Paul (2002). Encyclopaedia of British Submarines 1901–1955 (reprint of the 1989 ed.). Penzance, Cornwall: Periscope Publishing. ISBN 1-904381-05-7.
- ISBN 978-1-86176-281-8.
- Gardiner, Robert & 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.
 Royal Navy |
| ||||||
|---|---|---|---|---|---|---|---|
 Soviet Navy |
| ||||||
| |||||||
Shipwrecks and maritime incidents in 1923 | |
|---|---|
| Shipwrecks |
|
| Other incidents |
|
