HMS L6 and L8 by Francis Dodd
|Builder:||Cammell Laird, Birkenhead|
|Laid down:||28 May 1916|
|Commissioned:||12 March 1918|
|Fate:||Sold for scrapping, 7 October 1930|
|Class and type:||L-class submarine|
|Length:||231 ft 1 in (70.4 m)|
|Beam:||23 ft 6 in (7.2 m)|
|Draught:||13 ft 3 in (4.0 m)|
|Range:||3,800 nmi (7,000 km; 4,400 mi) at 10 kn (19 km/h; 12 mph) on the surface|
|Test depth:||100 feet (30.5 m)|
The L-class boats were enlarged and improved versions of the preceding E class. The submarine had a length of 231 feet 1 inch (70.4 m) overall, a beam of 23 feet 6 inches (7.2 m) and a mean draft of 13 feet 3 inches (4.0 m). They displaced 891 long tons (905 t) on the surface and 1,074 long tons (1,091 t) submerged. The L-class submarines had a crew of 35 officers and ratings.
For surface running, the boats were powered by two 12-cylinder Vickers 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. 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 3,200 nautical miles (5,900 km; 3,700 mi) at 10 knots (19 km/h; 12 mph).
The boats were armed with a total of six 18-inch (45 cm) torpedo tubes. Four of these were in the bow and the remaining pair in broadside mounts. They carried 10 reload torpedoes, all for the bow tubes. They were also armed with a 4-inch (102 mm) deck gun.
HMS L8 was built by Cammell Laird, Birkenhead. She was laid down on 28 May 1916 and was commissioned on 12 March 1918. She was based at Falmouth, Cornwall in 1918. L8 was assigned to the 4th Submarine Flotilla and HMS Titania in 1919 and sailed to Hong Kong, arriving on 14 April 1920. She was then assigned in the Reserve Flotilla in Hong Kong. She was sold on 7 October 1930 to John Cashmore Ltd for scrapping at Newport, Monmouthshire.