HMS C12

HMS C38 - a typical C class submarine
History
United Kingdom
Name:	HMS C12
Builder:	Vickers, Barrow
Laid down:	27 November 1906
Launched:	9 September 1907
Commissioned:	19 January 1908
Fate:	Sold for Scrap 2 February, 1920
General characteristics
Class and type:	C-class submarine
Displacement:	287 long tons (292 t) surfaced 316 long tons (321 t) submerged
Length:	142 ft 3 in (43.4 m)
Beam:	13 ft 7 in (4.1 m)
Draught:	11 ft 6 in (3.5 m)
Installed power:	600 bhp (450 kW) petrol 300 hp (220 kW) electric
Propulsion:	1 × 16-cylinder Vickers petrol engine 1 × electric motor
Speed:	12 kn (22 km/h; 14 mph) surfaced 7 kn (13 km/h; 8.1 mph) submerged
Range:	910 nmi (1,690 km; 1,050 mi) at 12 kn (22 km/h; 14 mph) on the surface
Test depth:	100 feet (30.5 m)
Complement:	2 officers and 14 ratings
Armament:	2 × 18 in (450 mm) bow torpedo tubes

HMS C12 was one of 38 C-class submarines built for the Royal Navy in the first decade of the 20th century. The boat survived the First World War and was sold for scrap in 1920.

Design and description

The C class was essentially a repeat of the preceding B class, albeit with better performance underwater. The submarine had a length of 142 feet 3 inches (43.4 m) overall, a beam of 13 feet 7 inches (4.1 m) and a mean draft of 11 feet 6 inches (3.5 m). They displaced 287 long tons (292 t) on the surface and 316 long tons (321 t) submerged. The C-class submarines had a crew of two officers and fourteen ratings.^[1]

For surface running, the boats were powered by a single 16-cylinder 600-brake-horsepower (447 kW) Vickers petrol engine that drove one propeller shaft. When submerged the propeller was driven by a 300-horsepower (224 kW) electric motor.^[1] They could reach 12 knots (22 km/h; 14 mph) on the surface and 7 knots (13 km/h; 8.1 mph) underwater. On the surface, the C class had a range of 910 nautical miles (1,690 km; 1,050 mi) at 12 knots (22 km/h; 14 mph).^[2]

The boats were armed with two 18-inch (45 cm) torpedo tubes in the bow. They could carry a pair of reload torpedoes, but generally did not as they would have to remove an equal weight of fuel in compensation.^[3]

Construction and career

C12 was built by Vickers at their Barrow-in-Furness shipyard, laid down on 27 November 1906 and was commissioned on 19 January 1908. The boat was sunk in a collision with a destroyer in the Humber Estuary on 6 October 1918. She was salvaged and recommissioned. C12 was sold for scrap on 2 February 1920.

Notes

1. Gardiner & Gray, p. 87
2. Harrison, Chapter 3
3. Harrison, Chapter 27

References

• Akermann, 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. OCLC 67375475.
• Gardiner, Robert & Gray, Randal, eds. (1984). 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)". Submariners Association: Barrow in Furness Branch. Retrieved 19 August 2015.

External links

• MaritimeQuest HMS C12 page