HMS C18

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William Lionel Wyllie - The submarine H.M.S. C18 on patrol.jpg
C18 on patrol, painting by William Lionel Wyllie
History
Naval Ensign of the United Kingdom.svgUnited Kingdom
NameC18
Builder Royal Dockyard, Chatham
Laid down11 March 1907
Launched10 October 1908
Commissioned23 July 1909
FateSold on 26 May 1921
General characteristics
Class and type C-class submarine
Displacement
  • 287 long tons (292 t) surfaced
  • 316 long tons (321 t) submerged
Length142 ft 3 in (43.4 m)
Beam13 ft 7 in (4.1 m)
Draught11 ft 6 in (3.5 m)
Installed power
  • 600  bhp (450 kW) petrol
  • 300 hp (220 kW) electric
Propulsion
Speed
  • 12  kn (22 km/h; 14 mph) surfaced
  • 7 kn (13 km/h; 8.1 mph) submerged
Range910  nmi (1,690 km; 1,050 mi) at 12 kn (22 km/h; 14 mph) on the surface
Test depth100 feet (30.5 m)
Complement2 officers and 14 ratings
Armament2 × 18 in (450 mm) bow torpedo tubes

HMS C18 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 1921.

Contents

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

C18 was laid down on 11 March 1907 at the Royal Dockyard, Chatham, launched on 10 October 1908, and completed on 23 July 1909. [4] During World War I, the boat was generally used for coastal defence and training in home waters. HMS C18 was sold for scrap on 26 May 1921 in Sunderland.

Notes

  1. 1 2 Gardiner & Gray, p. 87
  2. ↑ Harrison, Chapter 3
  3. ↑ Harrison, Chapter 27
  4. ↑ Harrison, Appendix 1, p. App. I.3

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References

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