HMS B2

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HMS B2.JPG
HMS B2
History
Naval Ensign of the United Kingdom.svg United Kingdom
NameHMS B2
Builder Vickers
Launched30 October 1905
Completed9 December 1905
FateLost, 4 October 1912
General characteristics
Class and type B-class submarine
Displacement
  • 287 long tons (292 t) surfaced
  • 316 long tons (321 t) submerged
Length142 ft 3 in (43.4 m)
Beam12 ft 7 in (3.8 m)
Draught11 ft 2 in (3.4 m)
Installed power
  • 600  bhp (450 kW) petrol
  • 180 hp (130 kW) electric
Propulsion
Speed
  • 12  kn (22 km/h; 14 mph) surfaced
  • 6.5 kn (12.0 km/h; 7.5 mph) submerged
Range1,000  nmi (1,900 km; 1,200 mi) at 8.7 kn (16.1 km/h; 10.0 mph) on the surface
Test depth100 feet (30.5 m)
Complement2 officers and 13 ratings
Armament2 × 18 in (450 mm) bow torpedo tubes

HMS B2 was one of 11 B-class submarines built for the Royal Navy in the first decade of the 20th century.

Contents

Design and description

The B class was an enlarged and improved version of the preceding A class. The submarines had a length of 142 feet 3 inches (43.4 m) overall, a beam of 12 feet 7 inches (3.8 m) and a mean draft of 11 feet 2 inches (3.4 m). They displaced 287 long tons (292 t) on the surface and 316 long tons (321 t) submerged. The B-class submarines had a crew of two officers and thirteen 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 180-horsepower (134 kW) electric motor. They could reach 12 knots (22 km/h; 14 mph) on the surface and 6.5 knots (12.0 km/h; 7.5 mph) underwater. [1] On the surface, the B class had a range of 1,000 nautical miles (1,900 km; 1,200 mi) at 8.7 knots (16.1 km/h; 10.0 mph). [2]

The boats were armed with two 18-inch (450 mm) 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

B2 was built by Vickers at their Barrow-in-Furness shipyard, launched on 30 October 1905 and completed on 9 December 1905. The boat was lost when she accidentally collided with SS Amerika 4 mi (6.4 km) northeast of Dover in the early hours of 4 October 1912. She was commanded by Lieutenant P.B. O’Brien and was one of several submarines sent to Dover to take part in Channel exercises during the extended lead up to the First World War. B2 was surfaced and was struck just forward of the conning tower. The accident resulted in the deaths of 15 crew members. The only survivor was the boat's bridge officer, Lt. Pulleyne. The boat was not recovered in order to allow the bodies to remain undisturbed. In recent years the wreck was discovered by amateur divers. [4]

Notes

  1. 1 2 Gardiner & Gray, p. 87
  2. ↑ Akermann, p. 123
  3. ↑ Harrison, Chapter 27
  4. ↑
    • McCartney, Innes (2002). Lost patrols : submarine wrecks of the English Channel. Penzance: Periscope. ISBN   978-1-90438-104-4.

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References

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