HMS Achates (P433)

HMS Achates was a planned Amphion-class submarine of the Royal Navy, launched in 1945 but not completed and expended as a target off Gibraltar in June 1950.[1]

For other ships with the same name, see HMS Achates.
History
United Kingdom
Name: HMS Achates (P433)
Laid down: 8 March 1944
Launched: 20 September 1945
Fate: Expended as a target
General characteristics if completed
Class and type: Amphion-class submarine
Displacement: 1,360/1,590 tons (surface/submerged)
Length: 293 ft 6 in (89.46 m)
Beam: 22 ft 4 in (6.81 m)
Draught: 18 ft 1 in (5.51 m)
Propulsion: 2 × 2,150 hp (1,600 kW) Admiralty ML 8-cylinder diesel engine, 2 × 625 hp (466 kW) electric motors for submergence driving two shafts
Speed:
  • 18.5 kn (34.3 km/h) surface, 8 kn (15 km/h) submerged
  • 10,500 nmi (19,400 km) at 11 kn (20 km/h) surfaced
  • 16 nmi (30 km) at 8 kn (15 km/h) or 90 nmi (170 km) at 3 kn (5.6 km/h) submerged
Test depth: 350 ft (110 m)
Complement: 5 officers 55 enlisted
Armament:
  • 6 × 21 inch (533 mm) (2 external) bow torpedo tubes, 4 × 21 in (2 external) stern torpedo tubes, containing a total of 20 torpedoes
  • Mines: 26
  • 1 × 4 in (102 mm) main deck gun, 3 × 0.303 machine gun, 1 × 20 mm AA Oerlikon 20 mm gun

References
  1. Colledge & Warlow 2006, p. 20.

Bibliography
  • 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.
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