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]

History
United Kingdom
NameHMS Achates (P433)
Laid down8 March 1944
Launched20 September 1945
FateExpended as a target June 1950
General characteristics if completed
Class and typeAmphion-class submarine
Displacement1,360/1,590 tons (surface/submerged)
Length293 ft 6 in (89.46 m)
Beam22 ft 4 in (6.81 m)
Draught18 ft 1 in (5.51 m)
Propulsion2 × 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 depth350 ft (110 m)
Complement60
Armament

References

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Bibliography

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  • 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.