HMS Poseidon

HMS Poseidon
History
United Kingdom
NameHMS Poseidon
BuilderVickers Shipbuilding and Engineering, Barrow-in-Furness
Laid down5 September 1928
Launched22 August 1929
Commissioned5 May 1930
FateSunk on 9 June 1931
General characteristics
Class & typeParthian-class submarine
Displacement
  • 1,475 long tons (1,499 t) surfaced
  • 2,040 long tons (2,070 t) submerged
Length260 ft (79 m)
Beam28 ft (8.5 m)
Draught13 ft 8 in (4.17 m)
Propulsion
  • Diesel-electric
  • 2 Admiralty diesel engines, 4,400 hp (3,300 kW)
  • 2 Electric motors, 1,530 hp (1,140 kW)
  • 2 shafts
Speed
  • 17.5 knots (20.1 mph; 32.4 km/h) surfaced
  • 9 kn (10 mph; 17 km/h) submerged
Range8,500 nmi (15,700 km) at 10 kn (12 mph; 19 km/h)
Complement59
Armament

HMS Poseidon (P99) was a Parthian-class submarine designed and built by Vickers Shipbuilding and Engineering in Barrow-in-Furness, England for the Royal Navy, launched on 22 August 1929. She spent most of her short career assigned to the Yellow Sea region, based at the Royal Navy's Weihai naval base in mainland China. In 1931, the submarine sank after a collision with the steamship Yuta north of Weihai. The submarine was later secretly salvaged by the Chinese in 1972.