HMS Sealion (S07)

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Hms sealion s07.jpg
HMS Sealion (S07)
History
Naval Ensign of the United Kingdom.svgUnited Kingdom
NameHMS Sealion (S07)
Namesake Sealion
Builder Cammell Laird
Laid down5 June 1958 [1]
Launched31 December 1959
Commissioned25 July 1961
DecommissionedDecember 1987
FateScrapped 1990
General characteristics
Class and type Porpoise-class submarine
Displacement2,080 tons (2,113 tonnes) surfaced, 2,450 tons (2,489 tonnes) dived
Length88.4 m (290 ft)
Beam8.1 m (26.5 ft)
Draught5.5 m (18 ft)
PropulsionTwo ASR 16VVS AS21 diesel generators totalling 3680 bhp (2,740 kW), two English Electric main motors totalling 12000 hp (895 kW) driving two shafts, two 880 V batteries each of 224 cells
Speed12 knots (22 km/h) surfaced, 17 knots (31 km/h) dived
Complement64 officers and men
Armament6 x 21 inch (533 mm) bow torpedo tubes, 2 x 21 inch (533 mm) stern torpedo tubes; 30 torpedoes could be carried (usually Mk8 or Mk23) or mines

HMS Sealion (S07) was a Porpoise-class submarine.

Design and construction

The Porpoise class was the first class of operational submarines built for the Royal Navy after the end of the Second World War, and were designed to take advantage of experience gained by studying German Type XXI U-boats and British wartime experiments with the submarine Seraph, which was modified by streamlining and fitting a bigger battery. [2] [3] [4]

Contents

The Porpoise-class submarines were 290 feet 3 inches (88.47 m) long overall and 241 feet 0 inches (73.46 m) between perpendiculars, with a beam of 26 feet 6 inches (8.08 m) and a draught of 18 feet 3 inches (5.56 m). Displacement was 1,565 long tons (1,590 t) standard and 1,975 long tons (2,007 t) full load surfaced and 2,303 long tons (2,340 t) submerged. [2] Propulsion machinery consisted of two Admiralty Standard Range diesel generators rated at a total of 3,680 brake horsepower (2,740 kW), which could charge the submarine's batteries or directly drive the electric motors. These were rated at 6,000 shaft horsepower (4,500 kW), and drove two shafts, giving a speed of 12 knots (14 mph; 22 km/h) on the surface and 16 knots (18 mph; 30 km/h) submerged. [5] [4] Eight 21-inch (533 mm) torpedo tubes were fitted; six in the bow, and two in the stern. Up to 30 torpedoes could be carried, with the initial outfit consisting of the unguided Mark 8 and the homing Mark 20 torpedoes. [2]

Sealion was laid down on 5 June 1958 by Cammell Laird at their Birkenhead shipyard. She was launched on 31 December 1959, and completed on 25 July 1961, being assigned the Pennant number S 07. [5]

Service

In 1963 Sealion was carrying out surveillance operations against a Soviet naval exercise when she was detected by Soviet warships and forced to surface. [6] Between 1976 and 1977 she was commanded by J K Boyle. Sealion attended the 1977 Silver Jubilee Fleet Review off Spithead when she was part of the Submarine Flotilla. [7]

In late 1986–1987 Sealion was deployed to the South Atlantic, carrying out patrols from the Falkland Islands before visiting Chile and returning to Britain via the Caribbean. [8] Upon her return, Sealion returned flying a Jolly Roger, a traditional act of Royal Navy submarines after a kill, suggesting that she was involved in a special forces related operation. [9] She was paid off in December 1987 and sold to an Education Trust for deprived inner-city youngsters "Inter Action", arriving at Chatham on 22 June 1988.

She was broken up in 1990.

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References

  1. ↑ Submariners.co.uk
  2. 1 2 3 Gardiner & Chumbley 1995 , p. 529
  3. ↑ Brown 2012 , p. 116
  4. 1 2 Brown & Moore 2012 , p. 114
  5. 1 2 Blackman 1971 , p. 339
  6. ↑ Hennessy & Jinks 2016 , p. 277
  7. ↑ Official Souvenir Programme, 1977. Silver Jubilee Fleet Review, HMSO
  8. ↑ "Sealion ends her odyssey". Navy News . March 1987. p. 8. Retrieved 19 January 2019.
  9. ↑ Hennessy, Peter (2016). The silent deep : the Royal Navy Submarine Service since 1945. p. 455. ISBN   978-0-241-95948-0. OCLC   951120576.

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