HMS Sovereign (S108)

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Career (UK) RN Ensign
Name: HMS Sovereign
Operator: Royal Navy
Ordered: 16 March 1969
Builder: Vickers
Laid down: 18 September 1970
Launched: 17 February 1973
Commissioned: 11 July 1974
Decommissioned: 12 September 2006
Fate: Paid off
General characteristics
Class and type: Swiftsure-class submarine
Displacement: 4,900 tonnes (dived)
Length: 82.9 metres (272 ft 0 in)
Beam: 9.8 metres (32 ft 2 in)
Draught: 8.5 metres (27 ft 11 in)
Speed: In excess of 20 knots (37 km/h), dived
Complement: 116 officers and men
Armament: 5 × 21 in (533 mm) torpedo tubes
Spearfish torpedoes
RN Sub Harpoon missiles
Tomahawk cruise missiles

The HMS Sovereign (S108) is a nuclear powered fleet submarine of the Swiftsure class. Construction of the boat was begun on the 18th of September 1970 and she was launched on 17th February 1973 and commissioned on 11th July 1974. In 1976 HMS Sovereign played a role in Operation Brisk; the submarine surfaced at the geographical North Pole on 20th October 1976 as part of the exercise, testing navigational systems and equipment performance in low temperatures.

Sovereign underwent an extensive refit in the mid 1990s and was rededicated in January 1997. Cracks were discovered in the tail shaft during post refit sea trials and she was sent to Rosyth for 14 weeks of emergency repairs in June 1998 before returning to Faslane.

Sovereign was used for the perisher submarine command course in June of 1999 as well as other training cruises. She was part of the NATO exercise Linked Seas in May 2000, operating in the Bay of Biscay.

In the early 2000s Sovereign was out of service for some time due to reactor problems, a fault she shared in common with others of her class. Although she was back in full service by July 2005, the submarine was decommissioned as of September 2006.

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