HMS Sovereign (S108)

For other ships of the same name, see Sovereign of the Seas and HMS Royal Sovereign.
Career (United Kingdom)
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
Identification: Pennant number: S108
Fate: Paid off
Badge:
General characteristics
Class and type:Swiftsure-class submarine
Displacement:4,900 tonnes (dived)
Length:82.9 m (272 ft 0 in)
Beam:9.8 m (32 ft 2 in)
Draught:8.5 m (27 ft 11 in)
Speed:Over 20 knots (37 km/h; 23 mph), dived
Complement:116
Armament:
  • 5 × 21-in (533 mm) torpedo tubes
  • Spearfish torpedoes
  • RN Sub Harpoon missiles
  • Tomahawk cruise missiles

HMS Sovereign was a nuclear-powered fleet submarine of the Swiftsure class.

Construction

Construction of the boat began on 18 September 1970; she was launched on 17 February 1973, and commissioned on 11 July 1974.

Operational history

In 1976, Sovereign played a role in Operation Brisk; the submarine surfaced at the geographical North Pole on 20 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 tailshaft 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 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.