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Swiftsure Class

Name	Builders	Laid down	Launched	Commissioned
S104 Sceptre	V	19th February 1974	20th November 1976	14th February 1978
S108 Sovereign	V	18th September 1970	17th February 1973	11th July 1974
S111 Spartan	V	26th April 1976	7th April 1978	22nd September 1979
S112 Splendid	V	23rd November 1977	5th October 1979	21st March 1981
S109 Superb	V	16th March 1972	30th November 1974	13th November 1976
S126 Swiftsure	V	1969	1971	1973

Builders:
V : Vickers, Barrow, United Kingdom

Dimensions:
272' x 32' 4" x 27' / 82.90m x 9.8m x 8.20m

Displacement:
4200 tons surfaced / 4900 tons dived

Complement:
12 + 85

Armament:
5 x 21" bow torpedo tubes

A total of 20 torpedos could be carried, usually Mk8 or Mk24 Tigerfish models. Mines could also be carried.

Powerplant:
One Rolls Royce PWR1 nuclear reactor was fitted, driving two GEC steam turbines producing a total of 15000shp and driving one shaft. Maximum speed was 20kts surfaced and 28kts dived. A Paxman diesel generator is also fitted. A Paxman diesel generator is also fitted.

Electronics Fit:
Radar:
Type 1006 navigation

Sonar:
Type 2001 conformal
Type 2007 flank mounted
Type 197 intercept

Some of the later boats were fitted with the Type 2019 PARIS array during construction.

Other:
DCB AIO / fire control

Miscellaneous:
Two SSE Mk6 decoy launchers are fitted with Type 2066 and Type 2071 decoys.