HMS Vigilant (S30)

HMS Vigilant is the third Vanguard-class submarine of the Royal Navy. Vigilant carries the Trident ballistic missile, the United Kingdom's nuclear deterrent.

For other ships with the same name, see HMS Vigilant.

Returning from patrol April 2014
History
United Kingdom
NameHMS Vigilant
Laid down16 February 1991
Launched14 October 1995
Commissioned2 November 1996
HomeportHMNB Clyde
StatusIn active service
Badge
General characteristics
Class and typeVanguard-class submarine
Displacement15,900 tonnes, submerged
Length149.9 m (491 ft 10 in)
Beam12.8 m (42 ft 0 in)
Draught12 m (39 ft 4 in)
Propulsion
  • 1 × Rolls-Royce PWR2 nuclear reactor
  • 2 × GEC turbines; 27,500 shp (20.5 MW)
  • 1 × shaft, pump jet propulsor
  • 2 × auxiliary retractable propulsion motors
  • 2 × WH Allen turbo generators (6 MW)
  • 2 × Paxman diesel alternators; 2,700 shp (2.0 MW)
SpeedIn excess of 25 knots (46 km/h; 29 mph), submerged
RangeOnly limited by food and maintenance requirements.
Complement135
Sensors and
processing systems
  • BAE Systems SMCS
  • Kelvin Hughes Type 1007 I-band navigation radar
  • Thales Underwater Systems Type 2054 composite sonar suite comprising: 
    • Marconi/Ferranti Type 2046 towed array sonar 
    • Type 2043 hull-mounted active and passive search sonar 
    • Type 2082 passive intercept and ranging sonar
  • Pilkington Optronics CK51 search periscope
  • Pilkington Optronics CH91 attack periscope
Electronic warfare
& decoys
  • Two SSE Mk10 launchers for Type 2066 and Type 2071 torpedo decoys
  • RESM Racal UAP passive intercept
Armament
  • 4 × 21 inch (533 mm) torpedo tubes for:
    • Spearfish heavyweight torpedoes
  • 16 ballistic missile tubes for:
    • 16 × Lockheed Trident II D5 SLBMs (carrying up to 48 nuclear warhead)
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