HMS Vengeance (S31)

	HMS Vengeance returning to HMNB Clyde in 2007
History
United Kingdom
Name	HMS Vengeance
Laid down	1 February 1993
Launched	19 September 1998
Commissioned	27 November 1999
In service	12 February 2001
Homeport	HMNB Clyde
Motto	Safe by my strength
Badge
General characteristics
Class and type	Vanguard-class submarine
Displacement	15,900 tonnes, submerged
Length	149.9 m (491 ft 10 in)
Beam	12.8 m (42 ft 0 in)
Draught	12 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 × Allen turbo generators (6 MW); 2 × Paxman diesel alternators; 2,700 shp (2.0 MW);
Speed	In excess of 25 knots (46 km/h; 29 mph), submerged
Range	Only limited by food and maintenance requirements.
Complement	135
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 warheads);

HMS Vengeance is the fourth and final Vanguard-class submarine of the Royal Navy.^[1] Vengeance carries the Trident ballistic missile, the UK's nuclear deterrent.^[2]^[3]

Vengeance was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering Ltd, later BAE Systems Submarine Solutions, was launched in September 1998, and commissioned in November 1999.^[4]

Before she was commissioned, the British Government stated that once the Vanguard submarines became fully operational, they would only carry 200 warheads.^{[citation needed]}

Vengeance carries unopened "last instructions" (letters of last resort) of the current British prime minister that are to be used in the event of a national catastrophe or a nuclear strike; this letter is identical to the letters carried on board the other three submarines of the Vanguard class.^[5]

^ Saunders, Stephen (2004). Jane's Fighting Ships, 2004–2005. Jane's Information Group Limited. p. 794. ISBN 0-7106-2623-1.
^ "Vanguard class submarine". Royal Navy. Archived from the original on 15 March 2016. Retrieved 2 May 2023.
^ "HMS Vengeance nuclear sub returns home after power loss". BBC News. 3 April 2011. Archived from the original on 15 October 2018. Retrieved 20 June 2018.
^ "The Current British Arsenal". The Nuclear Weapon Archive - A Guide to Nuclear Weapons. 30 April 2001. Retrieved 23 February 2007.
^ Hennessy, Peter (2007). Cabinets and the Bomb. Oxford: Oxford University Press. ISBN 978-0-19-726422-5. Reviewed on "Start the Week". BBC Radio 4. 5 November 2007. Archived from the original on 20 December 2018. Retrieved 9 October 2017.

[Janes-1] Saunders, Stephen (2004). Jane's Fighting Ships, 2004–2005. Jane's Information Group Limited. p. 794. ISBN 0-7106-2623-1.

[2] "Vanguard class submarine". Royal Navy. Archived from the original on 15 March 2016. Retrieved 2 May 2023.

[bbc.co.uk-3] "HMS Vengeance nuclear sub returns home after power loss". BBC News. 3 April 2011. Archived from the original on 15 October 2018. Retrieved 20 June 2018.

[4] "The Current British Arsenal". The Nuclear Weapon Archive - A Guide to Nuclear Weapons. 30 April 2001. Retrieved 23 February 2007.

[5] Hennessy, Peter (2007). Cabinets and the Bomb. Oxford: Oxford University Press. ISBN 978-0-19-726422-5. Reviewed on "Start the Week". BBC Radio 4. 5 November 2007. Archived from the original on 20 December 2018. Retrieved 9 October 2017.

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[2]

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[5]

History
HMS Vengeance returning to HMNB Clyde in 2007
United Kingdom
Name	HMS Vengeance
Laid down	1 February 1993
Launched	19 September 1998
Commissioned	27 November 1999
In service	12 February 2001
Homeport	HMNB Clyde
Motto	Safe by my strength
Badge
General characteristics
Class and type	Vanguard-class submarine
Displacement	15,900 tonnes, submerged
Length	149.9 m (491 ft 10 in)
Beam	12.8 m (42 ft 0 in)
Draught	12 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 × Allen turbo generators (6 MW) 2 × Paxman diesel alternators; 2,700 shp (2.0 MW)
Speed	In excess of 25 knots (46 km/h; 29 mph), submerged
Range	Only limited by food and maintenance requirements.
Complement	135
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 warheads)