HMS Tireless (S88)

	HMS Tireless (S88) at the North Pole, April 2004
History
United Kingdom
Name	HMS Tireless
Ordered	5 July 1979
Builder	Vickers Shipbuilding and Engineering, Barrow-in-Furness
Laid down	6 June 1981
Launched	17 March 1984
Sponsored by	Sue Squires
Commissioned	5 October 1985
Decommissioned	19 June 2014
Homeport	HMNB Devonport, Plymouth
Identification	Pennant number: S88
Status	Decommissioned
Badge
General characteristics
Class and type	Trafalgar-class submarine
Displacement	Surfaced: 4,500 to 4,800 t (4,700 long tons; 5,300 short tons); Submerged: 5,200 to 5,300 t (5,200 long tons; 5,800 short tons);
Length	85.4 m (280 ft)
Beam	9.8 m (32 ft)
Draught	9.5 m (31 ft)
Propulsion	1 × Rolls-Royce PWR1 nuclear reactor, HEU 93.5%; 2 × GEC steam turbines; 2 × WH Allen turbo generators; 3.2 MW; 2 × Paxman diesel generators 2,800 shp (2.1 MW); 1 × pump jet propulsor; 1 × motor for emergency drive; 1 × auxiliary retractable prop;
Speed	Over 30 knots (56 km/h), submerged
Range	Unlimited
Complement	130
Electronic warfare ; & decoys	2 × SSE Mk8 launchers for Type 2066 and Type 2071 torpedo decoys; RESM Racal UAP passive intercept; CESM Outfit CXA; SAWCS decoys carried from 2002;
Armament	5 × 21-inch (533 mm) torpedo tubes with stowage for up to 30 weapons:; Tomahawk Block IV cruise missiles; Spearfish heavyweight torpedoes;

HMS Tireless was the third Trafalgar-class nuclear submarine of the Royal Navy. Tireless is the second submarine of the Royal Navy to bear this name. Launched in March 1984, Tireless was sponsored by Sue Squires, wife of Admiral 'Tubby' Squires, and commissioned in October 1985.

During the Cold War Tireless was primarily involved in anti-submarine warfare patrols in the Atlantic Ocean.^[5] After the Cold War, Tireless was deployed around the world, including to the Arctic Ocean, Mediterranean Sea and Pacific Ocean. At the end of its career, Tireless was involved in the search for the missing airliner, Malaysia Airlines Flight 370. The vessel experienced a number of serious accidents during its operational life.

Tireless had been scheduled for retirement during 2013, but its service was extended until eventual decommissioning on 19 June 2014. Tireless was replaced on active duty by HMS Artful.^[6]^[5]

^ HMS Tireless navy submarine ends service at Devonport, bbc.com, 19 June 2014
^ ^a ^b ^c ^d ^e ^f ^g ^h Bush, Steve (2014). British Warships and Auxiliaries. Maritime Books. p. 12. ISBN 978-1904459552.
^ "Trafalgar Class". Royal Navy. Archived from the original on 29 April 2014. Retrieved 31 October 2012.
^ "US study of reactor and fuel types to enable naval reactors to shift from HEU fuel". International Panel on Fissile Missiles. 10 April 2020. Retrieved 24 May 2022.
^ ^a ^b "HMS Tireless leaves active service". Royal Navy. 19 June 2014. Retrieved 21 June 2014.
^ Hansard HL Deb 14 March 2005 vol 670 c116WA quoted in House of Commons Defence Committee - Fourth Report, 12 Dec 2006

[1] HMS Tireless navy submarine ends service at Devonport, bbc.com, 19 June 2014

[Steve_Bush_2014-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h Bush, Steve (2014). British Warships and Auxiliaries. Maritime Books. p. 12. ISBN 978-1904459552.

[3] "Trafalgar Class". Royal Navy. Archived from the original on 29 April 2014. Retrieved 31 October 2012.

[4] "US study of reactor and fuel types to enable naval reactors to shift from HEU fuel". International Panel on Fissile Missiles. 10 April 2020. Retrieved 24 May 2022.

[leaves-service-5] "HMS Tireless leaves active service". Royal Navy. 19 June 2014. Retrieved 21 June 2014.

[Retirement05-6] Hansard HL Deb 14 March 2005 vol 670 c116WA quoted in House of Commons Defence Committee - Fourth Report, 12 Dec 2006

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History
HMS Tireless (S88) at the North Pole, April 2004
United Kingdom
Name	HMS Tireless
Ordered	5 July 1979
Builder	Vickers Shipbuilding and Engineering, Barrow-in-Furness
Laid down	6 June 1981
Launched	17 March 1984
Sponsored by	Sue Squires
Commissioned	5 October 1985
Decommissioned	19 June 2014
Homeport	HMNB Devonport, Plymouth
Identification	Pennant number: S88
Status	Decommissioned^[1]
Badge
General characteristics ^[3]
Class and type	Trafalgar-class submarine
Displacement	Surfaced: 4,500 to 4,800 t (4,700 long tons; 5,300 short tons)^[2] Submerged: 5,200 to 5,300 t (5,200 long tons; 5,800 short tons)^[2]
Length	85.4 m (280 ft)^[2]
Beam	9.8 m (32 ft)^[2]
Draught	9.5 m (31 ft)^[2]
Propulsion	1 × Rolls-Royce PWR1 nuclear reactor, HEU 93.5%^[4] 2 × GEC steam turbines 2 × WH Allen turbo generators; 3.2 MW 2 × Paxman diesel generators 2,800 shp (2.1 MW) 1 × pump jet propulsor 1 × motor for emergency drive 1 × auxiliary retractable prop
Speed	Over 30 knots (56 km/h), submerged^[2]
Range	Unlimited^[2]
Complement	130^[2]
Electronic warfare & decoys	2 × SSE Mk8 launchers for Type 2066 and Type 2071 torpedo decoys RESM Racal UAP passive intercept CESM Outfit CXA SAWCS decoys carried from 2002
Armament	5 × 21-inch (533 mm) torpedo tubes with stowage for up to 30 weapons: Tomahawk Block IV cruise missiles Spearfish heavyweight torpedoes