HMS Tireless (S88)

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See HMS Tireless for other ships of the same name.

HMS Tireless (S88) at the North Pole
Career (UK) Royal Navy Ensign
Ordered: 5 July 1979
Laid down: 6 June 1981
Launched: 17 March 1984
Commissioned: 5 October 1985
Status: Active
General characteristics
Displacement: Surfaced: 4,740 tons
Dived: 5,208 tons
Length: 280.1 ft (85.4 m)
Beam: 32.1 ft (9.8 m)
Draught: 31.2 ft (9.5 m)
Propulsion: Rolls-Royce PWR1 nuclear reactor
2 × GEC turbines
1 × shaft pump jet 15,000 hp (11 MW)
motor for emergency drive
emergency retractable propellor
2 × W H Allen turbo generators 2 MW
2 × Paxman diesel alternators 2,800 hp (2.1 MW)
Speed: Dived: 32 knots (59 km/h)
Complement: 18 officers
112 enlisted
Sensors and processing systems: Ferranti/Gresham Dowty DCB/DCG
Type 2072 hull-mounted flank array passive sonar
Plessey Type 2020 or Marconi/Plessey Type 2074 hull-mounted active and passive search and attack sonar
Ferranti Type 2046 towed array passive search sonar
Thomson Sintra Type 2019 PARIS or Thorn EMI 2082 passive intercept and ranging sonar
Marconi Type 2077 short range active classification sonar
Kelvin Hughes Type 1007 I band navigation radar
Pilkington Optronics CK34 search periscope
Pilkington Optronics CH84/CM010 attack periscope
BAE Systems SMCS from January 1999
Type 2074 sonar from January 1999
Electronic warfare and decoys: 2 × SSE Mk8 launchers for Type 2066 and Type 2071 torpedo decoys
RESM Racal UAP passive intercept
CESM Outfit CXA
SAWCS decoys from 2002
Armament: 5 × 21 in (533 mm) torpedo tubes
Spearfish torpedoes (originally Tigerfish torpedoes) with 20 reloads
UGM-84 Harpoon submarine-launched cruise missile
Mines
Spearfish from January 1999
UGM-109 Tomahawk scheduled for 2006

HMS Tireless (S88), a Trafalgar class submarine, is the second submarine of the Royal Navy to bear this name. She was launched in March 1984, sponsored by Mrs Sue Squires, wife of Admiral 'Tubby' Squires, and commissioned in October 1985.

Over the next six years, Tireless completed numerous exercises and visits around the world, including a trip to the Arctic in 1991. In early 1996, she entered refit and returned to sea in 1999.

On 12 May 2000, Tireless detected a slow loss of reactor coolant, and put into the port of Gibraltar for what was hoped would be quick repairs to a minor crack in a coolant pipe. However, the damage was found to be more extensive than was first hoped, and the boat remained at Gibraltar, creating diplomatic tensions between Spain and Britain, until she left on 2 May 2001, nearly a year later following extensive repairs.[1] During that year, all Trafalgar-class submarines were inspected for similar problems.

On 19 April 2004, Tireless and USS Hampton rendezvoused under the Arctic ice and surfaced together at the North Pole.

Tireless again angered Spain in 2004 when the boat put into Gibraltar from 9 July to 15 July for what were explained as "technical reasons." Britain assured Spain that the port call was unrelated to the British celebrations, on 21 July, of the 300th anniversary of the capture of Gibraltar from Spain.

On 21 March 2007, two Tireless crew members were killed in an explosion onboard, apparently caused by an oxygen purification candle in the forward section of the submarine. The submarine was in service near the North Pole under ICEX07 along with the USS Alexandria and had to make an emergency surface through the ice cap. A third crewmember who suffered "non life-threatening" injuries was airlifted to a military hospital at Elmendorf Air Force Base near Anchorage, Alaska and was expected to make a full recovery. According to the Royal Navy, the accident did not affect the ship's nuclear reactor, and the ship sustained only superficial damage. Part of the exercise was being used to measure ice thickness by using sonar.[2][3]

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