Leaving Portsmouth harbour. 29/08/06

T Class SSN, HMS Trafalgar S107


Ordered: April 7, 1977 Laid down: April 15, 1979 Launched: July 1, 1981 Commissioned: May 27, 1983 Status: active in service

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 and power: 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 1995

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 carried 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 SAWCS decoys carried from 2002