Ballistic Missile Submarine (SSBN)
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The Vanguard Class provides the United Kingdom's strategic and sub-strategic nuclear deterrent. The first Vanguard class submarine was launched in 1993 carrying Trident II D5 missiles and is now the cornerstone of our Defence policy and significantly contributes to the Alliance's deterrent forces.
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)
4 torpedo tubes capable of firing Spearfish Torpedoes
RESM Racal UAP passive intercept
Type 2046 towed array sonar
Type 2043 hull-mounted active and passive search sonar
Type 2082 passive intercept and ranging sonar.