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Vanguard class submarine

The Royal Navy's Vanguard class of nuclear ballistic missile submarines (SSBNs) includes four boats: Vanguard (S28), Victorious (S29)[?], Vigilant (S30)[?], and Vengeance (S31)[?].

General Characteristics

  • Displacement: 15,900 tons submerged
  • Length: 149.9 meters
  • Beam: 12.8 meters
  • Draught: 12 meters
  • Complement: 14 officers, 121 ratings
  • Armament:
  • Sensors:
    • sonar (bow, flank, active intercept, and towed arrays)
    • periscopes: (attack and search)
    • collision avoidance radar



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