Vanguard class submarine

The Vanguard-class nuclear attack submarines built for and operated by the Royal Navy from the late 1970s onwards.

The Vanguard-class pioneered many propulsion improvements including a natural circulation reactor plant, scoop seawater injection, the ability to cross connect main and auxiliary seawater systems, main air ejectors, and a directly coupled main engine turbine.

The Vanguard-class is comparable in capabilities to the OTL USS Narwhal (SSN-671). In OTL, The Vanguard-class is a class of four SSBN that entered service with the Royal Navy in 1993 and are still in service, ITTL given the lack of SSBNs, the Vanguard-class are just SSNs.

Specifications

• Type: Nuclear Attack Submarine
• Service Period: 1977-Present
• Characteristics:
  • Length: 316 feet (96.32 meters)
  • Beam: 38 feet (11.58 meters)
  • Draft: 31 feet (9.45 meters)
  • Displacement: 6,400 tons (Standard); 6,860 tons (Full Load)
• Crew: 108
• Propulsion: 1 x PWR.1C nuclear reactor, 1 x screw
• Range: Unlimited
• Speed: 30 knots (55.56 km/h)
• Sensor Suite:
  • Type 2020 ASDIC
  • Type 1006 RDF
• Armament:
  • 6 x 21-inch torpedo tubes (fires Spearfish torpedoes, Broadsword AShMs, and Storm Wind cruise missiles)`

Unit Run

Royal Navy

• HMS Vanguard (SN 151)
• HMS Victorious (SN 152)
• HMS Vigilant (SN 153)
• HMS Vengeance (SN 154)
• HMS Valiant (SN 155)
• HMS Venerable (SN 156)
• HMS Volcano (SN 157)
• HMS Vigourous (SN 158)
• HMS Valkyrie (SN 159)
• HMS Volunteer (SN 160)
• HMS Versatile (SN 161)
• HMS Valhalla (SN 162)
• HMS Vixen (SN 163)
• HMS Volage (SN 164)
• HMS Valentine (SN 165)
• HMS Virago (SN 166)
• HMS Vortex (SN 167)
• HMS Venom (SN 168)
• HMS Vineyard (SN 169)
• HMS Variance (SN 170)
• HMS Vulpine (SN 171)
• HMS Voracious (SN 172)
• HMS Virtue (SN 173)
• HMS Vampire (SN 174)

Royal Indian Navy

• HMIS Shishumar (SN 28)
• HMIS Shankush (SN 29)
• HMIS Shalki (SN 30)
• HMIS Shankul (SN 31)