The Implacable-class supercarriers, commonly know as the Improved Implacable class, are a class of aircraft carriers built for the Royal Navy and other Commonwealth and Allied navies. The name of the class indicates the roots of the class' design in the Implacable-class carriers of World War II. Currently, no Improved Implacable-class ships remain in service with the Royal Navy, but some remain in service with other navies. Improved Implacable-class ships are conventionally powered, have an overall length of 326.14 meters (1070 ft) and a displacement of 82,000 tons, and can carry up to 90 aircraft.

The Improved Implacable-class ships use angled flight decks in a CATOBAR arrangement.


  • Type: Supercarrier
  • Service Period: 1963-Present
  • Characteristics
    • Length: 1070 feet (326.14 meters)
    • Beam: 272 feet 82.91 meters)
    • Draft: 33.5 feet (10.21 meters)
    • Displacement: 64,600 (Standard); 82,260 tons (Full Load)
  • Crew: 4,460
  • Power: 307,500 shp
  • Propulsion: 6 x Y300 steam boilers, 4 x steam turbines, 4 x shafts
  • Range: 16,500 nautical miles (30,560 kilometers) at 15 knots (27.78 km/h)
  • Speed: 36.5 knots (67.6 km/hr)
  • Sensor Suite:
    • Type 909 Sea Dart Fire Control RDF x 2
    • Type 974 Navigation RDF
    • Type 982 Fighter Control RDF
    • Type 983 3D Air Search RDF
    • Type 988 3D Air Search RDF with CDS
    • Type 992 2D Surface Search RDF
  • Armament
    • 4 x Sea Dart GWS.30 Mod 1 AAM launchers
    • 3 x CIWS
  • Airwing: 90 fixed wing aircraft and helicopters
  • Aviation Facilities: 4 x BS Mk.VI steam catapults, 3 x deck edge elevators, 4 x wires and Mk.14 arrestor engines

Ships in classEdit

Royal NavyEdit

  • HMS Implacable (R57)
  • HMS Formidable (R58)
  • HMS Theseus (R59)
  • HMS Venerable (R60)
  • HMS Pioneer (R61)
  • HMS Majestic (R62)
  • HMS Audacity (R63)
  • HMS Pathfinder (R64)

Royal Indian NavyEdit

  • HMIS Viraat (R I01)
  • HMIS Vishal (R I02)

Royal Australian NavyEdit

  • HMAS Brisbane (R A03)
  • HMAS Commonwealth (R A04)

Royal Canadian NavyEdit

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