Implacable Class, British Fleet Carriers

Photograph of HMS Implacable, British aircraft carrier

Imperial War Museum. Via Wikipedia Commons


Tonnage 23,450 tons standard displacement
Dimensions 766'6" by 95'9" by 26'
233.63m by 29.18m by 7.92m
Maximum speed      32 knots
Complement 1400
Aircraft 750' (228.6m) flight deck
2 elevators
1 catapult
54 aircraft
Armament 8x2 4.5"/45 dual-purpose guns
48 40mm/40 AA guns
4 40mm Bofors AA guns
60 20mm AA guns
Protection 4.5" (114mm) belt and bulkheads
2" (51mm) NC hangar sides
3" (76mm) flight deck
3" (76mm) hangar floor
3" (76mm) steering
1.5" (38mm) torpedo holding bulkhead
13'5" (4.1m) torpedo protection depth designed against 750 lb (340kg) TNT
4-shaft Parsons geared turbines (148,000 shp)
8 Admiralty 3-drum boilers
Bunkerage 4690 tons fuel oil
94,650 gallons (358,300 liters) aviation gasoline
Range 11,000 nautical miles (20,000km) at 14 knots
Type 281 air search radar
Type 277 height-finder
Type 293 fire control radar
1945: Up to 81 aircraft in deck park; complement up to 2467

The Implacables were based on the Indomitable. Freed of treaty restrictions, they had four shafts instead of three, had a more heavily armored hangar, and could carry more aircraft. However, the heavier hangar protection came at the cost of lowering the height of the second hangar deck, which by the end of the war seriously limited the types of aircraft that could be struck below.

Units in the Pacific:

Arrived 1944-11
Arrived 1945-3    


Chesneau (1992)

Gogin (2010; accessed 2012-12-24)

Worth (2001)

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