INDEX OF NAVAL
Fleet Aircraft Carrier
Implacable was ordered in 1938 and her sister ship in the Implacable Class, HMS Indefatigable was ordered a year later. In response to a Naval Staff requirement for greater speed and increased aircraft complement, an extra turbine and shaft were installed and the lower hangar was extended forward so that it was 46 feet longer than that in Indomitable. The armour plating on the hangar sides was increased to 2", and the height of the lower hangar was lowered by 2 feet so that both hangars had an overhead clearance of only 14 feet. The result was very cramped accommodation spaces, and a restriction on the type of aircraft that could be operated - the hangars were too low for Corsairs, and due to the unavailability of Hellcats the ships were compelled to carry short-range Seafires. The main external differences were the much enlarged funnel and longer island.
Construction was halted in 1940 by order of Winston Churchill, and even after it was resumed little priority was given to their completion. Implacable took 5 years to build, and by the time she was completed her sister was fully operational and already at sea in combat.
HMS Implacable's service history commenced in September 1944 as part of the Home Fleet. She took part in anti-shipping operations off Norway in 26-29 October, and on 27 November 1944. Following being drydocked to repair weather damage in December 1944, she departed for the British Pacific Fleet on 10 March 1945, where her large air groups, along with those of her sister ship, were responsible for the majority of sorties flown by the carriers of the British Pacific Fleet. She arrived at Sydney in mid-May; and took part in "training strikes" on Truk between 14-15 June 1945, and strikes against Japanese home islands between July-August 1945. She finally returned to the UK from the Pacific on 3 June 1946.
HMS Implacable acted as a deck-landing training ship in the Home Fleet between 1946-49, and was again an operational carrier in Home Fleet 1949-52. She became a training ship between January 1952-August 1954 and was paid off on August 1954. Implacable was broken up at Inverkeithing from November 1955.
Norway 1944, Japan 1945
No information on Captains.
Squadrons and Aircraft
August 1944: 48 aircraft - 24 Seafires and 24 Barracudas
March 1945: 81aircraft - 48 Seafires, 21 Avengers and 12 Fireflies
FAA squadrons embarked Dates Aircraft type 1771 Feb 1944-Oct 1945 Firefly I 828 Aug-Dec 1944 Barracuda II 841 Aug-Oct 1944 Barracuda II 887 Oct 1944 Seafire F.III/L.III 894 dt Oct-Nov 1944 Seafire III 880 Oct 1944-Sept 1945 Seafire F.III/L.III 801 Nov 1944-June 1946 Seafire 881 dt Dec 1944 Wildcat VI 828 Jan 1945-June 1946 Avenger I-III
Associations and Reunions
Carrier name HMS Implacable Class Implacable Class Type Fleet Aircraft Carrier Ships in Class Implacable, Indefatigable Launched Laid down 21 February 1939. Launched 10 December 1942. Commissioned 28 August 1944. Tonnage Displacement: 23,825 tons standard ; 32,624 tons full load Engines Propulsion: Steam Turbines (8 Admiralty 3-drum boilers, 4 shafts, Parsons geared turbines), 148,000 shp. Speed in Knots Speed: 32 knots Armament Guns: 8 x twin 4.5 inch ; 48 x 2 pdr AA ; 27 x 20 mm Crew Complement 1550 Officers & Ratings, 700 Air Group Range Range: 11,000 nmiles at 14 knots Length (ft/inches) Dimensions: 673 pp, 766.5 oa x 95.75 x 29 feet Beam (ft/inches) Draught (ft/inches) Flight Deck length (ft/inches) 760 Flight Deck width (ft/inches) 90 Armour 4" belt 4" hangar sides 3" flight deck 2" hangar decks Number of aircraft carried Aircraft: 54 Fate of carrier Paid off 1954 and stricken 1955. Broken up from November 1955. Notes The Implacable Class carriers were a follow-on from the Illustrious class which took Indomitable's modifications a stage further with a full length two-level hangar. Hangar height was even less than in the Illustrious' due to an attempt to stay within the London Naval Treaty's limitations on displacement. By the end of the war, deck parking allowed 81 aircraft to be carried. The lack of hangar height rendered the ships almost useless after the war, unable to operate many modern aircraft.
FURTHER INFORMATION HMS Implacable Class in THE ROYAL NAVY WWII website Details and specifications of the Implacable class including summary history History of Implacable in British Forces.com Aircraft Profiles by FAUCONBERG AEROGRAPHICS FAIREY FIREFLY F.R. Mk. I, 1771 Squadron, Royal Naval Air Service, H.M.S. Implacable, British Pacific Fleet, March 1945 Aircraft profiles are offered by Scott Fraser, owner of Tally Ho! decals, eg Firefly F Mk.II, Aircraft profile of Firefly F Mk.II, 1771 Squadron, HMS Implacable Royal Navy Ships of World War 2: Implacable class Large FleetCarriers Specifications in warships1.com British_carriers.htm HMS Implacable Earlier ship of 18th C Duguay Trouin (HMS Implacable) Home Page World Aircraft Carrier Lists and Photo Gallery - from 1913 to 2000. Naval History Information Center, Haze Gray & Underway Sturtivant, R & Ballance, T (1994). 'The Squadrons of the Fleet Air Arm' Published by Air Britain (Historians) Ltd, 1994 ISBN: 0 85130 223 8
The World’s Warships 1941 by Francis E. McMurtrie (1944). Jane's London 1941 1st ed.
Jane's Fighting Ships of World War II by Francis E. McMurtrie (Editor)(1984). 320 pages. Crescent Books; ISBN: 0517679639