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| 1943-apr-15 | Laid down |  HMS Majestic as Colossus class hull | |
| 1943-apr-19 | Laid down | R93 HMS Terrible as Colossus class hull | |
| 1943-jul-29 | Laid down | HMS Magnificent as Colossus class hull, Yard No 1228. | |
| 1943-oct-12 | Laid down | R49 HMS Hercules Yard No 61 | |
| 1943-nov-27 | Laid down | HMS Powerful originally as Colossus class hull | |
| 1944-sep-30 | Launched | R93 HMS Terrible as HMS Terrible | |
| 1944-nov-16 | Launched | HMS Magnificent as HMS Magnificent | |
| 1945 | | HMS Majestic construction suspended until 1949 | |
| 1945-feb-27 | Launched | HMS Powerful as HMS Powerful | |
| 1945-feb-28 | Launched | HMS Majestic as HMS Majestic | |
| 1945-sep-22 | Launched | R49 HMS Hercules on Tyneside but work completed at Harland & Wolff, Belfast | |
| 1946 | | HMS Powerful construction suspended until 1952 | |
| 1948 | Fate: transfered | HMS Magnificent loaned to Royal Candian navy | |
| 1948-apr-7 | Commissioned |  CVL 21 HMCS Magnificent into RCN as HMCS Magnificent | |
| 1948-may-25 | Homeport | CVL 21 HMCS Magnificent departed UK for Canada with 19th CAG aboard, arriving Halifax NS on 1 Jun. | |
| 1948-dec | Fate: transfered | R93 HMS Terrible to Royal Australian Navy | |
| 1948-dec-16 | Commissioned |  R17 HMAS Sydney into RAN as HMAS Sydney, with deck letter K | |
| 1951-oct-4 | Deployment | R17 HMAS Sydney relieved HMS Glory for Korean War service with CAG-21 embarked, until 2 Feb 1952. Assigned RN Dragonfly HR.1 VZ965 as SAR Flt. | |
| 1952-apr | Fate: transfered | HMS Powerful sold to Royal Canadian Navy | |
| 1952-nov | Deployment | R17 HMAS Sydney relieved HMS Ocean as Duty Far East carrier. | |
| 1953-jun-15 | Deployment | CVL 21 HMCS Magnificent  Fleet Review: Coronation Review of the Fleet carrying Flag of Royal Canadian Navy | |
| 1953-jun-15 | Deployment | R17 HMAS Sydney Fleet Review: Coronation Review of the Fleet attended Coronation Fleet Review at Spithead | |
| 1954-jan | Aircraft | R17 HMAS Sydney received Dragonfly HR.3 WP498/-K on loan from FAA for 4 months, during Korean War deployment. | |
| 1954-may-12 | Deployment | R17 HMAS Sydney relieved by HMS Warrior, off Korea, to end deployment | |
| 1955-apr | | R17 HMAS Sydney role amended to flying training carrier and deck letter changed to S, with imminent appearance of HMAS Melbourne | |
| 1955-aug | Trials | HMS Majestic undergoing contractors inclining trials in the Buccleuch Dock at Vickers. | |
| 1955-oct | Fate: transfered | HMS Majestic to Royal Australian Navy | |
| 1955-oct-28 | Commissioned | R21 HMAS Melbourne into RAN as HMAS Melbourne, deck letter B | |
| 1956-apr | | R21 HMAS Melbourne departed UK for transit to Australia (deck letter Y). Arrived 10 May 1956 escorted by HMAS Sydney | |
| 1956-sep-21 | Deployment | R21 HMAS Melbourne departed Australia for S E Asia exercises. Group included HMAS Sydney, HMAS Quadrant, HMAS Queenborough and HMAS Quickmatch. Only time HMAS Melbourne and HMAS Sydney ever deployed together. | |
| 1956-sep-21 | Deployment | R17 HMAS Sydney departed Australia for S E Asia exercises. Group included HMAS Melbourne, HMAS Quadrant, HMAS Queenborough and HMAS Quickmatch. Only time HMAS Melbourne and HMAS Sydney ever deployed together. | |
| 1956-dec-29 | Deployment | CVL 21 HMCS Magnificent departed Halifax, NS en route Port Said with troops and equipment for UN Emergency Force, after the Suez Crisis. | |
| 1957 | Decommissioned | CVL 21 HMCS Magnificent returned to Royal Navy | |
| 1957 | | HMS Magnificent (1957) returned from loan by RCN and placed directly into reserve | |
| 1957-jan | Fate: transfered | R49 HMS Hercules sold to India, having never served | |
| 1957-jan-17 | Commissioned | CVL 22 HMCS Bonaventure into RCN as HMCS Bonaventure | |
| 1957-mar | Refit |  R11 INS Vikrant at Harland and Wolff, Belfast, until 1961 | |
| 1957-dec-4 | Aircraft | R21 HMAS Melbourne Sycamore HR.51 XD656 ditched in sea, while operating from HMAS Melbourne. | |
| 1958-may | | R17 HMAS Sydney into reserve, at approx 6 months notice to reactivate | |
| 1961 | Refit | R17 HMAS Sydney conversion to fast transport role (primarily for Army support), completed 1962 | |
| 1961 | Aircraft | CVL 22 HMCS Bonaventure Air group included up to 13 Sikorsky HO4S-3 in anti submarine role | |
| 1961-mar-4 | Commissioned | R11 INS Vikrant into Indian Navy, in UK | |
| 1961-mar-4 | Aircraft | R17 HMAS Sydney RAN 723 Sq Sycamore XD654/909 ditched alongside RN HMS Hermes, while operating from HMAS Sydney, 4 Mar 1961 nr the Cocos Islands | |
| 1961-apr | Aircraft | R21 HMAS Melbourne during late Apr, hosted RN 825 NAS Whirlwind HAS.7 during an amphibious landing exercise off northern Borneo, supporting RM 42 Commando from HMS Bulwark and US Marines from USS Thetis Bay. | |
| 1961-nov-3 | Homeport | R11 INS Vikrant arrived in Mumbai Harbour | |
| 1962-mar | | R17 HMAS Sydney recommissioned as a troop ship. | |
| 1963 | Refit | CVL 22 HMCS Bonaventure 4 month refit in early 1963, enabling the CHSS-2 to replace the HO4S-3 in the anti-submarine role from 1964. | |
| 1963-apr-20 | Aircraft | R21 HMAS Melbourne Konfrontasi embarked RN 814 NAS Wessex HAS.1 (usually based aboard HMS Hermes) for 3 weeks during spring 1963. | |
| 1963-aug | Aircraft | R21 HMAS Melbourne embarked anti-submarine force was the Wessex 31 of 817 Sq, until Feb 1976. | |
| 1965 | Deployment | R17 HMAS Sydney between 1965 and 1972, engaged in 20 or so supply missions to South China Sea (off Viet Nam), earning the nickname Vung Tau Ferry. Typically carried 4 Wessex HAS.31 for ASW duties. | |
| 1965 | Refit | R11 INS Vikrant | |
| 1965-mar-15 | Deployment | R21 HMAS Melbourne Exercise FOTEX 65 Exercising off Singapore in multi-national Naval Force | |
| 1965-jul | Fate: scrapped | HMS Magnificent (1957) scrapped at Faslane | |
| 1966-apr | Refit | CVL 22 HMCS Bonaventure Fitted Fresnel Landing Aid and Dutch radar systems, improved sea keeping and aircraft handling arrangements. | |
| 1967 | Refit | R21 HMAS Melbourne mid life refit until 1969, to re-equip for operating US components of her air wing | |
| 1967-nov-30 | Aircraft | CVL 22 HMCS Bonaventure CH-124 Sea King 4002 accident off Bermuda | |
| 1968-sep-20 | Deployment | R17 HMAS Sydney Exercise Coral Sands participated in Exercise Coral Sands, until 10 Oct. | |
| 1968-oct-12 | Port Visit | R17 HMAS Sydney visit to Wellington until 18 Oct, following Exercise Coral Sands. | |
| 1969-jun-3 | Deployment | R21 HMAS Melbourne 3 Jun1969, collided with the USS Frank E Evans, whilst participating in the SEATO Exercise Sea Spirit | |
| 1970-jul-3 | Decommissioned | CVL 22 HMCS Bonaventure | |
| 1971 | Fate: scrapped | CVL 22 HMCS Bonaventure components removed, then hull scrapped in Taiwan. Her anchor is feature of a memorial in Halifax. | |
| 1971 | Deployment | R11 INS Vikrant served during Indo-Pakistan war | |
| 1972 | Aircraft | R21 HMAS Melbourne From 1972, the usual 10 Wessex HAS.31 were replaced by 10 Sea King Mk.50 in her air group. | |
| 1973-nov | Decommissioned | R17 HMAS Sydney | |
| 1974-dec-31 | Deployment | R21 HMAS Melbourne Cyclone Tracy relief operations Departed Sydney on news of cyclone hitting Darwin. Arrived on station 31 Dec 1974 with most of HS-817 embarked and remained active until 30 Jan 1975. | |
| 1975-dec | Fate: scrapped | R17 HMAS Sydney sold for scrap Oct 1975, left for South Korea Dec 1975 | |
| 1976-feb | Aircraft | R21 HMAS Melbourne embarked anti-submarine force was the Sea King 50 of 817 Sq, until Nov 1981. | |
| 1977-may-9 | Aircraft | R21 HMAS Melbourne Sea King 08 accident | |
| 1977-jun-25 | Deployment | R21 HMAS Melbourne Fleet Review: Silver Jubilee of HM The Queen in UK waters for Silver Jubilee Fleet Review, off Spithead | |
| 1979-jan | Refit | R11 INS Vikrant Service Life Extension Programme at Mumbai, completed Jan 1982, included Ski-Jump for Sea Harrier operations. | |
| 1982-jun | Decommissioned | R21 HMAS Melbourne | |
| 1982-dec | Refit | R11 INS Vikrant modification to enable Sea Harrier operations, completed Feb 1983 | |
| 1983-nov | Fate: scrapped | R21 HMAS Melbourne | |
| 1997-jan-31 | Decommissioned | R11 INS Vikrant | |
| 2000 | Fate: museum | R11 INS Vikrant in Mumbai Harbour until 2004 | |
| 2014-nov | Fate: scrapped | R11 INS Vikrant at Powder Bunder, SE Mumbai | |
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