The A.R.A. "25 de Mayo" was build by Cammel Laird shipyard. Launched January 17th 1945 and commisioned to the Royal Navy as HMS "Venerable". Served in the Pacific after the 2nd WW. Decommisioned in 1947, was sold to the Netherlands April the 1st 1948 as HMNLS "Karel Doorman" (R81).
Rebuild in 1955/58 in Wilton Fijenoord with an angled deck, new elevators, new island, AAA guns, catapult and aviation and electronic facilities. Later, due to a fire on it's steam boiler, changed it status to reserve. Sold to argentina October 15th 1968. Requipped with steam boilers and turbines from his twin brother, Leviathan. Comissioned in March 1969 as A.R.A. "25 de Mayo", it replaced "ARA Independencia".
Took part during the landing April 2nd 1982. Later returned to base, due to the presence of Royal Navy's SSNs in the south Atlantic.
After 1985 it was out of service and waiting for a MLU, entering in reserve. In January 1999 was sent to Alang, India to be scrapped.
On his deck served Grumman F9F-2 Panther, T-28 Fennec, A-4Q Skyhawk, Super Etendard, Alouette III, AS-61D Sea King, Sea Lynx and S-2E/F Tracker.