During her return from Korea, "Sydney" ferried Spitfires and Vampires between several British bases in Southeast Asia. After a brief refit, "Sydney" embarked the 20th CAG in June 1952, before proceeding on a round-Australia cruise. The carrier visited Manus Island, was present off the coast of the Montebello Islands for the first British atomic bomb test, Operation Hurricane, on 3 October, and arrived back in her namesake city in November. On 25 March 1953, "Sydney" departed for England with representatives from each of the three branches of the Australian and New Zealand militaries for the coronation of Queen Elizabeth II. The carrier and her aircraft participated in the Coronation Fleet Review on 15 June, and visited Canada, the United States, the Caribbean, Panama, Hawaii, and New Zealand on the return voyage, before reaching Sydney on 15 August. The carrier's 10,000th deck landing occurred during this voyage: a Firefly completed the landing on 17 July, while "Sydney" was en route to Pearl Harbor.