Parramatta escorted
Royal Yacht Britannia during the visit of Queen
Elizabeth II in 1963. The ship served on patrol duties during the
Indonesia-Malaysia Confrontation during the mid-1960s. On 3 June 1964,
Parramatta and sister ship met the troop transport off the Philippines and escorted her to
Kota Kinabalu, Singapore, and
Penang to deliver Australian military units and supplies.
Parramatta escorted the former aircraft carrier back to Fremantle: the return voyage to Australia was interrupted on the morning of 23 June by the detection of a suspected Indonesian submarine: the two Australian ships performed evasion tactics for eighteen hours before resuming the voyage. Other deployments were made during 1965 and 1966, with this service later recognised by the
battle honour "Malaysia 1964–66". During late May and early June 1965,
Parramatta was one of several ships escorting
Sydney on her first troop transport voyage to
South Vietnam.
Parramatta and
Sydney worked together on the latter's tenth Vietnam voyage during March and April 1968 and continued service as Strategic Reserve until 18 April 1968.
Parramattas third escort run with
Sydney occurred in May 1971; the former carrier's twentieth Vietnam voyage. On 17 July 1976,
Parramatta was en route to Singapore when she was diverted to Bali in response to the
1976 Bali earthquake.
Parramatta underwent a modernisation refit at Williamstown Naval Dockyard between February and March 1968 where she was fitted with Ikara AWS and Quad Seacat SAM missile systems prior to deployment in South East Asia (Vietnam); and again on 26 August 1981, and visited the People's Republic of China in 1986. ==Decommissioning and fate==