September 1974, the ship entered Garden Island Dockyard for an eight-month refit. On 22 August 1975, Vampire, sister ship , and the supply ship were prepositioned in Darwin following tensions between Indonesia and the former Portuguese colony of East Timor (which cumulated in the Indonesian invasion in December). The ships were to evacuate Australian citizens and Timorese refugees if needed, but this did not eventuate. On 21 September, the destroyer left Darwin for a five-month Strategic Reserve deployment. During her fifth deployment, which ended with her return to Sydney on 18 February 1976, Vampire joined training exercises with United States Navy ships in the China Sea, and visited sixteen ports in six countries for diplomatic and goodwill purposes. On 31 May 1976, Vampire and the destroyer escort departed Sydney Harbour for the United States. The two ships, along with the destroyer , visited ports along the west coast of the United States as the RAN representatives during the United States Bicentennial: Vampire visited Long Beach, California and Seattle, Washington. Vampire returned to Sydney on 6 August, but departed seven days later to participate in exercises in South East Asia. During the visit of Queen Elizabeth II and Prince Philip to Australia in March 1977, Vampire was assigned as the escort to Her Majesty's Yacht Britannia. Vampire met Britannia on 11 March, and accompanied the royal yacht to Sydney, Melbourne, Adelaide, and Fremantle. Between April and July 1977, Vampire was involved in two rescue missions and three fleet training exercises. On 5 September, Vampire left Sydney as "part of the RAN contribution to Queen Elizabeth's Silver Jubilee." The destroyer returned on 18 October. At the end of 1977, Vampire participated in Exercise Compass 77, held off Sri Lanka. The destroyer was primarily involved in training exercises during 1978 and 1979. In April 1979, it was announced that Vampire would be converted into a training ship. This refit was carried out from 21 January to 18 April 1980, and included the removal of the destroyer's M22 fire control radars, LW-02 air search radar, Limbo anti-submarine mortar, and twin Bofors mounts, and the installation of a training classroom where the Limbo previously resided. Following the conversion, Vampire was assigned to the RAN training squadron, where she joined . On 13 May, Vampire and Jervis Bay were ordered to the Solomon Islands to observe the splashdown of China's first intercontinental ballistic missile test-firing. The