"Sydney"s seventh voyage began on 19 May from Brisbane, with 2 RAR and a company from 1st Battalion, Royal New Zealand Infantry Regiment—the first New Zealand infantry force sent to Vietnam. "Sydney" and the destroyer escort "Stuart" reached Vũng Tàu on 30 May, where the troopship's passengers were offloaded by Chinook helicopters and replaced by 6 RAR. The ships left Vietnam on the same day, and arrived in Brisbane on 14 June. The eighth voyage required "Sydney" to transport 3 RAR from Adelaide. Departing on 20 December, "Sydney" was met by "Yarra" en route, with the two ships arriving in Vietnam on 27 December, and returning to Fremantle on 3 January 1968.