From memory they were still undergoing conversion at the time, and GF could confirm from memory they had long lead time to may what may happen hence the fast ferry HMAS Jervis Bay
OPERATION STABILISE (INTERFET1999-200) (wiki)
Of the 22 nations involved in INTERFET, 10 provided naval assets. Australia was the single largest provider, with 14 ships deployed with INTERFET between 19 September 1999 and 23 February 2000: the frigates Adelaide, Anzac, Darwin, Sydney, Newcastle, and Melbourne; the landing ship Tobruk, the landing craft Balikpapan, Brunei, Labuan, Tarakan, and Betano; the fast transport Jervis Bay; and the replenishment vessel Success. The United States contributed seven ships: the cruiser Mobile Bay; the amphibious assault ships Belleau Wood, Peleliu, and Juneau; and the replenishment ships Kilauea, San Jose, and Tippecanoe. France supplied four vessels: the frigates Vendémiaire and Prairial plus the landing ships Siroco and Jacques Cartier. Singapore contributed the amphibious landing ships Excellence, Intrepid, and Perseverance. New Zealand deployed the frigates Te Kaha and Canterbury and the replenishment ship Endeavour. Other naval vessels deployed during the operation included the Canadian replenishment ship Protecteur, the Italian amphibious assault ship San Giusto, the Portuguese frigate Vasco da Gama, the Thai landing ship Surin, and the British destroyer Glasgow.[19]
Bill and Ben were OP ASTUTE 2006