ACV Ashmore Guardian
Niugini Guardian is a patrol vessel operated by Papua New Guinea and previously operated as the ACV Ashmore Guardian by the Customs Marine Unit of the Australian [Customs and Border Protection Service]. The former fishing supply vessel Roper K was converted in 2007-08 by Jurong SML in Singapore. It was leased to Customs, primarily to patrol the Ashmore and Cartier Islands for up to 330 days per year.