The Wallaby-class water and fuel lighter is class of four Australian-built lighters which have supported the Royal Australian Navy (RAN) since 1981. The vessels were originally operated by the RAN, but were transferred to DMS Maritime after 1997. Their main role is to transport diesel fuel and desalinated water and remove sulage and ballast waters for the RAN, though they can also be used to control oil spills. The Wallaby-class craft are scheduled to be disposed of other the next few years, with replacement water fuel lighters proposed by DMS Maritime.