DT Quokka (1801) was a medium harbour tug operated by the Royal Australian Navy (RAN) until 1998. She was constructed by Shoreline Engineers, Portland, Victoria in 1982 and completed in December 1983. Quokka spent most of her RAN career at HMAS Stirling in Western Australia, except for a brief stint in Darwin, and was sold in 1998. Quokka is now operated by Defence Maritime Services.