The CSIRO Marine Laboratories are a purpose-built complex of science laboratories together with an administration and amenities block and a research support building, situated on Castray Esplanade adjacent to Princes Wharf on Sullivans Cove in Hobart, Tasmania, Australia. The buildings were constructed over the period 1982–1984 at a quoted cost of AUD$11.8 million, to provide new facilities to house the then CSIRO Division of Fisheries Research and the newly separated Division of Oceanography, formerly co-located in Cronulla, New South Wales, with an adjacent deep-water wharf capable of handling both Divisions' research vessels including the newly constructed Marine National Facility RV Franklin, delivered in 1985. Both the buildings and the Marine National Facility were part of a substantial (AUD$25m) upgrade to Australia's marine research capability introduced during the term of the 1975–1983 Liberal–Country party coalition Fraser Government, and continued by its successor, the Bob Hawke–led Australian Labor Party government, which took over in 1983. The laboratories continue in use as a CSIRO facility at time of writing (2026) as do the berthing facilities for the current Marine National Facility, the RV Investigator.