This dataset contains bathymetry (water depth), ship's heading, ship's speed and position data collected during the Nella Dan Voyage 5 1985-86. This voyage visited Davis, Mawson, Casey and Edgeworth David, as well as carrying out marine science research in Prydz Bay. Data are available online via the Australian Antarctic Division Data Centre web page (see Related URL below). For further information, see the Marine Science Support Voyage Report at the Related URL below.