If you just wish to query a location of a ship by date or spatial area, then use the Ship Location query form. Useful if you wish to confirm the location of a CTD or trawl from an observation date.
Data from Marine Science voyages can be accessed at the Marine Science Home Page. Look for the tab 'List of datasets'.
Track and Underway data is collected from almost all voyages and can be accessed using the following links.
Underway Data : Daily plots of Availability - check if data is available for particular instruments/sensors.
Data is currently been streamed back from Aurora Australis - use this link to get the currency of the latest data received
List of Underway Instruments / Sensors by voyage