Tourism & Visitors Visas
Transit (Subclass 771)
The Transit visa (subclass 771) lets you transit through Australia for no longer than 72 hours if either:
you need to pass through Australia on your way to another country or
you need to pass through Australia to join a ship as a member of the crew.
You can include dependent children on your visa application if they are travelling with you on your passport. You might not need to apply for this visa. Do I need a Transit visa contains more information.