30 people were injured in what passengers described as “the cruise from hell”.
Carnival said it called police to "remove a family group of passengers". Police officers boarded the cruise ship Friday morning when it reached port of Eden, NSW South Coast.
The violent outburst took place on Carnival Legend during a 10-day voyage to the South Pacific.
On Friday, police escorted a group of passengers off the vessel and into a waiting bus that is understood will take the group to Canberra before they are flown home.
It's unclear whether arrests have been made.
Carnival Legend returns to Station Pier, Melbourne tomorrow morning.
For other Carnival Legend accidents and incidents see at the ship's CruiseMinus page.