Canadians Melina Roberge, 22, and Isabelle Lagacé, 28, travelled round the world on the MS Sea Princess, operated by California-based Princess Cruises, while allegedly carrying “commercial quantities” of the Class A drug before being detained in Sydney.
The glamorous pair attended court on Monday, along with their co-conspirator and fellow Canadian Andre Tamine, 63, charged with allegedly trying to smuggle 200lbs worth of cocaine into the country.
The luxury cruise, costing around £11,400, started in Britain and toured the US and South America, including Colombia and Peru, before sailing to New Zealand and then Australia.
The haul was the largest seizure in Australia of narcotics carried by passengers of a cruise ship or airliner, Australian Border Force commander Tim Fitzgerald said.
The three did not enter pleas when they were charged in the Sydney Central Local Court with importing a commercial quantity of cocaine. They face life sentences if convicted.
They will remain in custody until their next court appearance on October 26.