Fitzgerald was further asked about the number of new cases affecting passengers and crew of Coral Princess today.

All were given a rapid test before being allowed to disembark, with those who tested positive being forced to stay on board and self-isolate.

‘We had more guests testing positive today as they got off the ship,’ she said, saying she thought it was ‘around ten o’clock’.

“These are the protocols that work,” she added.

“It shows that we are able to very successfully operate a cruise in a COVID environment.

“We knew this was coming. No one expected us to keep COVID from sailing. It was just about managing it.”

She said cruising is the only industry subject to the higher protocols.

Cruise lines must report cases to authorities.

She said NSW Health had agreed the RATs would be self-administered, in response to a question about some passengers saying no one had checked their tests.

“We ask them to certify that they have done so,” she said.

She said all passengers were told before they boarded that there had been cases among the crew.

She said it was the first time a cruise ship had visited Sydney with passengers for a day in more than two years, as Coral Princess is based in Brisbane.

He will leave for Brisbane tonight at 9 p.m.

Cruises resumed in Australia on May 31, with P&O Explorer the first ship to return.

The two ships are the only ones currently in Australia.