The Ruby Princess has been linked to 19 deaths in Australia and two in the United States. Australia has recorded 75 COVID-19 deaths. A government inquiry is underway into why 2,700 passengers and crew were allowed to disembark in Sydney on March 19 before the results of swabs of sick passengers were known.
Many passengers flew from Sydney overseas. Two died at home in the United States, including 64-year-old Los Angeles resident Chung Chen, whose family is suing Princess Cruises for more than USD 1 million for failing to alert passengers to the risk.
Princess Cruises is a subsidiary of Carnival Corporation, which is incorporated in Bermuda and headquartered in California.
New South Wales state banned further cruise ship arrivals until new health protocols are agreed with the federal government.
The Ruby Princess delayed its departure from Port Kembla, south of Sydney, because of sickness among crew members, several of whom have died in Sydney hospitals.
It left the cargo port with a skeleton crew late in the afternoon nudged by two tug boats.
A large banner strung across its stern said: "Thank You Illawarra," referring to the coastal region around the port.
Princess Cruises did not immediately disclose where the ship was heading. Media have reported its destination is the Philippines.
On Thursday morning, 300 Filipino crew left the ship and were taken to Sydney to catch a charter flight to Manila. They travelled from Port Kembla in 40 buses necessitated by social distancing rules.
One of the 550 crew members on board sent an email to Australian Broadcasting Corp. saying she had no choice but remain with the ship.
"We have been given no option to leave we have to stay on board. Myself and my family are worried and scared of what will happen next," the email said. ABC did not identify the author.
Health authorities said everyone who remained on board had been cleared of the virus.
State police are investigating whether Ruby Princess' management downplayed potential COVID-19 cases before passengers disembarked.
Police ordered all foreign cruise ships to leave the state in late March, fearful that sick crews could overwhelm Sydney hospitals.
Ruby Princess refused for fear of a COVID-19 emergency in the open ocean.
The ship's doctor Ilse Von Watzdorf told the first day of a New South Wales government inquiry into the debacle on Wednesday that she was surprised health authorities had allowed passengers to leave in Sydney before the test results were known.
Von Watzdorf gave evidence to the inquiry by video-link from the ship where she has been in quarantine.
The ship had returned to Sydney after an 11-day cruise to New Zealand, which was regarded as a low-risk destination. (AP) SCYSCY