All cruise ship visits to Tasmanian ports will be banned until June 30 as the state steps up its response to the coronavirus pandemic.
One domestic vessel will dock in Hobart today to refuel and resupply but no passengers will disembark.
Twelve scheduled visits will be disrupted by the ban.
Premier Peter Gutwein said the health of Tasmanians was the number one priority.
"While the risk to the public of coronavirus remains low, we want to take all precautionary action to manage the situation proactively, and keep people safe," he said.
He said Tasmanian borders would not be closed but they are looking into ways to make protections more robust.
"I won't be banning flights into the state, but certainly in terms of the flow of passengers and managing those international passengers we are considering measures in those areas," Mr Gutwein said.
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One of his main concerns was passengers disembarking cruise ships and deciding they wanted to stay in Tasmania.
"Something that I feel is a very real issue in terms of the challenges the cruise ship industry faces is we could have 2500 people disembark into Hobart and decide they don't want to get back onto a cruise ship," Mr Gutwein said.
"That would put significant strain on our own local resources in terms of housing and our hospital."
Tourism Industry Council Tasmania chief executive Luke Martin said the tourism industry supported the ban.
"This is just the latest in a series of body blows to the Tasmanian visitor economy, and unfortunately I doubt it will be the last we face as we work through the evolving coronavirus situation," he said.
"But the demand from the cruise sector to visit Tasmania is very strong, and like the rest of our tourism industry, I expect this sector will bounce back from this short term disruption strongly and quickly."
Independent McIntyre MLC Tania Rattray said she wondered why cruise ships were being banned and planes weren't.
She said it didn't make sense for international visitors to be allowed to come via plane and not on cruises.
Premier Gutwein said he does not have the power to stop planes but more robust protection measures at airports were being explored.
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