One of its vessels, the Aidavita, with some 1,100 passengers and 400 crew on board, was denied permission to dock at the Ha Long port in northern Vietnam this week. No reason was given for the refusal.

On Friday, Laem Chabang port in Thailand’s Chonburi province, south-east of Bangkok, said the Aidavita was scheduled to arrive there at 11 pm (1600 GMT).

AIDA said it would send the Aidavita and another vessel, the Aidabella, for tours in other parts of the world. The decision would affect some 3,300 passengers, the Rostock-based firm said.

The usual Asia tour season lasts until April. Each cruiseliner had been expected to do four more voyages, Aida said.

“For AIDA Cruises, the health and well-being of our guests and crew are always the highest priority,” said spokesman Hansjoerg Kunze.

There have been no confirmed cases of the new coronavirus on board an AIDA ship.