It was one of the first crises in the pandemic.
In February 2020, the Diamond Princess cruise ship landed in the port of Yokohama with SARS-CoV-2 on board.
The authorities, still inexperienced with the disease, imposed a quarantine of several weeks on more than 3,700 passengers and crew members.
Patrick Welter
Correspondent for business and politics in Japan based in Tokyo.
Follow I follow
At times, more people were infected on the ship than in any country outside of China.
More than 700 people became infected with the virus on the ship, and 13 people died.
A little later, Japan blocked the landing of cruise ships - until now.
After more than two and a half years, travel to Japan with foreign cruise ships is now possible again.
The new guidelines include requiring at least 95 per cent of passengers to be vaccinated against Covid at least twice.
More than 160 landings in Japan have already been registered for the coming year.
The government is counting on more international tourists to boost the economy.
Almost 2.2 million cruise tourists visited Japan in 2019.