People enjoy the hot weather on the beach as the cruise ship "Disney Magic" ferry is seen docked in the port of Dover, amid the coronavirus disease (COVID-19) outbreak, in Dover, Britain August 9, 2020. REUTERS/Paul Childs

The Arcadia cruise ship anchored off the coast is seen behind a person relaxing in the sea, as it is unable to operate due to the coronavirus disease (COVID-19) outbreak, in Bournemouth, Britain, August 7, 2020. REUTERS/Toby Melville

An internet show host poses in the swimming pool on the Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

A member of the staff wears a mask and a face shield to prevent the spread of the coronavirus disease (COVID-19), at the canteen on the Explorer Dream cruise ship, in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

A member of the staff wears a face mask to prevent the spread of the coronavirus disease (COVID-19), at the canteen on Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

A woman takes a selfie in front of the Explorer Dream cruise ship, in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

Staff wearing face masks and gloves prepare to help passengers checking-in on the Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

A member of the staff wears a mask and a face shield to prevent the spread of the coronavirus disease (COVID-19), at the canteen on the Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

An internet show host enjoys the water slide on the Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

Social distancing signs are seen in the restaurant to prevent the spread of the coronavirus disease (COVID-19), on the Explorer Dream cruise ship, in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

Chen Hsiu-Hsi, the associate Dean of the Department of Public Health from National Taiwan University explains the use of a negative pressure isolation room to the media on the Explorer Dream cruise ship in Keelung, Taiwan, July 26, 2020. REUTERS/Ann Wang

The NickoVision river cruise ship arrives following the coronavirus disease (COVID-19) outbreak in Budapest, Hungary, July 16, 2020. Picture taken July 16, 2020. REUTERS/Bernadett Szabo

The NickoVision river cruise ship arrives following the coronavirus disease (COVID-19) outbreak in Budapest, Hungary, July 16, 2020. Picture taken July 16, 2020. REUTERS/Bernadett Szabo

A crew member of the NickoVision river cruise ship preprares to arrive following the coronavirus disease (COVID-19) outbreak in Budapest, Hungary, July 16, 2020. Picture taken July 16, 2020. REUTERS/Bernadett Szabo

Protesters form a human chain next to the water, demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

Protesters form a human chain next to the water, demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

Protesters form a human chain next to the water, demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

Protesters form a human chain next to the water, demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

Protesters form a human chain next to the water, demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

Protesters are seen on a boat as others form a human chain next to the water (not pictured), demonstrating against mass tourism, huge cruise ships and calling for a change in how tourists are catered for in the city after the lockdown due to the spread of the coronavirus (COVID-19) disease, in Venice, Italy. June 13, 2020. REUTERS/Manuel Silvestri

River cruise ships are seen parked on the Seine river in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

River cruise ships are seen parked near the Eiffel Tower as boats remain parked on the Seine river in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

River cruises ships are seen parked as boats remain parked on the Seine river in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

River cruises ships are seen parked near the Eiffel Tower as boats remains parked on the Seine river in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

River cruises ships are seen parked near the Eiffel Tower as boats remains parked on the Seine river in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

River cruises ships are seen parked near the Eiffel Tower as boats remains parked in the River Seine in Paris following the outbreak of the coronavirus disease (COVID-19), in France, June 11, 2020. REUTERS/Gonzalo Fuentes

View of SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

A migrant worker is seen in his cabin room onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

A migrant worker exercises onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Supplies are loaded up the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Migrant workers sit at a designated outdoor area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Migrant workers sit in a dining area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

A security officer in personal protection equipment stands guard outside the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Migrant workers sit in a dining area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Migrant workers exercise at a designated outdoor area onboard the SuperStar Gemini cruise ship, which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

Migrant workers sit at a designated outdoor area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

Migrant workers sit at a designated outdoor area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

Migrant workers sit at a designated outdoor area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

A print of Claude Monet's The Poppy Field painting hangs in a cabin room onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

Migrant workers sit at a designated outdoor area onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

A view of a cabin room onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

A migrant worker sits at a designated outdoor area overlooking the sea onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. Workers are allowed to use the designated outdoor spaces at staggered timings throughout the day. REUTERS/Edgar Su

A view of a cabin room onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

A view of a cabin room onboard the SuperStar Gemini cruise ship which is being used as a temporary accommodation facility for migrant workers who had recovered from COVID-19, amid the coronavirus disease (COVID-19) outbreak in Singapore May 23, 2020. REUTERS/Edgar Su

People look out towards cruise ships from Weymouth Bay, following the outbreak of the coronavirus disease (COVID-19), Weymouth, Britain, May 18, 2020. REUTERS/Matthew Childs

People look out towards cruise ships from Weymouth Bay, following the outbreak of the coronavirus disease (COVID-19), Weymouth, Britain, May 18, 2020. REUTERS/Matthew Childs

People walk a dog in Weymouth Bay as cruise ships are seen in the distance, following the outbreak of the coronavirus disease (COVID-19), Weymouth, Britain, May 18, 2020. REUTERS/Matthew Childs

Kayakers are seen in front of Arcadia cruise ship in Weymouth, following the outbreak of the coronavirus disease (COVID-19), Weymouth, Britain, May 18, 2020. REUTERS/Matthew Childs

People look out towards cruise ships from Weymouth Bay, following the outbreak of the coronavirus disease (COVID-19), Weymouth, Britain, May 18, 2020. REUTERS/Matthew Childs

Cruise ships located around the world during the Covid-19 pandemic

More than a dozen cruise vessels are clustered in a flotilla off Manila Bay in the Philippines awaiting testing procedures for hundreds of their remaining crew members.

A group of cruise ships are anchored in Manila Bay as its crew members undergo quarantine amid the coronavirus disease (COVID-19) outbreak, in Manila, Philippines, May 8, 2020. Picture taken May 8, 2020. REUTERS/Eloisa Lopez

A group of cruise ships are anchored in Manila Bay as its crew members undergo quarantine amid the coronavirus disease (COVID-19) outbreak, in Manila, Philippines, May 8, 2020. Picture taken May 8, 2020. REUTERS/Eloisa Lopez

A group of cruise ships are anchored in Manila Bay as its crew members undergo quarantine amid the coronavirus disease (COVID-19) outbreak, in Manila, Philippines, May 8, 2020. Picture taken May 8, 2020. REUTERS/Eloisa Lopez

Fishermen sail past a group of cruise ships anchored in Manila Bay as its crew members undergo quarantine amid the coronavirus disease (COVID-19) outbreak, in Manila, Philippines, May 8, 2020. Picture taken May 8, 2020. REUTERS/Eloisa Lopez

Fishermen sail past a group of cruise ships anchored in Manila Bay as its crew members undergo quarantine amid the coronavirus disease (COVID-19) outbreak, in Manila, Philippines, May 8, 2020. Picture taken May 8, 2020. REUTERS/Eloisa Lopez

A patrol boat sails past the Princess Cruises' Ruby Princess cruise ship as it docks in Manila Bay during the spread of the coronavirus disease (COVID-19), in Cavite city, Philippines, May 7, 2020. REUTERS/Eloisa Lopez

A fishing boat sails past the Princess Cruises' Ruby Princess cruise ship as it docks in Manila Bay during the spread of the coronavirus disease (COVID-19), in Cavite city, Philippines, May 7, 2020. REUTERS/Eloisa Lopez

A fishing boat sails past the Princess Cruises' Ruby Princess cruise ship as it docks in Manila Bay during the spread of the coronavirus disease (COVID-19), in Cavite city, Philippines, May 7, 2020. REUTERS/Eloisa Lopez

A fishing boat sails past the Princess Cruises' Ruby Princess cruise ship as it docks in Manila Bay during the spread of the coronavirus disease (COVID-19), in Cavite city, Philippines, May 7, 2020. REUTERS/Eloisa Lopez