cruise ship

The expedition cruise ship MS Roald Amundsen is moored at a quay in Tromso, Norway, on Saturday. At least 36 crew members from the ship have tested positive for the coronavirus. Ruen Stoltz Bertinussen/NTB Scanpix/AFP via Getty Images hide caption

The Carnival Corp. Miracle and Panorama cruise ships anchored in Long Beach, Calif. on April 13, 2020. Bloomberg/Bloomberg via Getty Images hide caption

Ruby Princess departs Sydney Harbour on Thursday. Three passengers and one crew member aboard the vessel have tested positive for the novel coronavirus. James D. Morgan/Getty Images hide caption

Checking for signs of COVID-19, a medical worker in a protective suit checks the temperatures of people who were on board the Diamond Princess cruise ship as they fly on a chartered evacuation plane from Japan to Lackland Air Force Base in Texas. Philip and Gay Courter/via Reuters hide caption

The quarantined Diamond Princess cruise ship has 65 new cases of coronavirus, Japanese officials announced Monday. Here, passengers with ocean-facing rooms stand on their balconies as the ship sits at the Daikoku Pier Cruise Terminal in Yokohama, Japan. Charly Triballeau/AFP via Getty Images hide caption

The MSC Opera cruise ship rammed into a dock and a tourist riverboat on a busy canal in Venice, Italy. An investigation is underway into the cause of the crash. Luca Bruno/AP hide caption

The river cruise ship Viking Sigyn collided with a tourist boat carrying 33 South Koreans on the Danube River in Budapest, Hungary, leaving at least seven people dead. Bernadett Szabo/Reuters hide caption

The Freewinds cruise ship, owned and operated by the Church of Scientology, was reportedly the vessel quarantined in St. Lucia because of a confirmed case of measles on board. Church of Scientology hide caption

The cruise ship Viking Sky reaches the port of Molde under its own steam on Sunday. SVEIN OVE EKORNESVAAG/AFP/Getty Images hide caption

A train passes over the Captain JP III cruise ship while it is stuck under a bridge spanning the Hudson River in Albany, N.Y. Hans Pennink/AP hide caption

British tourist Kay Longstaff speaks to the media upon her arrival in Pula on a Croatian coast guard ship on Sunday. AFP/Getty Images hide caption

A polar bear attacked and injured a polar bear guard who was leading tourists off a cruise ship on the Svalbard archipelago between mainland Norway and the North Pole. The polar bear was shot dead by another employee, the cruise company said. Gustav Busch Arntsen/AP hide caption