Cruise Ships Sailing May 2021 Update May 01, 2021 The cruise industry is restarting in a big way in Europe with more ships entering service in May, while in North America, service resumptions involve sailing in the Caribbean and with U.S.-flagged ships in Alaska. Here are the cruise ships currently back in service or planning restarts in May and into June: Cruise Line: Royal Caribbean International Ship: Quantum of the Seas Capacity (at 100% Occupancy): 4,100 Built: 2014 Status: Sailing Ship: Odyssey of the Seas Capacity (at 100% Occupancy): 4,100 Built: 2021 Status: Planned – first sailing scheduled on June 2, 2021 Cruise Line: Royal Caribbean International Ship: Adventure of the Seas