Royal Caribbean International is the most exciting & innovative cruise line in the cruise industry today. The cruise line currently has 22 ships in service, calling into more than 270 ports worldwide. Royal Caribbean’s new Oasis class ships, Oasis of the Seas & Allure of the Seas are the largest and most revolutionary cruise ships in the world. Oasis class ships span 16 decks, encompass 220,000 gross registered tons, carry 5,400 guests at double occupancy, and feature 2,700 staterooms.