Royal Caribbean International (OSE: RCL NYSE: RCL) is a Norwegian-American cruise ship company base in Miami, Florida. It is a brand of Royal Caribbean Cruises Ltd., with 20 ships in service and three under construction. All the ships have names ending in "of the Seas." Royal Caribbean Cruises Ltd. also operates Celebrity Cruises, Pullmantur Cruises, Azamara Cruises and has a stake in Island Cruises.