Celebrity Cruise Limited has merged with Royal Caribbean International to become the Royal Caribbean Crews, which operates the celebrities, Royal Caribbean International Azamar Club Crowes Pullman Arthur Crowes,
Norwegian Cruise Line Holdings Ltd. is a Bermudian company operating cruise ships, headquartered in unincorporated Miami-Dade County, Florida.It began operations in 1966 under the name Norwegian Caribbean Line
Royal Caribbean Cruises Ltd. is an American global cruise company incorporated in Liberia and based in Miami, Florida. It is the world's second-largest cruise line operator, after Carnival Corporation & plc. As of March 2009, Royal Caribbean Cruises Ltd. fully owns three cruise lines: Royal Caribbean International, Celebrity Cruises, and Azamara Club Cruises. Previously Royal Caribbean Cruises also owned %50 of Island Cruises,but this was sold to TUI Travel PLC in October 2008
Disney Cruise Line is a cruise line operation that is a subsidiary of The Walt Disney Company.The company was incorporated in 1996 as Magical Cruise Company Limited and is domiciled in London,England with their operational headquarters located in Celebration,Florida