Will the World's Largest Cruise Ship Sink or Swim?

For an industry rife with superstitions--it's bad luck to rename ships, step aboard with your left foot, sight a redhead before you sail--Friday the 13th would seem an unlikely day for Royal Caribbean Cruises Ltd.'s (RCL) newest vessel, Oasis of the Seas, to make her debut arrival in Port Everglades, Fla. Yet there she was, delayed two days by the stormy Atlantic on the way over from a shipyard in Finland, her 16 decks dwarfing the passing Miami skyline. The $1.4 billion megaship--the largest passenger ship ever made, with room for 6,296 guests--is nearly half again as big as the last...