Royal Caribbean Cruises chairman and chief executive Richard Fain beamed with pride upon seeing Symphony of the Seas in Port Miami for the first time.

After all, he was gazing upon the world's largest cruiseship as it dwarfed North America's largest cruise terminal -- his company's brand-new Terminal A -- during a naming ceremony for the huge vessel.

At 1,184 feet long and 18 decks high, the behemoth ship can accommodate 6,680 guests and is home to the Ultimate Abyss, a 10-story water slide.