Royal Caribbean's Oasis of the Seas was the largest cruise ship in the world when it was launched in 2009. As the line's debut Oasis-class ship, it's nearly five times bigger than the Titanic, weighing in at 226,838 gross tons. The vessel carries up to 6,771 guests across 2,801 staterooms and 2,109 crew members.
- travel.usnews.com/features/the-biggest-cruise-ships-in-the-world