Several cruise lines are adding theme park elements to their ships to offer additional thrills. Disney Cruise Line includes "AquaDuck" water coaster and "AquaDunk" thrill slide. Royal Caribbean offers "North Star," which moves a windowed capsule using a mechanical arm, a skydiving simulator ride, a FlowRider wave simulator and a zipline. Norwegian Cruise Line features a ropes course, a multistory drop slide and tube and bowl slides.
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