This might be my limit! A roller coaster on the deck of a cruise ship? Yes, it's happening. Carnival Cruise has announced that their new ship Mardi Gras will have a deck top roller coaster.

BOLT: Ultimate Sea Coaster will be an 800-foot long coaster that will have the twists and turns of a coaster and reach speeds up 40 mph. The track will sit 187 feet above sea level which will make up for the "lack" of speed to a traditional land coaster. The coaster will have motorcycle-style seats the riders will be able to control their speed so they can enjoy the ride and the views.

Carnival's Mardi Gras is currently under construction and will be ready to set sail in 2020.

Source: USA Today