Royal Caribbean International’s Harmony of the Seas, the world’s largest cruise ship, claims another record as home to the tallest slide and most exhilarating adventure at sea: Ultimate Abyss. The hair-raising, 10-story slide is “possibly the most thrilling manmade adventure at sea,” according to thrill engineer Professor Brendan Walker, Thrill Laboratory, U.K., director. Enlisted to identify the level of “thrill,” a sudden feeling of excitement and pleasure, triggered by the Ultimate Abyss, Walker measured physical reactions of testers brave enough to accept the challenge. Walker also compared the latest innovation by the global cruise line known for many firsts-at-sea to other Royal Caribbean signatures, the FlowRider surf simulator and RockWall, to compare the varying levels of thrill available onboard Harmony of the Seas. Ultimate Abyss scored a Walker Thrill Factor of 45.35 percent as compared to the FlowRider (36.15 percent) and RockWall (34.59 percent). Considering it is highly unlikely that a single experience could be designed to score a Walker Thrill Factor of 100 percent, these scores are understood to be at the highend of thrill attractions; therefore, making Harmony the ultimate cruise ship for adrenaline junkies.

The exciting multisensory experience that this tallest slide at sea offers, combined with other Royal Caribbean firsts such as the Flowrider and the RockWall, confirms that Harmony isn’t just the largest cruise ship in the world but also the ultimate adventure at sea.