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Cruise ships are always pushing the boundaries of what's technically possible and borderline legal. Today we bring you some of the craziest things you can do on a Cruise!

1. RollerRacer.
On the Carnival Cruise ship, "Mardi Gras" is a rollercoaster that rises 57 meters above sea level and travels 360 degrees all around the ship.
It has two-seater motorbike-like cars that can reach speeds of up to 65 km/h.
The most exciting part is that riders can control the speed of their cars and their lap times are posted on a leader board for all to see!

2. Wrestling At Sea.
If you are a WrestleManiac, once a year the Norwegian Pearl offers Chris Jericho's Rock and Wrestling Rager At Sea!
Setting sail from Miami it's a 4-night round-trip cruise to Great Stirrup Cay, Bahamas.
4 days of wrestling matches and autograph sessions with Mark Henry, Hacksaw Jim Duggan, Chris Jericho, and many others, live music performances from Fozzy, Quiet Riot, and Chris Jericho's own cover band "Kuarantine", comedy shows, game shows, live podcasts, and costume parties. Book now and Chris might just tell you "You Made The List!"

3. Go Karts.
The Norwegian cruise ship "Encore" has a 350-meter-long Go-Kart course that crosses two decks, has 10 turns, and 4 parts of the course overhang the side of the ship. Each kart is electric-powered and can reach speeds of up to nearly 50km/h.
10 people can race at one time and spectators can also participate from an observation deck where, if they can shoot a kart with a laser gun, they will give it a temporary speed boost.

4. Nude Cruise.
No, we didn't make this up for a good thumbnail opportunity.

The Big Nude Cruise has actually been around for over 30 years! This Nudist cruise sails from Tampa to St Thomas, St Kitts, and Antigua and stops at other ports in the Bahamas during the two-week cruise. Activities include skinny dipping in the swimming pools and hot tubs, sunbathing, attending the Captain's cocktail party, or just hanging out at the bar with other like-minded passengers.

5. SkyBicycle
Sky Ride is a pedal-powered rollercoaster available on some of Carnival's cruise ships. The track suspends riders over 40 meters above the sea and twists and turns over the entire length and breadth of the ship. It's a great way to get a bird's eye view of the ship and burn off some of those excess buffet calories!

6. Surfing.
Several Royal Caribbean ships have an attraction called Flow Rider.
Flow Rider is a 12-meter-long surf simulator, it's perfect for all levels of surfers and bodyboarders, instructors can give novices classes or help intermediates perfect their technique, and because the speed and quantity of water circulating through the Flow Rider can be adjusted, expert surfers can also have a great time.

7. Floating Rope Course.
Norwegian Cruise Line's "Breakaway Class" ships offer incredible rope courses with up to 100 obstacles.
Zip lines, planks that overhang the vessel, suspension bridges, thin walkways, and rope ladders, all suspended over 30 meters above the sea!

8. Robotic Barmen.
Royal Caribbean's Quantum Class ships have something called The Bionic Bar. Unlike normal cocktail bars, this bar is staffed by two robots that will mix your cocktail with millimetric precision. You can pick any cocktail you want from the electronic tablet's gigantic menu or even design your own custom cocktail.
Information about the cocktails currently being mixed, their ingredients, how long till they're finished, and who they are for is displayed on multiple screens around the bar.

9. North Star.
Royal Caribbean cruise ship's Quantum Class vessels include a ride called "North Star". The ride consists of a 14-person glass pod that gets elevated up to over 90 meters above sea level and hung out over the side of the ship. The views from the pod are amazing and it's an incredible experience unless, of course, you are afraid of heights.

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