9. Bill Gates

Name: Sinot
Value: $644 million*

Bill Gates nearly broke the internet when he was rumored to have commissioned a new hydro-powered superyacht worth more than half a billion dollars. The custom ship would be completely powered by liquid hydrogen, meaning that its only emissions will be water–a total game-changer in the world of gas-guzzling super-yachts. 

Hours later it came out, however, that the alleged purchase was a total hoax. Either way, the gorgeous vessel will be capable of accompanying 14 guests and 31 crew members, and will have everything on board from a yoga studio to an infinity pool.

With beautiful views from many points along the ship, it will be able to cross the Atlantic solely relying on hydro-power, making it the first of its kind and giving whoever owns it one hell of a bragging rite.