What is Roman Abramovich's yacht?

Roman Abramovich's yacht is called the Eclipse, and it is one of the largest private yachts in the world, as of 2015. It was constructed by Blohm + Voss of Hamburg, Germany.

Launched in June 12, 2009, the Eclipse is the largest vessel that uses a rotor-based stabilization system, which is a system that is designed to counter roll motion at anchor and low cruise speeds. The boat is 533 feet long. It boasts a crew of more than 60 people, including both operators and servers. There are two swimming pools, multiple hot tubs, a submarine, a disco and 24 cabins for guests. There is also an extensive security system on board the yacht.