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.