Boats with a length of more than 25 meters are called mega yacht or superyacht. The longest private superyacht in the world left the docks in Hamburg in 2009, with a length of 163 meters. It's owned by Russian billionaire Roman Abramovich. In addition to the usual standards of a superyacht, Abramovich's featues a submarine and missile defense system. Measuring in at 162 meters, the second largest superyacht is the property of the United Arab Emirates. The number one in sailing yacht size measures 93 meters in length. The sail area of its three masts counts more than 3600 square meters.