M/Y Eclipse is a luxury motor yacht constructed by Blohm + Voss of Hamburg, Germany. The yacht was delivered to Russian businessman Roman Abramovich on 9 December 2010. At 163.5 metres (536 ft) long, Eclipse is the world's second largest private yacht, 17.3 metres shorter than Azzam, which launched in April, 2013. The yacht's cost has been estimated at €340 million, but the final cost has been reported to be as high as US $1,500,000,000.
Eclipse has two helicopter pads, 24 guest cabins, two swimming pools, several hot tubs, and a disco hall. It is also equipped with three launch boats and a mini-submarine that is capable of submerging to 50 metres. Approximately 70 crew members are needed to operate the yacht.
For security, Eclipse is fitted with intruder detection systems and a German-built missile defense system. Abramovich's master suite and the yacht's bridge are fitted with armour plating and bulletproof windows. The yacht is reportedly equipped with an anti-paparazzi shield in the form of lasers that sweep the surroundings. When they detect a CCD, they shine a light directly at the camera to prevent the photograph. According to The Times, these do not run all the time, so friends and guests should still be able to take pictures. Instead, they will be activated when guards spot likely professional photographers nearby. How such a system could feasibly work has, however, not been demonstrated, leading some to doubt the claim's credibility.
Eclipse is also the largest vessel employing a novel rotor-based stabilization system against roll motion at anchor and at low cruise speeds, based on the Magnus effect.