The yacht's cost has been estimated at €340 million (approx. US$475 million as of September 2011), but a September 2009 report indicated that final costs could approach €800 million (US$1.12 billion). The final cost has been reported to be as high as US$1,500,000,000.
Eclipse has two helicopter pads, 18 guest cabins, two swimming pools, several hot tubs, and a disco hall. She 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.