Eclipse- $1.2 billion

 Eclipse is a luxury yacht constructed by Blohm + Voss in Hamburg, Germany. The yacht is owned by Roman Abramovich, the exact length is unknown, however is believed to be over 164 metres (540 ft) long, and is due to be delivered to Abramovich in 2010 after the finishing touches have been applied. This makes Eclipse the world’s largest private yacht, 11 metres (36 ft) longer than the world’s previous biggest yacht Dubai, which belongs to Sheikh Mohammed, the ruler of Dubai. Her initial cost was estimated at € 340 million (circa $485 million US), but a September 2009 report indicated that final costs could approach $1.2 billion US (€ 800 million).

Eclipse has two helicopter pads, 11 guest cabins, two swimming pools, several hot tubs and a disco hall. She also comes equipped with three launch boats, and a mini-submarine that is capable of submerging to 50 meters. Approximately 70 crew members are needed to operate the yacht.