Owner: Sheikh Mohammed bin Rashid Al Maktoum, Prime Minister of the United Arab Emirates
Estimated Cost: $300 million
At 531 feet, Dubai is the second-largest private yacht in the world. Originally named Platinum 525, the vessel belonged to Prince Jefri Bolkiah of Brunei before Maktoum took ownership of the cruiser in 2001. Dubai comes equipped with three elevators, a luxurious glass staircase, and a number of VIP suites, sunbathing areas and swimming pools.
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