The rise of the gigayacht

Updated 10:21 AM ET, Tue September 13, 2011
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Roman Abramovich's gigayacht Eclipse. The largest private yacht in the world at 163 meters, "Eclipse" is believed to feature around 24 guest cabins, two swimming pools, and a mini-submarine. Getty Images
The world's second-largest gigayacht, the "Dubai" is owned by Sheikh Mohammed bin Rashid Al Maktoum, ruler of the Emirate of Dubai and Prime Minister of the U.A.E. Getty Images
The 138-meter gigayacht Rising Sun is owned by Larry Ellison, CEO of Oracle Corporation. AFP/Getty Images
Microsoft co-founder Paul Allen's 126-meter gigayacht Octopus, pictured at Ushuaia Bay, southern Argentina. AFP/Getty Images