Has Russian billionaire Roman Abramovich been exaggerating the size of his gigayacht Eclipse (above), billed as the world's largest and most expensive privately owned yacht? Judging by Camper & Nicholsons' newly-released Super Yachting Index that would seem to be the case. C&N, the leading international yacht broker established in 1782, lists the world's largest yachts among other data in its much-anticipated report. According to their rigorously fact-checked figures, Abramovich's behemoth built by Blohm + Voss is still the world's largest yacht – but only by a hair. C&N states that it measures only 533 ft., a whopping 24 ft. shorter than the figure in general circulation. That means Sheikh Mohammed Bin Rashid Al-Maktoum's Dubai at 531.5 ft., which held the World's Largest title until the Eclipse was constructed, is only 18 inches shorter. And since the Dubai ruler basically owns his own shipyard now – the U.A.E.'s Platinum Yachts, where the Dubai was finished – it wouldn't take much for him to have it refitted with an extra few feet of metal to put Abramovich firmly in his place. We expect he'll see to it straight away – meanwhile, Abramovich should consider changing his yacht's name to something a little more humble, like Obstruction.