World's Largest Private Yacht Sails...

It is the biggest private yacht in existence and comes with a missile-detection system, two helipads, a luxury spa, swimming pool and a miniature submarine.
But when you're Russian oligarch Roman Abramovich, only the most ostentatious displays of wealth will do.
His latest baby is the Eclipse, a 557-footer reported to have cost a staggering £300million.
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