When the rich embark on a multi-million pound superyacht, there are only three things on the brain: sun, sea, and sex. But what really goes on when the yacht sets sail? The superyacht industry is booming. Two hundred and fifty thousand dollars a week will buy an itinerary with exotic ports of call like Ibiza, Monaco, and St. Tropez and a dozen dedicated crew members catering to your every whim--the ideal retreat for the mega-rich and famous. But mix...