At 145ft long, Hemisphere is the world's largest sailing catamaran. Designed for action, there's a dive centre in one of the hulls, plus a 16.4m sports fishing boat, water scooters and all manner of boardsport paraphernalia thrown in.

If all that seems a little too much like hard work, it delivers on the lazy stakes, too. You can relax in the Jacuzzi, hunker down in the home cinema or luxuriate in one of the two master suites – which can be merged to form one mega-suite, outfitted in five-star Polynesian style. There's room for 12 high-rollers in all. She's likely to make appearances at Monaco and Cannes boat shows this autumn.

For charter, see burgessyachts.com