Conceived by Sussex-based boat designer John Shuttleworth, the Adastra Superyacht is a stunning $15 million vessel measuring 139.5 feet long and weighing 52 tons. It has a top speed of 22.5 knots can travel 4,000 nautical miles without refueling. Fuel efficiency is helped by a lightweight hull, made of glass and Kevlar, as well as an interior appointed with similarly lightweight oak cabinetry with honeycomb panels. Billed as the second largest of its kind, the trimaran took four years to build
