Autark-Zero is the first motor sailer to be equipped with a wing-sail; this type of sail has gained name & fame in the America’s Cup high performance foiling catamarans. The Autark-Zero however, is not a high-performance catamaran, instead this yacht is aimed at sailors looking for a relaxing experience without the hassle of lines, winches, hoisting and lowering sails. A wing-sail has much higher lift-coefficient providing more forward propulsion than a traditional fabric sail. Using a A-symmetrical foil even more lift can be generated. The pressure and propulsion power can be adjusted by means of flaps at the front and back of the wing, when jibing the flaps change position so the A-symmetrical foil is maintained.
On november the 18th 2019 a patent is granted by the Rijksdienst Voor Ondernemend Nederland for the design/concept of the wingsail. The patent is registered under number 1042863 in the patent register with the description: ‘Sailing vessel with a center sail and two hinged side-sails of which the outer form resembles the form of an aircraft wing.’
When the wing-sail is not in use the complete mast and sail assembly can be folded down and turns into a cockpit roof / bimini top. The raising and lowering of the wing-sail, like the control of the wing and flaps is a completely automated process. The central, on-board computer / autopilot effortlessly controls all moving parts and ensures the most efficient setting for the wing, flaps, rudders and dagger boards. The skipper and crew don’t need any sailing experience to enjoy a relaxing cruise on the Autark-Zero!