Zeppy 3: wind-powered airship to attempt Mediterranean crossing

http://www.gizmag.com/zeppy3-sail-balloon-mediterranean-crossing-attempt/15552/

Preparations are underway for a 150 mile journey from southern France to Corsica in a sail balloon. High flyer Stéphane Rousson is planning to pilot Zeppy 3 across a stretch of Mediterranean waters using only the power of the wind and a curved carbon foil based on the chien de mer by Didier Costes. Gizmag took the opportunity to have a closer look at the new balloon at the recent Paris Green Air Show.