French adventurer and researcher Stephane Rousson prepares his ‘Aerosail’ yesterday in Roquebrune-Cap-Martin, southeastern France, prior to his planned attempt to cross the Mediterranean from Nice to Calvi, on the French Mediterraean island of Corsica. Aerosail is the result of Rousson and his partners’ ambition to create an innovative, efficient, and silent maritime vehicle, only using the wind as means of propulsion. Its unique principle of flight allows the user to pilot like a sailboat an airship linked by a cable to a stabilised keel, called the Seaglider. The cable acts as the mast and the airship as the sail. Rousson is planning his crossing for the end of October 2014.