of a boat and a plane, they fly like an aeroplane but they stay very close to the water. we solved both the wave tolerance problem and the harbour manoeuvrability problem by using hydrofoils, which have been greatly advanced through things like the america s cup campaign. that lets us navigate through the crowded harbours on the hydrofoil, and then take off on the periphery of the harbour. a vehicle like this is six times faster than a ferry, half the operating cost of an aircraft, and completely eliminate emissions. they are calling it a sea glider. portsmith to cherbourg in 40 minutes six times the speed of today s ferries. the concept is straightforward: a battery powered sea skimming flying ferry. what is not to like about it? it s a fantastic idea. you know, the reality is we, as an industry, have to look at technologies for the future. we have to look at decarbonising maritime transport. and we have to look at what is a visionary, blue skies idea.