A boat race using kites as navigational aids or for power, 1827.
© Science Museum / Science & Society Picture Library
Engraving by P Roberts after T Buttersworth, showing a sailing yacht followed by two open boats being towed by kites. A steamship is visible in the distance. Illustration from 'Treatise on the aeropleustic Art, or Navigation in the Air' by George Pocock, (London, 1827).