By Capt. Bill Pike Photo Courtesy of SkysailsOnboard a comparatively small experimental vessel, Skysail techs deploy a towing kite of high-strength, weatherproof textiles for propulsion. Photo Courtesy of SkysailsSkysails fly in stronger, more stable winds. Photo Courtsy of SkysailsSome orientations are not possible. Illustration Courtesy of FerrettiThe Ferretti FER.WEY hull form facilitates cruising at efficient, intermediate speeds. Photo Courtesy of AABCompact azipods can be installed with propellers facing forward (seen here) or facing aft.