This is just one of the ways in which sail power is being revived. For nine years a team of naval architects in Copenhagen, Denmark, has been working on a completely new design: a 50,000-tonne cargo ship whose diesel engine will be augmented by a set of high-tech sails set on six masts. Canvas is definitely out. Aerofoils are in.
LoL I knew someone would post something like that. Maybe I should change the example to covered wagons.