Yes very interesting. Saw this story a few years ago. Got me thinking (dangerous thing to do sometimes).

Hmmm, My boats got an un-stayed
mast. I've got
electric propulsion. My
boat can move 3 knots (calm conditions) using just 900 watts of
power. All I would need to do is ditch the boom and sail. Cover the
deck with
solar panels and rig up a wind turbine that could rotate around the cut down unstayed
mast on bearings. Then I say I had better stop thinking about this.