This French catamaran sailing vessel takes solar power to a whole new level. I have a soft spot for solar powered anything, but this ship combines HYDROGEN based energy storage, with solar and wind power, plus a little spinnaker sail.
Named "Energy Observer", they have somehow managed to disguise the "ugly" side of solar panels everywhere, in their design. The vertical axis wind turbines look small, but obviously have a place when there is no sun. Instead of heavy batteries it actually converts the salt water into Hydrogen, which it then uses at night or when it needs to - very cool idea.
Will be interesting to see how it fares in big waves.
You can follow their six year voyage around the world, in their web site, which is the source of the image:
http://www.energy-observer.org/en/#bateau