As Ubisoft pointed out, the American Revolution was not just fought on land. It was also fought on sea.
Assassin's Creed III recreated the costal waters of the 18th century and designed an in-game weather system that can turn pleasant sea weather into anything but.
DISCUSSION
I have to say, the technology is quite impressive, but does anyone else feel like it almost should be an entirely different game? It doesn't feel like Assassin's Creed to me at all.