@benkramer I was thinking if it would be fun to run realistic navigation with the players on a map like this. Print it REALLY big. Twice. DM has her map, marks the exact location, players give the heading they want to sail, rolls are made for perception, survival, navigators tools, the real heading they move in is then known to DM who describes the features they can see from the crows nest. Players then have to figure out where they are. Map has many dangerous areas marked...
@chloethecartographer I would be very surprised if there wasn't a system or supplement document out there for just such a thing.