It's been proven that when our visual sense is taken away, the vast majority of humans will think they are travelling in a straight line and will actually be travelling in circles.
Then even if you do have reasonable visibility. If you find yourself out of sight of land, there is no guaranty that you'll be able to line up on a course that will get you back to your chosen destination.
For those who venture some distance from shore. If you paddle in an area that can get fog, vog or enough haze to reduce visibility... The Ritchie Compass is a nicely sized instrument to get you heading back to a safe harbor rather than relying on our fallible human senses.
For more info or to reserve your Ritchie Compass send us an Email or call (808) 880-1400