Re: GPS Accuracy - how much is actually needed
With any notion that fog may happen, I keep a close eye on the proper compass course back to safety. I wouldn't consider entering a narrow rocky entrance in fog but would stay outside. In fact, I have done this several times while cruising. Seeing people underway in fog scares the crap outta me. Get almost run down once in the fog and you'll think better of being underway in it unless necessary.