Join Date: Aug 2003
Location: Long Island, NY
Thanked 79 Times in 74 Posts
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A simple way would be to set your GPS to display magentic data, then motor around and see if it matches your compass. Pick a time of slack water to be more accurate.
Personally I have to state that I NEVER use my compass for navigation. I ALWAYS use my GPS to provide a bearing and then I follow that. If I can see something on land (which is most of the time because where I sail I can't ever be more than 10 miles from land) I aim for a point on land. if I can't see land than I try to keep the compass on a steady heading. The particular heading won't matter because my GPS is providing the bearing, so as long as I keep going in the right direction (keep the compass steady) I am going where I want to go.
Lastly, maybe it's just me, but I can't steer within 10 degrees at all. I go this way and that way all the time.
Caveats - I sail on the Long Island sound, so NAVIGATION is usually pretty easy. Go mostly east or west and maybe a little north or south until I get where I'm going. With GPS it's real easy. Without GPS I suppose I would just sail from buoy to buoy.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
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