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post #9 of Old 08-08-2013
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Re: The danger of GPS as the sole means of navigation.

Originally Posted by Ninefingers View Post
My iPhone is a whole lot easier to understand than my chartplotter, which I have given up on.

I would love to know how to use paper charts better, but I don't believe there is any formal teaching in my area.
At the risk of stating the obvious, the data used for your phone is the same used for marine chartplotters. The problem in these cases is usually not an equipment failure, the least expensive handheld GPS is amazing at telling your position on the face of the earth. The problem is the maps themselves.

I am surprised by how much people trust the electronic charts, enough to pilot around a rock with just 20 feet to spare.

Another great source is local knowledge. Guide books, fisheman, crusty old guys at the local marina etc.
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