| Chart plotting goes back as far as the original explorers and cartographers. As soon as man was able to travel he needed a map and he also needed to keep track of where he was on the map. Not all that long ago, for some of us, electronic chartplotters were large commercial machines that allowed the user to "plot" by entering his position on an electronic map. The first truly electronic chartplotter used Loran C to enter the vessel's position on a map that was usually oriented North up. |
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