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Old 06 November 2011, 14:14   #1
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GPS Speed meter

Folks having seen a lot of speedometers that use GPS to measure the speed I was think of getting one. As the GPS can only measure speed over ground (SOG) how does that effect its usefulness? Anyone using only a GPS for speed indication? What about EP calculation? Comments.
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Old 06 November 2011, 14:47   #2
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Depends. Do you have a specific need to know your speed through the water?

Personally, I am much more interested in how fast I'll get someplace, so SOG is what I want.

Not sure what EP is, so no comment.

jky
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Old 06 November 2011, 15:59   #3
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I think EP is estimated position but if you have a GPS you can use that to give your true position.
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