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Old 08-19-2006
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knot meter

there are several different options for reading speed on some of the meters i have seen.(boat speed / max speed etc) can someone explain the differences for me?
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Old 08-19-2006
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Boat speed is the speed through the water at the moment. Max speed is the fastest the boat has moved through the water in some specified period of time (usually adjustable). Neither of these gives you boat speed over the GROUND which can be gotten from a GPS. To understand this...think of a boat at anchor with a 5 knot current against it. The GPS will record the speed as 0 knots over the ground but the knot meter thinks the boat is going 5 knots cause the little paddle wheel is turning.
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Old 08-20-2006
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Depending on your system there may be VMG which is the speed directly upwind which is calculated between your wind instrument and your knotmeter. It could also be towards some mark, in which case it is calculated by your GPS. There is also Speed Av which is the average speed since the instrument is turned on or reset. There is Trip Log that records the miles through the water that you have traveled since the instrument is turned on or reset or Log which tracks miles traveled since the instrument was installed.

Jeff
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Old 08-20-2006
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sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
That seems to cover it all...

btw Camaraderie, nice new av.
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Old 08-20-2006
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camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
Thanks SD...finally figured out how to do that! That shot was by the admiral from the dinghy in the Abacos and I had to furl sail to let the dinghy catch up...my wife thought I was finally going to escape!
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LOL, yes, but you didn't know that she had scuttling charges in the bottom of the boat...
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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