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West Wight Potter Mailing List maintainer
dfarrell@ridgecrest.ca.us
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I agree the GPS is more useful for navigation purposes since it is then
speed over the bottom that you're concerned with, but I would also like an
instrument that would show speed through the water so I can see how
efficiently I am sailing. Useful when experimenting with sail trim and such.
Harry Gordon
P14 #234, Manatee
Mountain View, CA
>One problem with any of the impeller driven systems is that all of them
>measure your speed in relationship to the water. An inaccurate reading will
>be obtained if there are currents present. Most of the good GPS receivers
>will give you an accurate "land speed" if they are receiving more than three
>satellites. You can use the difference in the speed to get a feel for
>current speed.
>
>Richard Dickerson, Ph.D., DABT
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