Re: wind indicator

Richard Fletcher (richard.fletcher@worldnet.att.net)
Sat, 24 Jul 1999 12:11:22 -0400


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West Wight Potter Website at URL
http://www.lesbois.com/wwpotter/
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Jim,
I don't think you can correct your vane to show true wind. The
apparent wind would be a result of your direction and speed as well as
the true winds direction and speed. Unless you had inputs for your
vessels speed and direction as well as the apparent wind speed and
direction, I don't think you can calculate the true wind.
I may be mistaken (it would only be the first time in the last 10
minutes...just ask my wife, the Commodore) so you may want to wait for
other input before you give up.

Dick Fletcher
P15 #667, Entropy
Raleigh, NC

james nolan wrote:
>
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> West Wight Potter Website at URL
> http://www.lesbois.com/wwpotter/
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> I've noticed that the compasses have an offset adjustment. Depending on your
> location and magnetic deviation you can adjust the compass from reading
> magnetic north (uncompensated) to reading true north (compensated). This
> adjustment is easily done in the cockpit with a small tool. I'd like to
> adjust my wind vane so that it reads true wind rather than apparent wind.
> What is unfortunate about this adjustment is that I have to keep hauling my
> wife to the top of the mast to make these adjustments. With the boat heeling
> and the wind blowing, my wife is usually not in the best mental state to
> make such an adjustment - especially an accurate one. Is there any way to do
> this adjustment with the mast stepped on the trailer?
>
> Jim Nolan