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Subject: Re: Variation of compass
From: David Weilacher (daveweilacher@XXX.XXX)
Date: Thu Oct 03 2002 - 14:08:22 EDT
Herbert;
Would you care to re-post your January message?
I missed it, forgot it, or wasn't interested at the time.
On Thu, 3 Oct 2002 18:00:06 +0000 Herbert Prinz <hprinz@XXX.XXX> wrote:
> I doubt very much that this is what Dave
> Weilacher wants. I thought that I
> had explained in my message re: Magnetic North
> Pole of Jan 11, 2002 that a
> magnetic compass does NOT point into the
> direction of the magnetic north
> pole.
>
> Incidentally, in the same message I already
> gave an answer also to Dave's
> more recent question about "sources to
> determine compass variation for your
> position at sea". The official source is still
> DMA chart 42, "Charts of the
> Earth's Magnetic Field". If you look at this
> chart you will see very clearly
> why a magnetic compass reading cannot be
> interpreted like one from a radio
> beacon finder.
>
> Herbert Prinz
>
>
> Michael Wescott wrote:
>
> >
> > Great circle is what you want, much the same
> as a fix on a radio beacon.
>
Dave Weilacher
.US Coast Guard licensed captain
. #889968
.ASA certified sailing and celestial
. navigation instructor #990800
.IBM AS400 RPG contract programmer
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