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    Re: Variation of compass
    From: Dave Weilacher
    Date: 2002 Oct 3, 11:08 -0700

    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  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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