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    Re: Mid XIX century Nav
    From: Herbert Prinz
    Date: 2005 Nov 29, 00:40 -0500

    Bruce Stark wrote:(about Krusenstern):
    > Also interesting, to me at least, is that he uses WEST longitude, as
    > if he'd come into the Pacific around the Horn. Could that be the case?
    > Not knowing anything about his voyage, it doesn't seem likely to me.
    Yes, Krusenstern went west about.
    He uses east longitude between Kronstadt and Greenwich, but from then on
    he counts west full circle. For a circumnavigation, this makes a lot of
    sense. But even when you operate locally, why count longitude different
    from GHA? The question is related to the choice of prime meridian: If
    you think your harbour is the center of the world, you count east or
    west from there.
    Herbert Prinz

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