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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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