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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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