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    Re: short horizon Hs correction
    From: Frank Dinkelaar
    Date: 2000 May 23, 07:28 EDT

    In regards to the attachment (navigation formulas) send by Ed Kitchin
    the formula in #1 of the great circle course
    it seems to me it looks like this
    cos D =  abs(sinL1 - sinL2) - abs(cosL1 x cosL2 x cos Dlo)
    it would save me many hours of experimenting if somebody
    could confirm or send me the formula in a clearer form.
    thanks
    

       
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