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    Meridional Distances
    From: Peter Fogg
    Date: 2002 Sep 18, 08:53 +1000

    Have recently come across a new (to me) method of calculating rhumb line
    courses and distances, and also traverse calculations, where the
    starting position, course and distance are known, and the finishing
    position needs to be calculated.
    
    The method uses not just Meridional Parts, with which I am familiar, but
    also Meridional Distances, which are new to me.
    
    Although I have tables accurate to 2 decimal places for the Meridional
    Parts, the Meridional Distances come only in whole degrees, so need to
    be interpelated for in-between values.
    
    Despite this the method is simple and straight-forward enough, no more
    complex or prone to error than alternative methods. I am told it is
    particularly accurate, although I don't know if there is any way to
    check this. Used on old Silicon Sea problems it gives answers similar
    but not identical to the official answers, but then so do other methods
    - mostly!
    
    With a new Silicon Sea leg in the offing I intend to post a comparison
    of a few different methods (assuming it contains any such problems) and
    let others compare the results with their own methods.
    
    
    

       
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