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    Re: Sumner Line using Ex-meridians
    From: Andrés Ruiz
    Date: 2013 Nov 18, 14:48 +0100
    The only way to obtain a fix with the observation of one celestial body is to measure its altitude and its azimuth: two unknowns, two equations. Graphically very easy to understand.

    Today impossible at sea!. There is no accurate enough azimuth available.

    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/
       
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