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    Re: Chart scales
    From: Antoine Couëtte
    Date: 2011 Nov 2, 19:17 -0700

    Hello Peter,

    For decades, I have always used :

    1 centimeter equals one nautical mile to plot intercepts.

    All computations made with Calculators with DR position (or equivalent) chosen as close as possible from true position.


    After some weeks of use - in a quite remote past (almost 40 years back) - I ceased using the "Approximate Fix Computation method" , (i.e. the one with the HO xxx tables which for simplicity uses full degree assumed latitudes, and/or full degree assumed local hour angles) because the associated intercepts can be extremely important (over 30 NM) as they also yield extra and unecessary plotting inaccuracies.


    Best Friendy Regards from Mauritius Island


    Antoine M. "Kermit" Cou�tte

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