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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


    Kermit


    Antoine M. "Kermit" Cou�tte

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