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    Navigation problem
    From: D Winchurch
    Date: 2006 Feb 22, 15:16 -0500

    To pass the winter's day I frequently turn to novels concerning the British
    navy in the late 1700's.  I came across passage where a small boat became
    separated from the mother ship in a fog.  They in the boat had taken bearing
    fore and aft  on the way out but had lost the compass in scuffle with the
    French.  In the fog they had no idea of the direction back to the ship.  The
    moon was barely visible above the fog.  They computed the way back
    
    For any meridian the moon will cross just 49 minutes after the sun crosses
    and the moon falls back 49 minutes every day.
    By counting the days after new moon, multiplying that number by 49 and
    dividing by 60
    One arrives at the time in hours and minutes when the moon is due south.
    With south noted and knowing the reciprocal bearing back the ship they could
    safely return.
    
    I haven' had time to check out the reasoning and math but I thought it would
    be of interest  to the list.   The author also described lunars in an
    earlier novel.  Quite interesting reading.
    
    Dick
    
    
    

       
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