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    Re: Captain Schufeldt's report on marine sextants
    From: Jared Sherman
    Date: 2002 Dec 27, 03:24 -0500

    Marc-
     Appendix III (which if I understand correctly may come from HM Naval Almanac 
    Office) states "As has been noted in the body of this report the Nautical 
    Almanac does not give sufficient accuracy when a position must be fixed with 
    an error of less than 0.2 miles. For such use it is recommended that the data 
    on....with an end accuracy of 0.05 minutes of arc...An electronic computer be 
    used.."
     Certainly an error of 0.2 miles would make me happy. But apparently data 
    can be carried to a much higher precision than that used to generate the 
    almanac, and for a computer program to use 6 or 8 digits of precision in 
    making mathematical calculations hardly takes up any extra "space" at all in 
    the device these days.
    
     Apparently such additional accuracy would be totally destroyed by near-shore 
    thermal problems. Still, the report endorses the use of computers several 
    times for several reasons, among them the ability to make rapid sequential 
    reductions, and the ability to use greater accuracy.
    
    
    

       
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