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    Re: Mercator vs. Great Circle Charts
    From: Richard B. Langley
    Date: 2001 Aug 29, 9:32 AM

    How can the Satnav equipment still be in use? The Transit (NNSS) satellites
    are no longer broadcasting navigation data. Perhaps the ship has Russian
    equipment? I believe Tsikada is still operational.
    -- Richard Langley
       Professor of Geodesy and Precision Navigation
    
    On Wed, 29 Aug 2001, Young, Derrick wrote:
    
    >Rick,
    >
    >I understand your comment about SATNAV - but I was on a cruise ship recently
    >and they still had the equipment and it was still in use.  Like many
    >mariners - we seem to keep the old stuff "just in case."  I still found
    >folks onboard that thought it was funny that the quartermaster was taking
    >dawn/noon and dusk shots with a sextant and then working out the position
    >(by hand!) to confirm what the position that the GPS and LORAN-C were
    >reporting.
    >
    >It felt good (to me) to see their accuracy was a bit better than mine (lots
    >more practice!).
    >
    >derrick
    >
    
    
    ===============================================================================
     Richard B. Langley                            E-mail: lang---.ca
     Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/
     Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142
     University of New Brunswick                   Fax:      +1 506 453-4943
     Fredericton, N.B., Canada  E3B 5A3
         Fredericton?  Where's that?  See: http://www.city.fredericton.nb.ca/
    ===============================================================================
    

       
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