Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

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Hal Roth
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Re: European projections

From: Royer, Doug (no email)
Date: Mon Apr 03 2006 - 16:13:10 EDT

  • Next message: Bill: "Re: Simple celestial navigation in 1897"

      _____

    Thank you Marcel and George for your excellent, informative replies to my
    inquiry.

    If I was to travel to Britain or any of the continental countries I would be
    honored to share a pint or a glass of refreshment with any of you. Alas,
    it's nothing like that.

    It was only an inquiry.

    Since I do quite a bit of long cross country hikes and use excellent
    projections here in the States I was just curious as to what people in
    Europe use while doing the same thing.

    Over here we have a choice as to the format of the projections. Most use
    WGS84 datums but a few still use WGS27 datums. I especially like to use the
    large scale U.S.G.S. projections in the UTM (Universal Transverse Mercator)
    coordinate format and the smaller scale projections from the U.S.D.M.S. in
    the MGRS (Military Grid Reference System) coordinate format. Using these 2
    coordinate systems allows a person to more accurately pin point one's
    position (a meter or less on a 1:24000 projection) than using the Lat/Lon
    coordinates.

    Yes George, what you're explaining is the Grid North. Not the same as true
    north or magnetic north. When a person corrects or uncorrects a bearing
    using a grid system one must also compensate for that offset along with the
    declination (variation) offset.


  • Next message: Bill: "Re: Simple celestial navigation in 1897"



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