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    Re: GPS Accuracy Now.
    From: Will Martin
    Date: 2000 May 03, 07:20 EDT

    Philip, I agree with your thought that one mile accuracy is adequate for
    off-shore passagemaking, but I can only imagine that from your comment of
    accuracy of 30 meters or less being unnecessary, that you don't fish.
    Will Martin
    At 12:57 AM 5/3/00 +0200, you wrote:
    >For maritime users in small craft a GPS accuracy of 100 metres is more than
    >sufficient.   Provided you can find the fairway or safe water buoy at the
    >approaches to ones destination or the entrance to the harbour, it is far
    >to navigate by sight (i.e. pilotage) rather than by 'head-down' reference
    to the
    >Out at sea an accuracy of one mile is quite sufficient.
    >There are occasions when a greater accuracy would be useful such as an anchor
    >position in a crowded anchorage.    There is no real need to know the boat's
    >position to an accuracy of 30 metres or less.
    >Philip Ouvry

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