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    Re: Position lines, crossing.
    From: Peter Fogg
    Date: 2006 Dec 11, 13:30 +1100

    Robert Eno wrote:
    > I am not attempting to dismiss what George stated about errors in fix -- in
    > fact I agree with him. I am only questioning the practical need to consider
    > these errors for everyday navigation at sea.
    
    One practical way to take 'these errors' into account has brought up
    by George only to be dismissed. When a known risk exists in the
    vicinity, then assume the position (fix if you prefer, or 'probable
    position' or any other nomenclature of choice) lies along the LOP at
    the closest point to the danger, rather than the centre of the
    enclosing LOPs. I would contend that this is simple common sense.
    
    Nobody has ever suggested that this constitutes any guarantee that the
    actual position is located at the same point. Rather, since a position
    has to be derived from some data, this position is consistent with the
    data available and sensible risk management.
    
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