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    Re: log lines
    From: Dan Hogan
    Date: 2003 Jun 11, 09:57 -0700

    Since, the biggest thing I ever sailed was 32 feet. I do my navigation with
    an error circle of at least the distance to the horizon. There is no way that
    I know of that you are going to get precision on a small boat. So I steer
    upwind and up current and maintain a 360 degree lookout.
    On 10 Jun 2003 at 23:26, Trevor J. Kenchington wrote:
    > Judging instantaneous speed is all very well (whether by visual
    > observation, Doppler log or anything in between) but how does that help
    > determine distance off from distance run? Look closely at the methods of
    > pre-electronic chartwork, as presented in countless textbooks, and you
    > will see (I do anyway) techniques built around an assumption that the
    > navigator knows distances run, not speeds.

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