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    Re: Relative plotting vs Geographical plotting
    From: Trevor Kenchington
    Date: 2002 Jan 12, 1:00 PM

    Herbert Prinz wrote:
    > How, I beg, is radar navigation on a sailboat different from that on a
    > power boat. If I am sailing in dense fog and see a plot on my radar, not only
    > must I guess power or sail, but even what tack this plot is on! This is plain
    > silly.
    At least where the international rules are applicable, the priority of
    sail over typical power boats (and of vessels not under command,
    restricted in their ability to manoeuvre, constrained by their draft,
    fishing etc. over both) is in the rules for vessels within sight of one
    another. So are the priorities of starboard over port and leeward over
    windward. They do not apply to vessels in fog so dense that one cannot
    be seen from the other.
    Trevor Kenchington
    Trevor J. Kenchington PhD                         Gadus@iStar.ca
    Gadus Associates,                                 Office(902) 889-9250
    R.R.#1, Musquodoboit Harbour,                     Fax   (902) 889-9251
    Nova Scotia  B0J 2L0, CANADA                      Home  (902) 889-3555
                        Science Serving the Fisheries

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