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    Re: Polar Possessions of the SU. was: Lunars with SNO-T
    From: Alexandre Eremenko
    Date: 2004 Oct 25, 21:58 -0500

    In my earlier message today,
    I gave a few web sites on this, and an instruction
    how to find 5000 others.
    I could not browse all of them:-)
    so cannot say at the moment whether any has something
    to do with Cel Nav, but there are many sites mentioning
    Sat Nav.
    Russian manual that I read in 1960-s had a special chapter
    on "Reduction of altitudes when North of the Polar circle."
    I don't remember what was in this chapter, except the problems
    with Mercator maps (their distortion becomes large).
    To this I add that this Russian manual recommended to always
    draw your position lines on the map (rather on a separate sheet)
    because each position line is useful by itself, not only their
    line of intersection.
    On Mon, 25 Oct 2004, Trevor J. Kenchington wrote:
    > George asked:
    > > I would like to learn more about the modern Northern sea-route. Is there a
    > > recommended publication in English? Does it still operate? How big are the
    > > convoys? Where do the ships  over-winter?
    > I once read an article about the shipping route through the North East
    > Passage but, despite scratching my head for the past 24 hours, I can't
    > recall where. The one point that I do remember is that the route has
    > some shoal areas (between the ice edge and the land) such that ships
    > must be either smaller than one would want for such a long voyage or
    > else designed to be relatively shallow draft.
    > In my abortive search for the article, I did come across a review of a
    > book that would likely contain pointers to sources that would answer all
    > of George's questions, though its focus is elsewhere:
    > "The Challenge of Arctic Shipping" by D.L.Vanderzwaag & C.Lamson
    > (McGill-Queens University Press, 1990). Should be available in the U.K.,
    > though perhaps only from research libraries of institutions with an
    > interest in the arctic, in shipping or in environmental management.
    > Note that this is the North East Passage (the Northern Sea Route or
    > "Glavsevmorput" to the Russians). The North West Passage is a much more
    > dubious commercial prospect, partly because the heaviest ice is centred
    > on the American side of the pole (thus away from the Asian side) and
    > partly because of the Canadian archipelago complicating the route.
    > Is ice navigation an appropriate topic for the list? From what little I
    > understand of the topic, it doesn't have much to do with position fixing
    > but rather finding ways to manoeuvre around the ever-changing obstacles
    > created by the ice.
    > Trevor Kenchington
    > --
    > Trevor J. Kenchington PhD                         Gadus{at}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
    >                       http://home.istar.ca/~gadus

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