NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Polar Possessions of the SU. was: Lunars with SNO-T
From: Alexandre Eremenko
Date: 2004 Oct 25, 21:58 -0500
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. Alex. 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@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 >