Originally Posted by Skipper Solo
isn't it just too beautiful for words!
but is it actually useable for navigational purposes? Or is it just a pretty toy/eye candy/conversation piece? Looks like a serious piece of hardware
It looks serious to me. That it rotates in so many ways with precision ruled lines, and has pencils that go with it... I think it must do something more than a plastic toy.
Maybe you can find instructions on Google
, or just... try to work it out. Setup a problem-- look up one of the stars in the almanac, figure out where it would be, place it there on the device, and see if there's something to do.
The problem might be that it may be "backwards" from the way sight reduction is normally done, and so may have had it's own set of reduction tables or almanac in a different form. Though someone suitably nerdy could make current
tables or an almanac for it.
Also, keep in mind that aircraft used to use celestial navigation
. There are even weird aviation sextants that look like little machines. So this globe may be part of that system-- a way to speed up the calculation for someone who is moving fast. I don't know if they felt they need more or less accuracy for aircraft navigation
, but something to keep in mind-- it may be designed for a rougher idea of where you are.
When I was navigating traditionally I ended up making my own forms, since I felt that the forms in the back of books
made it more complicated than it needed to be. They seemed to be written for people who did not know basic algebra and wanted an algorithm spelled out as a word problem, which, to me, is more difficult to understand. So if you use this Russian globe I have a feeling you'd have to figure out your own system.
If you have to be conservative with money
, I feel that a taffrail log is really nice for traditional navigation (less work and more accurate than a chip log), and probably make a bigger difference in the daily routine than the Russian globe (however beautiful).
Well, good luck with it. I've found a lot of fun in traditional navigation.