NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Working a lunar
From: Peter Fogg
Date: 2007 Sep 25, 13:21 +1000
From: Peter Fogg
Date: 2007 Sep 25, 13:21 +1000
Frank has responded:
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Of course the best backup for an integrated GPS system is a hand-held GPS
receiver in a nicely sealed case (with spare batteries).
Sure. Such was one of the 3. And don't those clever little things just chew up those little batteries bigtime!
But I didn't say
GPS; I said GMT. How many times have you lost track of GMT?? Let's be
empirical about this rather than theoretical: how many people do you know
who have lost all track of Greenwich Time on an ocean-going vessel?
Hey, how do you define 'ocean-going' ? Once I leave the coast that's me, I guess. Now where did I put my watch?
How many
times in the past 25 years has this happened to anyone in the world?
Quite a few, I would guess. I personally know people who've sailed off to Lord Howe from Sydney (heading northeast into the vast Pacific) with no more navigational preparation than a compass bearing (luckily for them the twin peaks can be seen from a long ways away). Not everyone is as well organised as you damn yankees.
Do you
know of any real examples where there was an emergency in which someone lost
track of GMT, had no wristwatch, no radio, BUT still had an excellent
sextant and navigational tables?
Bligh had a sextant but no charts. Nah, can't think of any. Is this important?
Maybe it's happened lots of times, and I
just haven't heard. Maybe not.
Hey Frank, while we have your attention, how do you know 'H' as in 'Ha' represents hauteur and not simply height?
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