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    Re: Finding Latitude at Sea from Two Altitudes of the Sun and a Possibly Incorrect Watch
    From: David Pike
    Date: 2016 Aug 28, 02:08 -0700

    Frank:  As a largely ‘Armchair Navigator’ these days, I could see a use for this in cloudy conditions which gave only occasional glimpses of the Sun if you had a timepiece which was only good enough to time short intervals.  I agree though, it’s a bit ‘professorsorial’.

    Robin:  Please see my ‘homework’ attached.  I think I see the maths now.  My next ‘scratchings’ will be to see if I can use spherical triangle diagrams to show it has to work.  DaveP



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