NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: instances of the use of "horizon grazing" technique
From: John Huth
Date: 2009 Oct 26, 12:20 -0400
From: John Huth
Date: 2009 Oct 26, 12:20 -0400
Yes, but Bowditch does say that it's not useful during the equinoxes. At the solstices, I tried the following - you cannot do better than estimating the time of sunrise and sunset to better than 2 minutes in the canonical emergency situation. In a cursory estimate, I got a best case scenario of 20 arc-minutes for latitude, but I guess some would consider good under those circumstances.
John H.
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John H.
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