NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Greg's article on hav-Doniol in "Ocean Navigator"
From: Greg Rudzinski
Date: 2015 Jun 11, 13:10 -0700
From: Greg Rudzinski
Date: 2015 Jun 11, 13:10 -0700
Gary LaPook has informed me that the azimuth example in the ON article is not explained and not needed since there is an azimuth graph. As usual Gary is right. Not only did I fail to explain the redundant azimuth formula but there is an arithmetic issue too :( The haversine Doniol azimuth formula (as arranged by Lars Bergman) is attached below along with corrected arithmetic for the example. Strangely the answer for Z is about the same.
Greg Rudzinski
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