NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2012 Dec 6, 07:38 -0800
Here is the explanation for table 8 from a Bowditch Volume II .
A refraction factor is probably causing the differences. Also the value of the Earth radius may be different in the older Bowditch editions.
Greg Rudzinski
[NavList] Re: Bowditch: Distance to visible horizon
From: Bill B
Date: 06 Dec 2012 08:16
On 12/6/2012 4:56 AM, Gary LaPook wrote:
> That's interesting, the 1962 and 1975 editions give it as D=1.144 and
> the 1938 edition gives it as D=1.15.
First place I would look is the refraction values in the formula used to
derive distance to horizon.
Bill B
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