A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: John Brown
Date: 2015 Aug 3, 14:58 -0700
Good to see the cosine-versine formula of the New Navigation getting another airing.
"Good on all bearings-fails in no cases"
Excellent for calculations of zenith distance, although the ABC tables are (were) a quicker and more useful tool for azimuth.