A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Francis Upchurch
Date: 2015 May 15, 23:09 -0700
Thanks Greg and Dave.
I did not know about Rust, but had the old 19th century Bowditch.(just found a copy of Rust for £12. ) I'll try the Rust + Otis King idea. (works well for Doniol Hc calculation). the Fuller does the Cosine formula fine. Dave, good idea re yet another slide rule! Maybe one day!