A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2015 Feb 21, 12:04 -0800
Compared are four short table reductions all performed on the same side of an index card. Weem's, Dreisonstok, Hughes, and Doniol. All are a pleasure to use without the need for a form. Weem's, Dreisonstok, and Hughes use an assumed position and log tables. Doniol uses a DR position and a natural haversine table. Doniol does involve a bit more math but makes up for it by using the DR position with a complete table set that fits in the wallet (try putting 229 in your wallet ;-).