A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Uncommon navigational declination chart, 1850s
From: Greg Rudzinski
Date: 2018 Sep 9, 17:26 -0700
Looks like a table for ex-meridians. Minutes of time from MP/LAN and the correction in minutes of arc to add to Ho. Similar to table 30 of the 1981 Bowditch.
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