A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Axcel B.
Date: 2016 Oct 18, 12:32 -0700
thanks for answering my question, and to David in particular for his very helpful diagram. I appreaciate the effort and time you took to draw this for me! It's much clearer to me now how this tweaking of GHA values is motivated. I therefore won't have to send another email to the UKHO and leave them in peace...
Thanks again to all of you!