NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2020 Feb 1, 19:16 -0800
To recap...... I did not know where I was. By various means I concluded that I was somewhere in the southern ocean near New Zealand:
I determined the approximate time of noon and estimated that my long was about 174°E.
I took a sight when the sun was on the prime vertical which gave a long of about 176°E.
By various means I concluded that my lat was somewhere between 22°S and 52°S.
I selected 52S 174W (not a typo) as my AP. Why W I do cannot remember. I wanted an extreme AP but I think I may have made an arithmetical mistake.
I worked the long by chron as an intercept. I then took a sight with my AH when Ho was < 60° and calculated the intercept. I plotted the intercepts on google-earth and selected 43°S 176°E as a new AP. I chose in integral number of degrees so I could work the sights with 214.
I have not yet used the new AP but from the diagram I can confidently conclude that the solution is converging.
