NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Latitude from two altitudes
From: Joel Silverberg
Date: 2017 May 22, 06:56 -0700
From: Joel Silverberg
Date: 2017 May 22, 06:56 -0700
I am familiar with two methods for determining your latitude from double altitudes: an iterative method developed by Cornelius Douwes, a Dutch officer of sea officers and pilots around between 1740 and 1754 and a non-iterative method by Nathaniel Bowditch, first published in the 1826 edition of his New American Practical Navigator. You may view or download a paper which outlines the details of each of these methods at
https://www.academia.edu/5975644/
or at
https://www.academia.edu/5975644/Latitude_by_Double_Altitudes
