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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Finding latitude by length of day-condensed files
From: UNK
Date: 2009 Dec 6, 11:59 -0800
From: UNK
Date: 2009 Dec 6, 11:59 -0800
This topic has come up from time to time. To further this discussion I am attaching excerpts from two references. First, AFM 64-5, "Survival." This manual contains a nomogram for this determination. Second, excerpts from Gatty's "Raft Book." There is a detailed table on the back of his world map for this computation. There are also instructions for making a "harp" to use in measuring altitudes. Both of these books also contain methods for determining longitude by timing sunrise. My prior post included files that are quite large, I found our how shrink them down and here are the condensed versions. glFile:
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