NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2011 May 15, 10:26 -0700
| It had never occurred to me to do a pre-calculated curve of altitudes for marine navigation until Greg mentioned it in the prior post. There is nothing about doing this in any on the marine navigation texts and I didn't find out about it myself until I started doing flight navigation. But the more I think about it the more I like the idea, especially for the situations mentioned in the original post. If you are just planning to sail locally, then do the computations the night before and make the graph.Then you can grab a sun sight anytime you want and the only calculation you have to do in the rolling boat is one subtraction. And for the first one or two days of a voyage, when the problem of mal de mer is most likely, complete the computations before casting off. See prior post: http://www.fer3.com/arc/m2.aspx?i=116371 Thanks for bringing up this idea Greg. Has anybody done this in their marine navigation practice? gl --- On Sat, 5/14/11, Gary LaPook <glapook@pacbell.net> wrote:
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