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Subject: Re: Meridional Distances
From: Chuck Taylor (ctaylor@XXX.XXX)
Date: Tue Sep 17 2002 - 19:25:10 EDT
>
> Although I have tables accurate to 2 decimal places for the Meridional
> Parts, the Meridional Distances come only in whole degrees, so need to
> be interpelated for in-between values.
Peter,
Bowditch has tables of Meridional Parts to quite a number of decimal places.
The method for computing distances using Meridional Parts is called "Mercator
Sailing" and is also described in Bowditch.
The introduction to the tables in Bowditch gives a formula for computing
Meridional Parts. I have programmed this into a calculator. One could also
program it into a spreadsheet. If memory serves me correctly (I'm away from my
home library) there is a typo in the formula in Bowditch 95, but Bowditch 80/84
Volume 2 has it right.
Best regards,
Chuck Taylor
Everett, WA, USA
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