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Subject: Re: Leg 56
From: Dan Hogan (dhhogan@XXX.XXX)
Date: Sun Jul 18 1999 - 11:39:49 EDT
Millard:
I have seen a few small boat sailors and fishermen plot using Magnetic.
But since day one I was taught to plot on charts or plotting sheets
only true course. Then to do TVMDC for magnetic/CC. The reason being
that variation will vary with your position and deviation with your
heading.
[Snip]
>He was working with True Course and I
>had taken the variation from the charts and converted my course to
>magnetic. When I asked him did he consider the variation, he realized we
>had the same course only one was true and the other magnetic. We set the
>auto helm to the course corresponding to the compass course, and to my
>amazement Block Island, RI showed up a day and three quarter later. We
>never touched the helm until the entry into the Great Salt Pond at New
>Harbor, Block Island, RI.
Dan Hogan WA6PBY
dhhogan@XXX.XXX
http://nav.cnchost.com
Catalina 27 "GACHA"
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