If you understand adding and subtracting vectors (true wind, boat speed, potentially current and drift), there is nothing simpler.
Marek ------------------------------ Message: 6 Date: Tue, 14 Jan 2014 11:58:06 -0500 From: Josh Muckley <muckl...@gmail.com> To: cnc-list@cnc-list.com Subject: Re: Stus-List FW: Autohelm St4000 how it should work with the GPS Message-ID: <ca+zacrc5m3cjseps5g-7qvuqbftv930lqnqwjn32sklnqtj...@mail.gmail.com> Content-Type: text/plain; charset="windows-1252" Your true wind and apparent wind SHOULD be MATCHED with no boat speed and will only ever be different by as much as boat speed. Most visible close hulled or dead down. Broad reaching you probably won't see too much. You probably just didn't compare when the two wind speeds at the right time. Just as important, if not more so, is wind angle (app vs. true). Josh
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