[Please remove all old content that is not pertinent to your reply including old headers and footers. It's list policy.... this post was modified to meet policy] I think it is also worthwhile to mention here that a GPS cannot measure "heading" since it does not know which way the boat is pointing (leaving aside GPS units with magnetic compasses included). On the other hand, since the GPS can measure "course" it will automatically calculate the standard ferry glide angle for you. When you angle the kayak so that the arrow on the GPS pointing to the next waypoint is aligned with the fore/aft axis of the kayak, you will be applying the ferry glide angle that, given the instantaneous wind and current conditions, takes you to your destination in a straight line over the ground. This may or may not be the optimal path on a crossing with varying current speeds, but it is an alternative when transit markers are not available. Thanks, Mark On Tue, Jun 21, 2011 at 2:05 PM, Craig Jungers <crjungers_at_gmail.com> wrote: > Looking back through my collection of emails I discovered this one; an > email > to which I did not respond. And, Peter, you are exactly correct on all your > definitions (heading, bearing, course, etc.). *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Jun 24 2011 - 14:53:08 PDT
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