> > To me the tough part is determining the separate impact of the wind and > current on the speed of the kayak and what the required heading correction > to maintain course. Easier than you may think Fred. fold a piece of paper about 1/2 the length of the course into four sections, assuming that your average speed is from 3.5-4 knots. Consider that each segment of paper within the folds represent one knot. transfer to this 'ruler' the speed of the current (i.e. a segment and a half for 1.5 knots), this distance span from your course line in the direction of the current source and draw an axis this current speed length. Determine your estimated average speed (four segments for 4 knots), and use your folded paper 'ruler' to 'close the triangle' from the point you have just generated at the end of the current axis back toward the course line this length of your estimated average speed. the direction of this axis should be toward your point of paddling origin. If you measure this angle on the compass rose, it will represent your new bearing. if you measure between where the 2 axis'you have just generated intersects the course line, you will have your speed made good. I think my explanation is far more complex than the actual practice. gabriel *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced/forwarded outside PaddleWise without author's permission Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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