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What follows here, is the "Introduction" to two booklets reprinted, on CD, from the series of: "The Power of your Sails" articles, which appeared in THe WiNcH over the past several months . They are an effort to explain in simple terms the factors that affect both Sail shape and Sail trim which dictate boat speed.Have you been following these
excellent articles in The Winch? If not, SharkBytes understands that the CD is
available (for $20 incl. GST) and that they can be purchased directly form The
Winch. THe WiNcH received a lot of requests for the articles and having run out of back copies we though we would go one step further and reprint them on a CD so they could be printed on your computer printer and used chapter by chapter where the articles could do the most good, on the water. Given wind and waters constant variables, all sailors leaving the dock have to adjust their sails for the particular wind and wave condition in which the boat will sail. Our objective in this booklet is to show you the why and wherefore of sails, so that you can understand the underlying principles. On the basis of this knowledge, you will have a set of guidelines that will enable you to adjust to the wind variables successfully. We have only attempted to cover aerodynamics and simple sail design. However, explaining can become sometimes quite technical and detailed. We have tried to use as straight forward and understandable explanations as possible. As you read you will soon come to realize that a small boat or large yacht requires the same sail-handling techniques but with more or less crew weight and strength. One thing to keep in mind as you read our series of articles: a class room is great to be shown one dimensional chalk board illustrations of sail technique or coaches can ride alongside in rubber ducks and point out improvement, but there is no substitute for getting out on the water and changing the sail shape yourself until it becomes second nature. Knowing your own boat takes a lot of time and patience. It takes a steady crew. It takes sail testing. It takes tuning, and if you race, it takes the detailed recording of the sail-handling adjustments that work for your boat. We want you to print out the articles and take them out on the water with you . . .If they get wet who cares you will always have this CD to return to. Ken Deeley
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