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    Re: Set, drift, and leeway
    From: Bill B
    Date: 2006 Jan 28, 20:53 -0500

    Eddie wrote
    
    > you usually have a "polar diagram" for the vessel, giving you a
    > speed through water for each wind angle. With this you can optimize
    > for maximum speed towards destination. This is what tactics software
    > does.
    >
    > The hard part is getting this polar diagram correct for the boat
    > and crew in question to optain useful results.
    
    Thanks.  Understand the above.  Without a computer, sensors, and software it
    falls into the category of traditional navigation ;-)
    
    Even with polar diagrams it looks like a case of doing multiple "what ifs"
    to determine a course that would allow one to sail along the intended track
    (that being a straight line from departure to destination if possible) after
    compensating for set, drift and leeway.
    
    As a sidebar, I 42ed the question so sorry for any misinterpretations. The
    goal is to sail a straight line along the intended track, and I should have
    stated "...to solve similar problems?" as opposed to "...to solve this
    problem?"
    
    Bill
    
    
    

       
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