The speed of a sailboat cannot be set at will, like that of a motorboat. It depends instead on sail configuration, heading relative to the wind direction, and wind speed. These dependencies constrain passage planning and execution. For each sailboat, the information about its possible speed in various conditions is collected in a polar diagram. In this class, building heavily upon the skills learned in "Fundamentals of Marine Navigation", you will learn how to construct a sailboat's polar diagram and integrate its information on speeds with the use of a course plotter for passage planning and course correction in the presence of a current. Each class involves a practicum and 2 -4 hours of homework weekly. A syllabus is available upon request. A $20 materials fee for a polar diagram and handouts is payable to instructor at first class. PLEASE NOTE THAT "FUNDAMENTALS OF MARINE NAVIGATION" IS A PRE-REQUISITE, and tools purchased in prior class will be used in this class. First class is held in the library at Platt Middle School.