Guided by experienced instructors, students learn the basics of sailing on board a fleet of 25-foot sailboats based in nearby Hudson River Park. The course is designed for first-timers as well as intermediate sailors looking for a refresher; lessons include weather and navigation, boathandling and sail trim, docking, and basic safety procedures. Upon successful completion of the course, each student earns a Basic Keelboat proficiency certificate from the US Sailing Association. In addition, readings, discussion and a series of field trips will provide an introduction to the history, ecology and politics of New York Harbor.