Dear Racers, Due to Windsor Yacht Club needing to pull its race marks for the season, our normal Mark B will be replaced for the Frostbite Race with Mark X, a green inflatable buoy located just inside U.S. waters, approximately 300 feet from the location of Mark B used in normal GPSC race courses. Please see the amended sailing instructions on the Frostbite Race GybeHub page for the updated approximate location of temporary GPSC Mark X. Please be sure to review the amended instructions prior to racing.