ORR (Offshore Rating Rule)
In 2004, the Chicago Yacht Club, Cruising Club of America and Transpacific Yacht Club, formed the Offshore Racing Association (ORA). ORA is a handicap rating rule owner, manager, and marketer of the Offshore Racing Rule (ORR and ORR-ez) a VPP-based handicapping system for rating sailboat racing. ORA has undertaken the task of developing new measurement-based rating formulas for handicap racing that provides the fairest ratings possible and has undertaken all promotional and developmental tasks associated with ORR and ORR-ez by providing an increased level of manpower not previously seen in offshore racing. ORA has partnered with US Sailing for data collection and certificate processing for ORR processing.
The ORR is able to predict relative time allowances between sailboats to permit boats of different sizes, types and ages to compete with the fairest ratings possible.
ORR is an objective rule and its rating calculations are based on the measurement of all the speed-related features of the competing sailboats. The ORR Velocity Prediction Program (VPP), developed through systematic scientific research calculates the speed potential of each boat at various combinations of wind speeds and course directions to give the fairest handicap possible.
ORA intends that ORR should be a non-type forming, non-development measurement rating rule that fairly evaluates well designed and well prepared boats. It must be clearly understood that ORR is not a development rule, like the other rules, and is not intended for sailors who are looking to “beat” the ORR. In order to discourage attempts to design boats “to the rule”, the ORR VPP’s are of limited access to designers and owners through trial runs of the VPP. ORA updates the ORR Rule Book and revamps the calculations of the VPP on a regular basis to stay current with the latest research and boat design development.
Download the ORR Rule Book: ORR Rule Book 2016
Please visit http://www.offshoreracingrule.org/ to learn more.