A measurement handicap rating system with a limited access Velocity Prediction Program used in major North American races.
In the fall of 2004, three major US yacht clubs, the Chicago Yacht Club, Cruising Club of America and Transpacific Yacht Club, joined forces in an alliance called the Offshore Racing Association (ORA). The ORA was formed to support the use of VPP-based handicapping and develop measurement-based handicap systems that provide the fairest racing possible. ORA handle all rule development and marketing, and have contracted with US SAILING to processes measurements and issue certificates. The Offshore Racing Rule (ORR) first started to be used during the 2006 racing season. ORR predicts relative time allowances between boats to permit boats of different sizes, types and ages to compete with the fairest ratings possible.
OFFSHORE RACING ASSOCIATION (ORA) owns and administers ORR (http://www.offshoreracingrule.org/).