The CRF (Classic Rating Formula) was developed as a measurement rating system for the use in racing varying types and sizes of traditional, full keeled, boat designs. Generally based on the old CCA rule it was first used for the Opera House Cup and then later for the remainder of classic events in New England.
Over the years, as the classic community has grown, adjustments to the CRF have been made to accommodate different boats. However, there were still inequities, concerns of objectivity and a lack of transparency in the CRF. In 2016 the Classic Yacht Owners Association (CYOA) formed a technical committee to review the various rating alternatives, including PHRF, Europe’s CIM, an ORC VPP-based system, and the Classic Rating Formula (CRF) that has been used to score classic events in New England for several decades. The group quickly agreed to focus on CRF. The CYOA Technical Committee recognized that current CRF ratings do reflect the real world performance potential of some yachts within classes of similar sizes and types adequately. However, the Committee also recognized that there are notable exceptions, that there have been complaints from owners about the lack of rule transparency, and that there are fundamental flaws in the current CRF formulae.
As a means of addressing the shortcomings in CRF as listed above, the Committee developed a comprehensive reformulation of CRF that has been informally dubbed ‘CRF MkII’. The formulae underlying the MkII proposal are based on the CRF’16 data requirements.
A CRF MkII rating continues to be based on owner supplied measurement inputs and is not determined by past or subjective performance criteria. A CRF MkII rating is expressed on the certificate both in decimal feet and in seconds per mile. With the development of the CRF MkII, and with continual review by the Technical Committee, we expect CRF ratings will be more accurate, objective and transparent.