SCHRS to PN Process

SCHRS stands for Small Catamaran Handicap Rating System and is an ISAF measurement rating system, i.e. parameters of a boat are measured, such as overall length, sail area & number of crew, and the values are entered into a rating formula that produces a rating value that is used in the same way as the RYA PN value to produce a set of results based on a handicapping formula.

The is another well established measurement rating system for multi-hulls called Texel.

I have taken 3 classes that have the best attested validity under the RYA Portsmouth Yardstick scheme as the basis of the calculation of a PN for multi-hull classes without an RYA listed PN.

To produce a Calculated PN for a class with only an SCHR rating multiply the SCHR rating value by 684.

The list below is based on the assumption that the classes have sailed in a standard configuration, if they they are sailed with a different configuration the SCHR rating value should be re-calculated using the formulae embedded in an Excel spreadsheet or available as a facility within Sailwave. Note - SCHRS