How has beam of the boat and righting moment of trapezing crew been introduced?
This has been applied as a “Power Factor”, applied in a similar way to the existing “Board Correction”. The power factor is derived from the relationship between the righting moment and heeling moment of the boat. The Heeling moment takes into account the white sail heeling moment, the spinnaker heeling moment and the relative “importance” of the spinnaker heeling moment in cat racing. The Righting moment takes into account the number of crew trapezing, the beam of the boat and the presence of non-trapezing crew assumed to act at the boat’s beam (ie hiking).
