PHRF Reliable Comparison?
I have had a PHRF number of 174 on my Hunter 28.5 since new in 1986. It is important to note that that base rating on the Chesapeake bay assumes a folding prop, a 155% max Genoa, sails in good condition and presumably a clean faired bottom. Sailing against other boats in similar condition with similar equipment and presumably similar crew ability, we've sailed enough close races to consider the 174 a fair rating. Any similar deep draft 28.5 that has sails in mediocre condition, a roller furler, a fixed prop,or a mediocre bottom job will,in my experience, not sail to the 174 rating. A lighter boat (say a J24 at 168-174 will be stronger in light air; while a heavier boat like an Alberg 37 (PHRF of 174)will be stronger in heavy air.