Join Date: Aug 2008
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I don't think it is simple as all that. The IOR rule went through many revisions. The early boats tend to be a little less radical than the mid to late 80s designs. No way you are going to crew a mid 80s Farr 1 ton with a short crew and it was a fractional rig. Remember as designers figured out the nuance of the rule they designed to beat it. IOR bumps where put in there to fool the measurement process. The boat appeared to the rule to be slower than it was. Was it faster than a fair hull, no. Late in the rule boats were designed to go like banshees upwind and downwind because that is what a lot the racing evolved to. IOR racers of that era were reaching pigs because they tended to be beamy for form stability and they slowed down as they heeled on a reach and the water line shortened.
Lots of good production boats of that had an IOR flavor to their design. They weren't competitive with the purpose built boats and faded from the race scene. Sabre 38-1, Sabre 34-II, Tartan 37, C&C 37 etc would fall into this category.
Bottom line is that Jeff is right. A friend of mine tried to convert his Frers 39 to a cruiser. He shortened the keel, added wings and a bulb, retractable sprit. etc. It never worked out the well. The rig was too big and spindly. He needed to keep the runners, no deck lockers, little storage, high loads, expensive sails etc . The list is endless. Bottom line is that you are better finding a cruiser/racer from that era and fixing it up.
For the record I raced on these IOR boats at one time or another: Farr 37, Farr 40 1ton, C&C 3/4ton, Frers 39, Frers 50, C&C 39, J-34, DB-1 and a few others I can't remember. I wouldn't want to cruise any of them today.