more on old IOR boats
Compared to boats that preceeded them they go to windward quite well but compared to the boats that followed them they really are not all that weatherly. They also tend to be a little bit wet compared to a IMS typeform for example.
The thing about the IOR was that it narrowly defined the measurement points on a boat in a way that made it easy for designers to distort the boats to beat the rule. The problem was that it produced boats that were comparatively slow and generally not especially seaworthy. Some of the really early boats like the one we are discussing were still very good boats for their day but a lot happened in the years that followed.
What did you buy?