Early IOR quirks
The Tartan 30 is one of my favorite boats of that era. The were well constructed and sail quite well. While I am not a fan of their rig proportions, they are still well behaved and nice sailing boats. The Contessa 32 has a pretty strong following. Compared to later designs they are pretty slow, cramped and tender but the exchange that for a comfortable motion and pretty high level of seaworthiness. I don''t know the Yankee all that well but from what I gather they did offer similar behavior to the early IOR boats that I mentioned in an earlier post.