Benny, do you have any data or research to back up your assertions?
After the famous Fastnet disaster, extensive tank tests were performed to discover what boat designs were more likely to capsize, and which designs are more likely to recover. In storms the real danger to the crew is not capsizing, but capsizing and being unable to recover. The clear conclusions were:
1. When struck on the beam by a breaking wave higher than its beam, all designs will capsize.
2. Once capsized, light boats with a wide beam (a catamaran is the extreme case) will not be able to recover, while heavier boats with narrower beams will recover, giving the crew a good chance to survive.
3. Stability curves for a boat give the best measure of the likelihood of recovery. But the capsize ratio was developed to very closely correlate to the results of stability calculations.
That means that if a boat with a capsize ratio over 2.00 does capsize, it is likely to stay capsized, and eventually sink.
In any case, if boat has a capsize ratio of 2.15, like the First 285, you can be sure that the designer, who knows all this stuff never intended it for offshore work, where an unexpected storm can force it into survival mode with no nearby refuge. Boats like the Cherubini designed Hunter 33 were clearly designed to succeed offshore.
Finally, a boat that is a good design for offshore work must still have good offshore systems. The Pacific Cup Handbook provides a good starting point for defining good standards for the hull and structure, masts and rigging, electrical, navigation, communications, steering, safety, stowage, and sleeping systems. There are a number of good articles and threads on this site about these preparations for going offshore.
Jackdaw, a 40 footer and a 30 footer are equally likely to capsize in a storm with 15 foot breaking waves. I doubt you have any actual statistics to back up your assertion that a 30 footer is 10 times more likely to capsize than a 40 footer. Any study of the storms on the Hobart race or of other heavy weather experience backs up my assertions above.