Even possible?
Since I also sail the shoal-draft H37C this is a question I have pursued. There seems to be no answer. Maybe John Cherubini has a formula or something from his father's archives. If you search the "Forum Archives" for that exact phrase, stability curve, you will find some earlier discussion. Likewise if you search Sailnet(www.sailnet.com) for the same phrase you will find Beth Leonard's article. I once used that article to create a spreadsheet and compare our H37C to several "better" boats. We come out very favorably. But she only has this to say about "stability curve": "Ballast to displacement (B/D). This ratio captures how much of the boat's displacement is ballast as opposed to hull, masts, furniture and everything else. It has increasingly been viewed as a shortcut measure of stability, although as such it leaves a great deal to be desired and cannot be substituted for stability curves." Then if you also search for "capsize screen" you find much more detail on Sailnet. Most importantly these two articles: 1. Capsize Controversy and 2. Defining Seaworthy. And in the HOW "The Boats" forum they list the H37C as having a capsize screen of 1.91. This is quite good but we don't know for which keel. However I was told that the shoal-draft, which has a longer and heavier keel, is probably at least as good. Now none of this answers your question. But the reading might demonstrate that there is no answer for our old boats.
