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The hull showed up on the beach with neither.

Back in the 80s a guy set out to cross the Atlantic in his Nonsuch 30.  Somewhere out there he had to be rescued. I’m pretty sure he lost his rig...though that could have happened after the rescue... It floated onto  beach somewhere in the Caribbean basin in Central or South America. The...

There's always the old school option of having the rudder post enter the hull above the waterline. A lot of boats are/were designed for precise stern squat under motion where a portion of the rudder (and post) get used when in motion but are above the waterline when at anchor etc.

Throwback. That's the word I used...as long as this is a game of mincing them. I never compared types. Honest.  I said that in a certain context(intended as AVS)that  today's racers were a throwback to IOR and you added the rest. I initially never mentioned ballast, draft or beam. I'm willing...

You do realize that your critique is about comments I made in the context of a book you haven't read, or no? Any comparison of an IOR boats ballast or draft with a 'modern' deep drafted flat racer is yours, not mine, so I'm not sure how conflation comes into it. You were the one who mentioned...

2 beamy boats and one carries its ballast way deeper. Got that part. Yet strangely you'll not have a problem finding IOR boats with an AVS close to a POGO/IMOCA, or better in some cases.(Though as Zonker mentions, 124 isn't bad) Regarding my keen habit of projecting and conflating, I don't see...

You seem to have difficulty in isolating hull shape as a key variable, so as a learning exercise only.

Like I said, maybe keep ballast out of it to avoid mistaking my explanation for your imagined conflation and have a look at the stability curve of a catamaran. Bye for now.

 And your mistake is not inputing hull shape as one of the key variables in determining AVS, in addition to ballast, displacement and CE, which is why it probably wouldn't be tough to locate various IOR hulls with similar AVS numbers to a POGO. I am happy to be proven wrong for the benefit of...

not sure how to edit: My previous comment should read 'todays trend toward a lower length to beam ratio', not 'higher'. Cheers

Olin Stephens was sorely disappointed in the instability that was bred by designers maxing out the IOR rule, and this is a large part of the book...an investigation as to what went wrong in the years between CCA and IOR. It is not necessarily a celebration of museum pieces, as you call them. You...

It is a great book with some great insights.  The backdrop is the aftermath of the Fastnet, if I recall correctly, and the transition from CCA to IOR and further.  Many, if not most of the insights in that book are totally relevant today. The one outlier I always remember from that book is the...