JonE said..
I really should try and sail an ior boat in a blow because this stuff is exactly why I don't want one, but it may all be outweighed by the ability to have a hot shower and a cooked meal for under 50K :)
From the article:
so maybe some other bad IOR traits are missing too. IOR and wet is one such trait. This is because the rule favored boats that were narrow forward. This one looks pretty narrow. Pounding in head seas is another. Many IOR boats have flat sections forward of the keel which pound when they get hit by waves, because designers were trying to fool the rule. IOR boats tend also to be beamy, because they need crew weight out on the rail to keep them flat. The beamy midsections tend to make them "squirrely" downwind, as the immersed hull shape gets weird. One thing that the post you quoted ignores is basic geometry. Some IOR boats were flat forward to maximise the forward depth measurements - but a shape that is flat when measured when the boat is upright becomes angled when the boat is heeled when sailing upwind.
If one looks at modern non-IOR boats one sees that they are no skinnier than IOR boats, generally. Compare the Farr 1104 with the Farr Beneteau 36.7 (not an IOR boat) or the current Benny 36. The 1104 is 11.92 ft beam; the 36.7 is 11.33ft wide; the current 36 is 12'6". A Catalina 375 is 13ft in beam. The J/35, just 6" shorter overall than the 1104, is 11.8ft in beam. The J/112 is 11.8. The Pogo 36 is 13.1 beam. So the 1104 is fairly standard in beam.
The guy who wrote the post you quoted claimed that the late IOR boats had tiny mains. That's rubbish. By the late IOR era, fractional rigs with large mains (larger than those of many IMS/IRC boats in proportion) were almost universal.
The IOR boats of the 1104's era were designed for long offshore events, not for hanging around marinas. Arguably that's their major problems - the interiors were designed for seagoing rather than for sitting at anchor.