One thing we're all missing, and I can understand the concerns raised concerning the C-22 swing keel swinging back in a knock-down and allowing the boat to sink. But let's keep this in perspective. Frank Butler designed the C-22 swing keel ~47 years ago. He has built thousands and thousands of C-22's since then, and they are still in production with the same designed swing keel. The vast majority of C-22's are swing keel versions. He has built one of the largest sailboat manufacturing companies in the world. Frank's company, and any manufacturing company, has HUGE product liability issues,(ask Roger MacGregor about lawsuits from flipping boats), and they simply can't afford costly law suits due to inferior or poor designs. Heck, even products with good designs are subject to lawsuits.
I remember many years ago reading about the first C-22 that went down during a race. I believe the C-22 had already been in production maybe ~20 years when this milestone was reached. As I recall, the boat took a knock-down during a race and water filled the cabin and she went down, (as I recall she was re-floated and sailed again). Can the C-22 take a knock down and survive? Absolutely, and most do. Can a C-22's swing keel fall back in a knockdown and allow the boat to turtle? Absolutely. Just last year, we lost two C-22's while racing in Mobile Bay when a sudden violent storm came up. Both boats took violent knock downs, and I know that in the case of Larry's boat, the boat came back up, only to be sunk while being run over by a larger sailboat. But both boats went down with the keels still extended. So yes, the C-22 can sink, and yes there is a slight risk that the keel could fall back in the case of a violent knock down. Anything can and will happen. But the numbers of incidents over many, many years give me great relief in a well designed boat.
I wonder how many C-22's have been struck by lightning, and how many C-22's are out there with no lightning protection?
Don