I am with tcwaltz on this. He does have a "swing keel"! I had a 26' Clipper Marine with 600 lb swing keel and it sure was not a vertical drop down type which is commonly referred to as a "centerboard". Chief
Well Chief RA, I can say with 100% certainty that my DS II DOES NOT HAVE A SWING KEEL!!!!! The CENERBOARD does "swing" since it pivots, but it IS NOT A SWING-KEEL!!! A centerboard that retracts vertically is still a centerboard but is more often refered to as a DAGGERBOARD, like on a Sunfish.
(like I said above, a square is a rectangle, but not all rectangles are squares).
A "swing-keel" is more or less a type of centerboard, but a SWNG-KEEL usually contains all of the ballast for the boat and weighs enough to require a heavy winch to raise/lower. The swing-keel on a typical 22' boat will weigh around 500#, while the centerboard on an O'DAY 222 weighs about 50# and is easily raised/lowered with a simple line by hand.
A typical swing-keel on a 17' boat would weigh 200# to 300# while my centerboard weighs less than 30# and has no effect on the stability of the boat, unlike a swing-keel that has a big effect.
The keel on a Clipper 26
IS a swing-keel because it is the KEEL of the boat, it contains all of the ballast and requires a powerfull winch to raise/lower.
The water-ballasted Catalina 250 also does
not have a swing-keel it definitely has a centerboard, since there is no ballast in the centerboard except to make it heavy enough to not float, the water in the ballast tank provides the stabilizing force and raising or lowering the CB has makes no difference to the stability of the boat, she is just as self righting without hte CB as with it. Remove the keel from the Clipper 26 and she will roll over pretty easy (no more ballast), the boat will also be less stable with the keel retracted than with it down. On my DS II the boat is just as stable with the CB up as she is with it down since there is not enough weight to have any effect.
A "swing-keel" is one type of centerboard, but a centerboard is not a type of swing-keel. (square vs rectangle again)
Centerboard: only enough ballast to prevent floating, may have a small winch to raise/lower on larger boats, but still CB provides little if any stablizing force. Usually swings/pivots to raise/lower.
Swing-keel: Type of centerboard that contains the primary ballast of boat, thus very heavy and needs a strong winch to raise/lower.
Daggerboard: A type of centerboard that raises/lowers vertically through a trunk, does not pivot to raise/lower. (If heavily ballasted, it would be a retractable-keel or more often refered to as a "drop-keel")
I used to sail a 1970 CAL 21, which had a "swing-keel" that had a 360# lead bulb at the lower end. There was a trailer-type winch to raise/lower the keel and no other ballast in the boat. There was a big difference in the stability of that boat with the keel down and locked versus when the keel was retracted for haul out. BIG DIFFERENCE. Again, NO difference on my DS II with the CB down or Up.
O'DAY built exactly
ZERO swing-keel boats and made that point quite strongly in their literature.
Now ,let's all get back to the original question about any feelings about the early 1980's O'DAY 28.