Oh, yeah, and JM, here's where I get pedantic. Heh, I think someone else on the daysailer forum was saying the same thing...
Our boats have a centerboard/keel combination. Our centerboards aren't ballasted. A swing keel is just like a centerboard, but it is a ballasted centerboard. The Precision 18, 21, and 23 all have centerboard/keel combos like our O'days. I think the original Catalina 22s have a swing keel. Much more PITA, because you need a winch to lift the swing keel, whereas on our O'days and Precisions, we just pull it up with a line. And we have fixed ballast.
Our boats hold the ballast in the stub keel, and the centerboard swings down out of the stub keel.
On my 15 foot dinghy, it's just a centerboard, no ballast. And on a boat like a Laser or a Sunfish, it's a daggerboard, because it doesn't pivot, it just slides directly down into a trunk, like a dagger going into a sheath.
Then, there's the lifting keel. That would be a ballasted keel that goes up and down in a trunk, a lot like a daggerboard. You can find them on boats like the West Wight Potter 19, the Macgregor 26, a Hobie 20, and a whole host of other racing type keelboats such as the new Left Coast Dart.
Glad you found Trinkka, Joe is a regular poster here... I guess I didn't spell that out well enough!
Brian
