06-20-2008
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Telstar 28
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Join Date: Mar 2006
Location: New England
Posts: 43,315
Rep Power: 11
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A swing keel is just a heavily weighted centerboard generally. A lifting keel is a totally different beast. Swing keels and centerboards serve much the same purpose, in the same way, with the swing keel having a bit more to do with righting moment than an unweighted centerboard would.
This photo is of the lifting keel used in a Tide 28 sailboat.
My boat has a centerboard, which is made of wood. It is buoyant and must be held in the down position.
A Southerly 46RS has a swing keel, which is weighted and in the case of the Southerly RS weighs about 4800 lbs. Functionally, it combines the righting moment features of a lifting keel, with the center of lateral resistance features of a centerboard.
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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