is it a lifting keel or a swing keel??? Not the same thing imho. A swing keel is essentially a glorified, weighted centerboard. A lifting keel is not.
There has been a debate onboard regarding when to use the drop down keel on our 32 ft shoal draft cruiser.
Position A is always. For lack of the correct descriptive physics it seems to me that the counter forces of the sail and keel enable the sail plan.
Position B is that the keel may provide too much drag/resistant foce in light air thereby slowing the boats progress, and to only use it during heavy wind and or large wave action.
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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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Still—DON'T READ THAT POST AGAIN.