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Old 11-03-2011, 13:30   #1
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Join Date: Nov 2010
Location: Charleston SC
Boat: cal 40
Posts: 89
Curved Dagger Board ?

Dear Multihullers,
What does the arched or curved boards do on these large racing cats and the cup boats? As the board gets horizontal does it create a hydroplane effect? What is the design intent of this? Just wondering, I am a retired Hobie 17 sailor, I love the direction the cup is going.


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Old 11-03-2011, 13:41   #2
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Join Date: Jan 2010
Location: Jacksonville, FL
Boat: Cape Dory 33, 17' Boston Whaler
Posts: 164
The idea is the horizontal portion will provide lift on the leeward hull counteracting the leaning tendency as well as reducing wetted surface. It helps the boat sail flatter and in a sense lighter since the low side isn't forced down into the water.
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