{"id":973,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=973"},"modified":"2015-10-16T12:09:10","modified_gmt":"2015-10-16T17:09:10","slug":"centerboards","status":"publish","type":"post","link":"https:\/\/setsail.com\/centerboards\/","title":{"rendered":"Centerboards"},"content":{"rendered":"
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Dear Steve and Linda, heaving read all of your books I would like to thank you for your advice given there. As only one example, we’ve changed our mainsail to an extra-roached, fully-battened one which gave us 1 knot extra speed at all courses, which is a lot for 34 feet. Having a double backstay we don’t see any problems even with 30 cms overlap. <\/p>\n

My question now is: What do you think of centerboards? We are interested in a 43′ Dutch aluminium Koopmans design which has no keel whatsoever. She sports only internal ballast and the centerboard seems rather small (weighing around 400 kg). The boat was constructed for falling dry in the North Sea. She has a long waterline and a draft of 1,20 meters board up and 2,50 m board down. The rudder is fully integrated into the hull and in line with the ship’s bottom, more just like a motorboat. Is the rudder surface of approx. 1,2 squaremeters large enough and the profile (not balanced) effective to steer the ship in a heavy going? <\/p>\n

Thanks for some advice, and have some fun with your grandbaby. Andreas <\/p>\n<\/div>\n

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Hi Andreas: Those are hard questions to answer without seeing the lines of the boat. In general, centerboard boats, especially those without stub keels, depend on a wide beam for initial stability. Wide beam will make the boat harder to steer in general, and it will develop weather helm more quickly with heel than a narrower boat. The unbalanced rudder will also be harder to steer. On the other hand, the shallow draft could be a big advantage, depending on where you are going to be sailing. For heavy weather I prefer a narrower boat with a fin keel. Steve<\/p>\n

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