Ventilated Bilge Keels

Discussion in 'Boat Design' started by Steelfloats, Oct 27, 2012.

  1. Steelfloats
    Joined: Feb 2008
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    Location: usa

    Steelfloats Junior Member

    While researching bilge keels in the archives, I came across this thread regarding ventilated bilge keels:

    Seems that ventilating bilge keels will provide more roll dampenning. That got me thinking about foil (asymmetrical) bilge keels. Since the purpose of a foil keel is to provide lift, if you ventilated it, wouldn't the pressure differential on either side of the foil cause the foil to stall as the water flowed through the keel due to the deltaP? If this is correct, does it follow that it only makes sense to ventilate symmetrical keels? Thx in advance. And thx to everyone who contributed to all those interesting threads in the archives about bilge keels. I'm learning a lot.
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