Geometry of Bilge Keel?

Discussion in 'Education' started by ahldjk, Apr 18, 2014.

  1. ahldjk
    Joined: Apr 2014
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    ahldjk New Member

    It is Seen that Bilge Keel doesn't extend beyond Moulded Beam and Moulded Hull of ship?
    I believe that the reason for the same is Bilge Keel extending beyond the mentioned length would not be able to dissipate Roll energy by viscous drag or would be ineffective.
    Does someone have better explanation or reason for Geometry of Bilge Keel.
     

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  2. JSL
    Joined: Nov 2012
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    JSL Senior Member

    to clear keel blocks & side shoring when dry-docked. Check the Docking Plan on any ship.
     
  3. gonzo
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    gonzo Senior Member

    I agree. If they are lower than the bottom the bilge keels would have to support the weight of the vessel when grounded too.
     
  4. rwatson
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    rwatson Senior Member

    Sometimes on purpose
     

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  5. Steve W
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    Steve W Senior Member

    A good bilge keel design doesn't require any blocking or shoring when on land.
     
  6. rwatson
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    rwatson Senior Member

    It ALWAYS needs blocking or shoring on land if you are Painting !
     

  7. Steve W
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    Steve W Senior Member

    most bilge keel designs ive seen sit very nicely on the 2 keels and rudder skeg, no jackstands or cradle required. Sure you would still need to sit on some blocks if you wanted to paint as much as possible of the bottom of the keels but that's about it. I once built a cold molded Alan Wright Tracker 7.7 design which had bilge keels as an option, i built the fin keel version though.

    Steve
     
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