Canoe with square bottom hull vs rounded hull

Discussion in 'Hydrodynamics and Aerodynamics' started by JosephT, Feb 11, 2019.

  1. tlouth7
    Joined: Jun 2013
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    tlouth7 Junior Member

    Surely this is not possible to achieve? A square bottomed boat will have BWL = Beam whereas for a round one BWL < Beam. Also for the same "top view" and depth (profile) surely the square bottom must have greater displacement?
     
  2. fallguy
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    fallguy Senior Member

    Y knot?

    The square sided is as you say and the round bottom doesn't become round until below the waterline.
     
  3. tlouth7
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    tlouth7 Junior Member

    Okay I guess that solves the first paradox but not the second.
     
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  4. fallguy
    Joined: Dec 2016
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    fallguy Senior Member

    If the beams are equal, the displacement can be made equal by varying the hull depth below the waterline in the y plane.

    I apologize in advance, but this discussion has already taken place here.
     
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  5. tlouth7
    Joined: Jun 2013
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    tlouth7 Junior Member

    Sure, I guess I wouldn't consider that to be the same profile.
     
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