Bowrider hull

Discussion in 'Boat Design' started by Ivan53, Jun 11, 2023.

  1. Ivan53
    Joined: Jun 2023
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    Location: Rijeka

    Ivan53 Junior Member

    Everyone thank you for the replies
     
  2. Ivan53
    Joined: Jun 2023
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    Location: Rijeka

    Ivan53 Junior Member

    OK so I found a 22 degrees deep V hull lines plan, and I modifeid the shape of the hull to so it has the space in the fore of the boat. It was initialy very sharp so I wonder if this would work. I ll smoothen the lines as well as do the lift/weight calculations later. Just your initial toughts.
     

    Attached Files:

  3. bajansailor
    Joined: Oct 2007
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    Location: Barbados

    bajansailor Marine Surveyor

    Initial thoughts.....
    What was so wrong with the 22 degrees hull lines plan that you found, to make you want to modify to the shapes shown above?
    Can you post a copy of the lines plan that you found, for comparison?

    It looks like you will have a lot of weight of boat structure as well as additional weight of people filling the bow cockpit, but you have very little buoyancy in the bow to support all this - are you hoping that this will be compensated for by lots of weight at the back end in the form of the engine(s) and outdrive(s)?
     
  4. Ivan53
    Joined: Jun 2023
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    Location: Rijeka

    Ivan53 Junior Member

    They just have no space for people in the fore. I ll change the lines... its kinda obvious now that look at it again hahah
     

    Attached Files:

  5. Ivan53
    Joined: Jun 2023
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    Ivan53 Junior Member

    The red lines are the changes made to free up the fore
     
  6. willy13
    Joined: Jan 2022
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    Location: Canandaigua NY

    willy13 Senior Member

    Maybe play around with an axe bow to maybe increase buoyancy up front. Just a thought because I love the look of an axe bow, have no idea why.
     
  7. Ivan53
    Joined: Jun 2023
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    Location: Rijeka

    Ivan53 Junior Member

    I made it a bit wider, it looks like it has a beak beacuse of the axe bow ( if it had the form like yellow line shows it would look more "normal"). I wanted to make a wave piercing form and I think the lift to weight will be fine like this . I know this not the proper way to make hull forms but for the project it should do.
     

    Attached Files:

  8. baeckmo
    Joined: Jun 2009
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    baeckmo Hydrodynamics

    Have you ever been at sea in a planing hull, rough weather and following waves? Do you understand what happens when your hull dips her nose in a wave, and what that means to course stability?
     
    bajansailor likes this.
  9. Ivan53
    Joined: Jun 2023
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    Location: Rijeka

    Ivan53 Junior Member

    No I have not, I was on an inflatable boat once, and there were no waves... Well I can imagine its not a good thing. If you can send me some literature or point me in the right direction to correct my form I would appreciate.
     
  10. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    One common modification of the bow is to make a flat section. The square bow (at the top only) allows for an increased deck area and sitting space.
     

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