Sailboat building literature

Discussion in 'Boat Design' started by pironiero, May 5, 2020.

  1. Rumars
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    Rumars Senior Member

    Of course you can. But you can also design the structure without any fiberglass (inside or outside). It is your choice as a designer. In order to waterproof the wood it is enough to paint it with epoxy.
    Download and read the gougeon book, things will become clearer.
     
  2. pironiero
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    pironiero Junior Member

    Nah, i want my boat to be light, wood only vuild will require more layers i assume, making it heavier, thats not an option.
    The idea is to make a bluewater capable boat as light as possible without breaking my bank too much
     
  3. Rumars
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    Rumars Senior Member

    That's why I said make a cost study for different scenarios. You know what is important to you and what compromises you are willing to make.
     
  4. bajansailor
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    bajansailor Marine Surveyor

    Pironiero, when you mention 'fibreglass', do you mean epoxy resin with glass cloth, or polyester resin with glass cloth?
    If you want it to be as light as possible, while just using wood and epoxy (ie no fancy carbon laminates) then it would be a good idea to make it a 'sandwich' with a layer of epoxy / glass on each side of the timber core.
    But as per Rumars' suggestion above, do a study first of the cost / weight of the various different possible combinations.
     
  5. pironiero
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    pironiero Junior Member

    It's a resin with cloth
     
  6. gonzo
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    gonzo Senior Member

    Yes you can laminate fiberglass over strip planking. It is a very common method of construction.

    What kind of resin? There are many types.
     
  7. pironiero
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    pironiero Junior Member

    Im thinking about making first layer with strip planks and add 2 more layers of 3 layer plywood crosswise, after that laminate it with several layers of fiberglass with epoxy resin. The main question is-how to calculate amount of layers of fiberglass and its thickness
     
  8. pironiero
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    pironiero Junior Member

    I thought that there are 2 main ones used in boat building, ply and epoxy.
     
  9. gonzo
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    gonzo Senior Member

    There are 3 main families of resins: polyester, vinylester and epoxy. However, each has many different formulations and characteristics.
     
  10. pironiero
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    pironiero Junior Member

    so whats better for price and longevity?
    i assume- epoxy
     
  11. Rumars
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    Rumars Senior Member

    "As light as possible" and "cold molding with plywood over strip planking then fiberglass" do not work together. How big is this boat you plan to design? Lenght, beam, aproximative displacement?
     
  12. gonzo
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    gonzo Senior Member

    Unless you want to learn a lot of math and engineering, I advise you to buy Dave Gerr's book "The elements of boat strength". It has simple formulas to get all that information.
     
  13. pironiero
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    pironiero Junior Member

    15meters, displacement somewhere around 7 tonns
     
  14. pironiero
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    pironiero Junior Member

    alright, thank you
    ---------------------
    i find it very inconvenient that amazon is not able to ship these books to russia
     

  15. Rumars
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    Rumars Senior Member

    I hope you have the money for carbon fiber and a degree in naval architecture with those numbers. Add 3 tonnes and you may be able to do it with russian wood and fiberglass if you are good.
     
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