How can I simplify my house boat design for easier construction?

Discussion in 'Boat Design' started by LandFish, Jun 22, 2021.

  1. fallguy
    Joined: Dec 2016
    Posts: 4,628
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    Location: usa

    fallguy Senior Member

    Find out the fuel tank size. Survey it or forget it. If the fuel tanks are too expensive to fill; move on.

    Keep in mind, gonna need some 8 feet of water for that rig. But could be refurbed for maybe 100k usd if you do the work?

    I got about 20k into very modest nav/ chart systems.

    Also, fiberglass lotsa work fair n finish.
  2. LandFish
    Joined: Jun 2021
    Posts: 11
    Likes: 4, Points: 3
    Location: Norway

    LandFish Junior Member

    Yeah, those engines are scary. I think I need to look around more!
  3. LandFish
    Joined: Jun 2021
    Posts: 11
    Likes: 4, Points: 3
    Location: Norway

    LandFish Junior Member

    About hull/shell construction: If I were to build a whole boat myself, could this technique work?

    1. Construct a boat frame with steel studs (those that are usually used in steel frames for houses)

    2. Wrap the steel frame with pallet wrap (like some people do for easy/cheap SOF kayaks)

    3. Add a layer of fiberglass + resin on the skinned frame

    I am pretty sure there has to be consequences for building like this.
    I only know the pros of this technique, but not the cons (which I would like to get input on)

    The pros I see with this technique:
    1. Steel studs are cheaper than wood
    2. It is easy to assemble steel studs into a pretty lightweight and strong frame with just screws
    3. There is no need to make a mold to fiberglass the boat

    What are the cons of doing this?
  4. bajansailor
    Joined: Oct 2007
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    Location: Barbados

    bajansailor Marine Surveyor

    No. And a double No.
    It 'could' work - but please do not think about going down this route.
    Your hull construction will be only a small fraction of the cost of the completed vessel - and the hull is not somewhere to try to scrimp and save. You need to have a good design for your hull (or hulls if a cat) and they need to be strong enough and seaworthy enough (re coastal passages) for your intended usage.

    Are those steel studs galvanized? Probably not, if they are intended for house construction, where they never see any sign of salt water or even rain water.
    They will not last long in a salty environment.
    And you cannot shape them into a nice boat hull shape very easily.
    You could build a rectangular barge with them, that will act like a brick at sea re seakeeping, and then you can watch it rust away happily.
    Hence it would be better to stick to tried and proven boat construction methods, using proven hull shapes.

  5. LandFish
    Joined: Jun 2021
    Posts: 11
    Likes: 4, Points: 3
    Location: Norway

    LandFish Junior Member

    Alright thanks for clearing that up for me! I kind of started hyping myself up for this seemingly easy hull construction, its good to hear that its not a good idea, so that I can leave it be.
    bajansailor likes this.
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