Wood boat deck

Discussion in 'Boat Design' started by Travis Grauel, Mar 8, 2020.

  1. bajansailor
    Joined: Oct 2007
    Posts: 953
    Likes: 246, Points: 43, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

    Assuming that all of your joints are good then the plywood and the oak frames should contribute all the strength that is required, as your scantlings do seem to be relatively hefty.
    I think I would be looking at a layer of cloth (I don't know the numbers offhand) with epoxy on the topsides, and two layers on the bottom and the transom.
    Maybe a bit more on the transom if needed? I don't think you have fitted it yet (?) - is it going to be two layers of 1/2" thick ply? Maybe add a reinforcing knee / frame on the centreline as well?

    Edit - a PS - re the hull bottom panel already fitted, I am wondering Travis how easy it was to wrap the plywood around the frames in way of the bow - did it wrap fairly easily, or did you have to torture / force it?
     
    Last edited: Mar 8, 2020
  2. Travis Grauel
    Joined: Jan 2020
    Posts: 34
    Likes: 2, Points: 8
    Location: Maryland

    Travis Grauel Junior Member

    Thanks for the advice...the transom is 3 layers of 1/2 epoxied 3 times each and then laminated together and epoxied 2 more times fastened to the last team of the boat...the panels were TERRIBLE to bend but did require some persuadeing 2 guys a lot of screws and a lot of clamps but was manageable ...I had my doubts
     
  3. bajansailor
    Joined: Oct 2007
    Posts: 953
    Likes: 246, Points: 43, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

    I must admit that I am not surprised to read that the bottom panel was terrible to bend around the frames in way of the bow.

    Did you design the vessel yourself, or did you buy plans? If the latter, do you have a link to the design?
     
  4. Travis Grauel
    Joined: Jan 2020
    Posts: 34
    Likes: 2, Points: 8
    Location: Maryland

    Travis Grauel Junior Member

    Just 60 year old prints drawn on a peice of plywood my great grandfather drew them
     
  5. gonzo
    Joined: Aug 2002
    Posts: 14,281
    Likes: 589, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    I would say that for abrasion protection and waterproofing 10 oz cloth will work well. Something like this will give you a finish without too much weave showing. It will need less filler and sanding than a coarser cloth like roving.
     
    bajansailor likes this.
  6. Travis Grauel
    Joined: Jan 2020
    Posts: 34
    Likes: 2, Points: 8
    Location: Maryland

    Travis Grauel Junior Member

    Just 1 layer not counting joints?
     
  7. gonzo
    Joined: Aug 2002
    Posts: 14,281
    Likes: 589, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Yes, it will be enough. The plywood is quite thick so it doesn't need to be a structural reinforcement.
     
    fallguy likes this.
  8. fallguy
    Joined: Dec 2016
    Posts: 2,989
    Likes: 333, Points: 83, Legacy Rep: 10
    Location: usa

    fallguy Senior Member

    Yes. Make sure to precoat or the light cloth WILL get drysucked. You might consider coating and curing and sanding to avoid any outgas troubles. I also recommend Silvertip for same reasons.
     

  9. messabout
    Joined: Jan 2006
    Posts: 3,045
    Likes: 233, Points: 63, Legacy Rep: 1279
    Location: Lakeland Fl USA

    messabout Senior Member

    Your boat appears to be built robustly enough to withstand a nuclear attack. I suspect that she is going to be on the heavy side.

    The pictures suggest that it is a displacement boat with no ambitions for planing. The 30 hp engine is more than she will need. The big engine does give you the advantage of running it at a very moderate pace.

    Good luck with your project. Do keep us informed about your progress.
     
    bajansailor and fallguy like this.
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.