Transom thickness 12' fiberglass skiff

Discussion in 'Powerboats' started by biasedmind, Jul 3, 2018.

  1. biasedmind
    Joined: Jun 2018
    Posts: 8
    Likes: 0, Points: 1
    Location: Texas

    biasedmind Junior Member

    What is the recommended thickness or glass weight for an outboard transom? My project is a 12' fiberglass skiff with a clamp on long-tail outboard. The long-tail weighs roughly 150lb. My main questions are:
    • Recommended thickness of laminated plywood layers?
    • Type of plywood? marine vs outdoor rated
    • Weight of glass layers?
    Everybody loves pictures so I've included on of the transom. I do have the section I cut out to minumize the numbers of layers need to build the gap back up. It originally protruded out to add thickness to the transom.

    Joined: Dec 2016
    Posts: 14
    Likes: 2, Points: 3, Legacy Rep: 10
    Location: Texas, USA


    Hello fellow Texan.

    1.5" thick will do the trick on that transom.

    A great alternative to plywood is Coosa Bluewater 26 composite. Same weight as ply, but will last a lifetime in most cases. Not as cheap as ply though.

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.