26’ clipper craft hull repair

Discussion in 'Boatbuilding' started by Joe Earl, Aug 1, 2021.

  1. Joe Earl
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    Joe Earl Junior Member

    I have a 26’ mahogany plywood hull clipper craft with several rotten and soft spots in the hull. I’m wondering if I can sand down to wood repair bad spots and cover entire hull with a second layer of hydra tech marine plywood and epoxy. Would appreciate any advice on this matter.
     
  2. Mr Efficiency
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    Mr Efficiency Senior Member

    Sounds like you would increase the weight somewhat, where are the rotten and soft spots ? The bottom ?
     
  3. Joe Earl
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    Joe Earl Junior Member


    Yes on one side there’s about a 4’ section and other side there’s 3 spots around 8”-12” squares. On the bad side I’ll have a bad spot in the bottom side board as well about 2’ long.
     
  4. Joe Earl
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    Joe Earl Junior Member

    Not sure if the bottom is marine plywood it has a very thin coating that is almost plastic like and there is ovals like construction plywood has. The boat was built in 1986 by a clipper craft company
     
  5. bajansailor
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    bajansailor Marine Surveyor

    Can you post some photos please of your boat Joe, and also photos of the rotten areas?
    What is the plywood hull thickness in way of the areas that have to be renewed?
    Re the thin plastic like coating on the hull bottom - is this just on the bottom, or on the sides as well?
    I wonder if this coating could be a type of epoxy?
    I presume that there is no fibreglass sheathing (ie glass mat and resin) on the hull anywhere (?)
    Rather than applying a second layer of plywood to the hull (this would be a big job, and probably quite difficult), it might be easier to 'just' sheath it with glass cloth and epoxy (especially if it has not been previously sheathed before).
    You would have to ensure though that the wood is dry before hand - how long as the hull been out of the water?

    Edit - is yours like the Clippercraft 26 for sale in this link?
    1982 Clipper Craft 26 Dory in Oxnard, CA https://www.smartmarineguide.com/L58346
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    1986, that is a long time ago, your boat may have reached its lifespan, the main thing is to do a thorough audit of the hull, I would say, the old saying is that paint can hide a multitude of sins, and if it is only painted and not sheathed with anything, removal of the existing paint might tell the story.
     
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  7. Mr Efficiency
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    Mr Efficiency Senior Member

    I'd certainly be looking to strip the outside of paint to a bit above the waterline anyhow. If it looks serviceable, you can then decide to sheath those parts
     
  8. Joe Earl
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    Location: Railroad flat, Ca

    Joe Earl Junior Member

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  9. Joe Earl
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    Location: Railroad flat, Ca

    Joe Earl Junior Member

    she has been out of the water for 3 years
    Never had glass. I would be ok with sheathing her but I’m not sure that’s something I can do. Is there company’s around that still do that? If so does anyone recommend one?
     

  10. Mr Efficiency
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    Mr Efficiency Senior Member

    Are those knots that are telegraphing through the perished paint ? That is a worry. Obviously from the large gaping hole in the bottom, things are not in a good way, which does not mean it can't be repaired, but it will be major surgery. One thing about it, the flat bottom makes it a little easier to progress.
     
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