OT16 - ply bottom and strip plank on top?

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madtom
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OT16 - ply bottom and strip plank on top?

Post by madtom »

Just started on the Otter 16. I know we're supposed to build to plans and not start messing with things. But I can't help but wonder.... would it be a huge mistake if the bottom half of the boat were stitch and glue and the top panels were strip planked (and covered inside and out)? This would be painted below the waterline and left bright above.
I guess I'm wondering how much it would affect the strength of the hull?

Also, I don't know if it matters, but no sailing. Just rowing and putt-putt-putt with a little 2 horse at idle speed.
Has anyone tried this?
Thanks for any advice at all.



jonnymac
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Re: OT16 - ply bottom and strip plank on top?

Post by jonnymac »

I can’t give you a technical answer, and I would be really interesting to see the build! We love some pictures around here 😀

TomW1
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Re: OT16 - ply bottom and strip plank on top?

Post by TomW1 »

As long as you build the the stringers, frames and hull up to the plans the deck and any thing else like deck and insides can be built how you want how you want it.

Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

madtom
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Re: OT16 - ply bottom and strip plank on top?

Post by madtom »

Thanks for the heads up Tom. So it sounds like a definite no, on using plywood stitch and glue for the bottom 2/3 and strip planks for the top 1/3 of the hull sides.
Shoot thats too bad. I think it would have been gorgeous.
Thanks for the help.

jonnymac
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Re: OT16 - ply bottom and strip plank on top?

Post by jonnymac »

I wonder if you could veneer them on top of the existing construction method to the outside. so you could get the looks, but still retain original strength.

Fuzz
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Re: OT16 - ply bottom and strip plank on top?

Post by Fuzz »

I have been told the bottom supplies the strength, all the sides do is keep the water out. I know this is not totally true but it does point out what is under the most strain. Before I gave up on this dream I would get the final word from JM.

jonnymac
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Re: OT16 - ply bottom and strip plank on top?

Post by jonnymac »

I would sketchup where exactly you are thinking of making the material change. so its easier to see your intentions. I think you’ll get a more educated response.

silentneko
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Re: OT16 - ply bottom and strip plank on top?

Post by silentneko »

The 2 materials will flex at different rates and have different strengths/weights. I would just do the whole built out of strips then paint and bright finish where you want.
Built: 15ft Skiff, 16ft Skiff, Modified Cheap Canoe, and an FS17.

jonnymac
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Re: OT16 - ply bottom and strip plank on top?

Post by jonnymac »

thats a really good point. the forms needed to do the strips, are different thickness than the ply forms too.

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