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TimothyB
01-17-2004, 08:06 AM
Hi Folks,

I was thinking about the problem of sheathing a boat's waterline for ice protection and winter afloat, and I realized I really had not come across any references on how to do that to a smaller boat, carvel planked, which may only have 3/4" planking.

Lets assume what we want to do is go all the way, because we are crazy. We want to sheathe the whole bottom, all the way to 6" above the waterline of a smaller sailboat (say 25 - 30 feet) with something like 3/4" black locust to protect against ice and other sorts of damage.

My first inclination would be to do it like double planking. Apply 'double planking goop' and canvas over the carvel, then fasten the boards with round headed screws from the inside of the boat. with 1/2" of bite into the outer planking, and using non tapered screws, shouldn't that be enough grab to hold em on? Perhaps if I also had four 'through trunnels' per plank. Probably don't need that though...

Any advice or experience with something like this?

--T

On Vacation
01-17-2004, 08:16 AM
Check with Donn concerning the original layup and sheathing on his old garvey hull, he is redoing for the last two years? He removed his and had some pictures of the workmanship on this forum.

Donn
01-17-2004, 08:18 AM
Around here, copper sheet is used for ice protection. Tacked on with copper tacks, and some kind of God-awful tar-like goop between wood and copper.

Donn
01-17-2004, 08:22 AM
You can tell from the photo, how it was laid out.

http://www.imagestation.com/picture/sraid39/pcd12345c4e4dac21b4d09028b5d04bfc/fd0a9c5c.jpg

Bob Smalser
01-17-2004, 10:38 AM
Originally posted by Donn:
Around here, copper sheet is used for ice protection. Tacked on with copper tacks, and some kind of God-awful tar-like goop between wood and copper.Your pic looks just like my Uncle Paul's work on his Garveys, although the planking was different. Soldered copper sheeting with copper tacks over hot tar.

Of course, those commercial work boats from the '40's and '50's with raw-water, dry stack, 4 and 6-cyl salvaged auto engines were built on strict budgets and only intended to last 30 years or so before becoming an ornament in some tidal marsh. Trying to save them at this stage of the game I'm sure can be frustrating.