Why Oak hull frames (ribs) on my boat while carvel planks are mahogany.?

by Claude
(Canada)

I own a 1966 Pacemaker 34.

I have the original purchaser's owner's manual.

They say the Hull frames (ribs) on my boat are made of oak while carvel planks are mahogany.

My bilge srtingers are made of Mahogany.

Why are the ribs of the hull made of OAK?

most of them need replacement and I wonder if I should substitute them for another type of wood.

I'm at the start of this project and want to make the right call.

Any help will be greatly appreciated.

Claude

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Similar Question
by: Dan

Claude,

I have a 1967 Pacemaker 31 made from White Oak ribs with Philippine Mahogany and asked a similar question a few weeks ago.

If you replace or install sister ribs, be sure to use WHITE OAK, not Red Oak. Apparently, the Red Oak is too porous and will not last.

I would be interested in following the progress of your restoration.

Dan


Oak Frames?
by: Mike

Oak has been used traditionally because of it’s strength and availability.

But they don’t have to be oak, you could use larch, (hackmatack or tamarack) ipi. Or Rock elm.

I laminated replacement frames for my boat using rock elm.


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