: How about Beech Wood?
: Would it serve the purpose? I was told I can get beechwood in full length.

I think that beech would be heavier than pine. I've never seen it used in boats here in Ireland. I think the pine would be batter. It will last long enough if it is let dry out between uses. If it is for fresh water use, put tung nut oil on the pine. After it is glued to the frames if you are gluing it together.

Hope this helps
Mike Savage
South West Cork