These kayaks are modern versions of the traditional ones used way up north. The "skin" is a polypropylene fabric; the "frame" is lightweight Port Orford Cedar and steamed oak ribs, held together by "sinew" of waxed thread. Not a single piece of hardware holding this together, except that we added some fancy copper nails on the coaming to engage the fabric. After it's all wrapped and sewn, it's tinted with dye and covered in an epoxy coating to seal the fabric. Paddles beautifully. Weighs 23 pounds.
Here's a link to the forum:
http://www.c-brats.com/viewtopic.php?p=151084#151084.
