Build a large wooden sea skiff plans . these plans are for a 17 ft wooden skiff. the happy clam is the latest of over 65 boats having this unusual hull form. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood. Scroll down this page for many more plans. this a page of links to some favourite free boat plans at intheboatshed.net. they’ve been chosen because they are derived.