Pt boat plans for the famous pt 109 offered in 1:32, 1:24 and 1:16 scale – buy and download a relatively easy-to-build semi scale blueprint of an elco 80-footer.. Learn how to build a plywood boat. a brilliant idea. you can make a great plywood boat out of one sheet of wood.. Updates. 2017 march 1, pt photos page added. this page has links to pt boat and related images found at the naval history and heritage command website..