Radio controlled model boat plans and model ship plans for free download. 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.. See greg hoffmans schnellboot video. schellboot 1/20th torpedo tubes. schnellboot 1/20th hull updates. schnellboot struts and rudders cast in silicon bronze.