See greg hoffmans schnellboot video. schellboot 1/20th torpedo tubes. schnellboot 1/20th hull updates. schnellboot struts and rudders cast in silicon bronze. The following images show dimensions for the browning .50 caliber aircraft machine gun as used on ww2 pt boats. these dimensional images represent a best effort on my. Pt boat model boat plans – click image for more information. this is the first sheet with hull templates and ga..