Pt-boats (torpedo boats) are some of the most popular subjects when it comes to boat models. made famous by kennedy’s pt109 service in wwii, these boats were high powered (3 packard v12’s !) and attacked shipping and protected our ships during the war.. A pt boat (short for patrol torpedo boat) was a torpedo-armed fast attack craft used by the united states navy in world war ii.it was small, fast, and inexpensive to build, valued for its maneuverability and speed but hampered at the beginning of the war by ineffective torpedoes, limited armament, and comparatively fragile construction that limited some of the variants to coastal waters.. 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 part, please confirm dimensions and information given here for yourself if errors cannot be tolerated..