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. The model pt boat site original boat redrawn. due to the large number of photo’s and books that i have acquired over the years i have decided to redraw the boat as close to the original as is possible with a view. About. this is a resource site by jeff davidson for the building details of an elco 80′ world war ii motor torpedo boat (mtb) / patrol torpedo (pt) boat with leanings towards a 109 to 138 boat operating in the.