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. Learn how to build a plywood boat. a brilliant idea. you can make a great plywood boat out of one sheet of wood.. Reference books on pt boat’s. i see slight criticism of some pt boat books on other websites that i think are the best books that i have, so i guess what you may be.