Study plans are available for some of these designs – remember a study plan gives you more details and a wood materials list usually on two a1 sheets. 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. A scow, in the original sense, is a flat-bottomed boat with a blunt bow, often used to haul bulk freight; cf. barge. the etymology of the word is from the dutch.