A swift pirate ship is composed of a CORSAIR, a PLANK, and a REAR. A CORSAIR is a type of pirate ship that was used in the Mediterranean Sea during the 16th and 17th centuries. It was characterized by its long, narrow hull and its speed. A PLANK is a long, flat piece of wood that is used to construct a ship's deck. The REAR of a ship is the back end, which is usually the highest point of the ship. Together, these three components make up a swift pirate ship.