Fishing boats are an important part of the fishing industry. Trawlers, smacks, and dories are three types of fishing boats commonly used. Trawlers are large vessels with a wide net that is dragged along the ocean floor to catch fish. Smacks are smaller boats with a single mast and a sail that is used to catch fish in shallow waters. Dories are small, flat-bottomed boats that are often used for inshore fishing.