In nautical parlance, draft or draught is the depth below water's surface of the lowest part of a ship or boat. Draft is usually determined for a fully-laden vessel. It determines the minimum depth of water that the vessel may pass through. Riverboats are often purposely designed with a shallow draft to avoid sandbars and other obstacles. This article is in need of attention. ... Italian ship-rigged vessel Amerigo Vespucci in New York Harbor, 1976 A ship is a large, sea-going watercraft, usually with multiple decks. ... Some boats in a harbor in Miami Beach, Florida A boat is a watercraft, usually smaller than most ships. ... A first class tourist riverboat High speed planing riverboat High speed hydrofoil riverboat Local passenger transport craft Riverboat specialized for cargo truck transport Self propelled gravel barge M.V. Splendid China layout A riverboat is a specialized watercraft (vessel) designed for operating on inland waterways. ... In geography, a bar is a linear shoaling landform feature within a body of water. ...