An airboat, also known as a fanboat, is a flat-bottomed vessel (jon boat) propelled in a forward direction by an aircraft-type propeller and powered by either an aircraft or automotive engine. Airboats are a very popular means of transportation in the Florida Everglades, parts of the Indian River Lagoon, the Kissimmee and St. Johns Rivers, as well as Louisiana Bayous, where they are used for fishing, bowfishing, hunting, and ecotourism, and in other marshy and/or shallow areas where a standard inboard or outboard engine with a submerged propeller would be impractical.