A ferry (or ferryboat) is a form of transportation, usually a boat, but sometimes a ship, used to carry (or ferry) primarily passengers, and sometimes vehicles and cargo as well, across a body of water.
Ferry designs depend on the length of the route, the passenger or vehicle capacity required, speed requirements and the water conditions.
Water based transport is effective as generally speaking, operating costs of fuel are low and environmental pollution is lower than for corresponding volumes of movement by road, rail or air.
Money is the highest barrier to entry of the ferry business. Historically, government grant programs, such as the $60 million allotted as part of the 2009 Economic Recovery Act, have gone to buy new ferryboats or improve existing ferry terminals.