A chain ferry is a type of boat that uses a chain to move across a body of water, typically a river or a lake. The ferry is anchored at both ends, allowing it to be pulled back and forth along a fixed route. This method of transportation is often used in areas where building a bridge is impractical or too expensive. Chain ferries are commonly found in regions with high traffic demands, providing a vital link between communities. They can carry vehicles and passengers, making them an essential part of local transport systems. Examples of chain ferries include the Havengore Ferry in the UK and the Kiel Canal Ferry in Germany.