Ferries are divided into categories mainly on the basis of purpose.
The main types of Ferries are:
Hydrofoil
The hydrofoil ferries provide an added advantage of sailing at higher speeds, thus facilitating commuting faster and easier. Hydrofoil have even enabled ferries to move faster than some hovercrafts. Due to this they now compete even the fastest trains running across English Channel. They are the ultimate solution for places suffering from mass tourism.
Catamaran
This is also a kind of high speed ferry used mainly in Scandenavian and European countries. They are used for transporting both, passengers and vehicles. They are generally of large capacity and many of them use waterjet propulsion. They are generally larger than Hydrofoil.
Ro-Ro
As mentioned earlier, these ferries designed specifically for transporting cars and other vehicles in an easier and faster manner. The design is such that a car can be directly drove in and out with absolute ease.
Cable Ferries
Cable ferries are short distance ferries that are propelled and steered by cables attached to the shore. Some ferries are even human powered from a boat or a ship. They are also used in rivers and lakes. In some countries they are known as "Punts"
Docking
These are specialized ferries used for docking road transport vehicles or rail cars. They have ramp or rails made on the ferry itself. The structure that acts as a wave guard can also be lowered and elevated in order to align with the fixed ramps or rails on the ports, thus enabling an easy loading and unloading of vehicles and rail cars.

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