Considerable power needed with several engines and jet units or propellers and rudders
Fuel consumption usually much less than the total consumption of the vehicles carried
Flexible route, needs only a ramp
Qualified skipper needed
Survey and maintenance needed from time to time.
No interference with river traffic
Can operate over varying depths
Requires skilled steering and can be hard to dock in extreme conditions
Has much interest to tourists
Much cheaper capital cost than comparable bridging. Bridges need maintenance too!
Only one medium power engine required, and no rudder. Uses a positive drive with no slippage.
Fuel consumption even better, about 25% of that of the conventional ferry
Needs a ramp and cable(s)
Less qualified skipper needed
Survey and maintenance needed including a new cable every few years, which takes one day.
Radar not essential
Very slight interference with river traffic because of the taut cable in front of the ferry when moving
Depths must not be too great
No steering required and can operate in almost any conditions
Has even more interest to tourists
Much cheaper to build and to operate than ordinary ferry
Comparison of Conventional and Cable Ferries
Charts showing the present and shortened ferry routes. Note that with the shorter route the depths are much less at the North end, giving the possibility of using an energy-