How do ferries work?

[plutonick 0]

There is a Ferry (actually 2) in TGS, which is operated by one person. How does this work?

I assume it's not a boat, but a floating platform. The 'operator' can't possibly row the thing, can he? Nor can he use a sail in a river going back and forth.

Is it operated by pulling a rope runs that vertically the river and is somehow tied to the opposite banks of the river?

[Dave Allen 1]

plutonick said:

 

Is it operated by pulling a rope  that runs vertically the river and is somehow tied to the opposite banks of the river?

 

 

Yes.

Probably with the help of the occasional strategic punt.