Here is a video of the ferry type.
Hmmm, well, all that comes to mind is either Enar being able to swim to the ferry*, get on it and start pulling, or manage to throw a rope lasso into the ferry from land and start pulling.
*First tie a rope on herself and somewhere on ground/fellow party member stays back holding so Enar has a way of getting back on land.
Or I guess if Enar's sailor senses see that the old man seems to be able to pull the ferry by himself, she'll just patiently wait.