Guys, unless the physics of the pads on the ro-ro berths have been modelled then you are not really going to be able to use them very accurately anyway. In real life the ferries which use those berths go in at a couple of knots ahead and the pads absorb the impact, if they have been modelled as a solid quay then it will be almost impossible to enter the shoe without doing damage.
The only thing to do is wait and see what is in SSE, I am sure that someone at VStep will have made a berth suitable for whatever ferries are going to be in the game, whether it is entirely realistic in terms of the real life operation of the port or not it will still be a ferry crossing from one port to another which is something which up until now has not been possible.