At the moment of truth the boat never really stops as much as it "side swipes" the dock. The attendant jumps to the dock with the rope and slows the boat just a bit with his static-line arrangement.
Note passengers on the front and rear of the boat jumping ashore in their business suits.
Also at this time passengers on the dock jump on to the boat - which never really comes to a complete stop.
Bangkok, April 1996.