A vessel was proceeding from anchorage to berth under pilotage. Two tugs were providing assistance; one was made fast aft and the other was used for pushing where needed.
The pilot was communicating with the tugs in the local language, which the Master did not speak. As the vessel proceeded, a second (docking) pilot boarded the vessel and quickly took over from the first pilot.
The change of pilot happened at a critical stage while the vessel was turning in a basin prior to entering...