Research on hydrodynamic interaction indicates that if the speed of the ship near a bank is too high, the rudder may be less able to cope with the forces induced and control will be lost. The Nautical Institute highlights this in its latest Mars Report, in which an LPG carrier hit a barge being towed by a tugboat as a result of hydrodynamic forces.
This is Paddy Rooney, Coxswain of the Carlingford Pilot Boat, on the lough which separates County Down and County Louth. The boat operates out of a small jetty at Greencastle - so called after it's Norman castle near the shore and not far from the town of Rostrevor with it's beautiful park and colourful streets. In this film Paddy and his crew rendezvoused with a cargo ship at Greenore Port - which is also a uniquely preserved 1800's railway village .
