In the pre-dawn hours and many other times of the day, local pilots safely guide cruise ships and cargo ships into BVI ports. The pilots provide local knowledge to the ships' captains to ensure safe arrivals and departures. In order to do this, it requires the pilot to climb from one moving vessel to the other. While this maneuver is taking place, the pilot vessel must maintain speed and stay parallel to the ship, allowing the pilot's safe transfer from one vessel to the other. They make...
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.