A licensed navigational specialist employed to guide a vessel through a specific port, harbour, or restricted waterway.
In practice
Critically, the embarkation of a pilot does not transfer legal responsibility for the vessel from the master: under international and most national law, the master retains command and may at any time countermand the pilot's orders if safety is endangered. SOLAS V/23 governs the safe transfer of pilots. STCW chapter II and the IMO Model Course for Pilotage define the knowledge required, but national pilotage authorities set their own licensing examination standards. The pilot relies on the master and bridge team for vessel-specific information — engine response times, bow thruster characteristics, maximum speed for rudder effectiveness — and effective communication between pilot and master is essential for safe port entry.
Regulatory detail & full definition
A marine pilot is a licensed navigational specialist employed to guide a vessel safely through a port, harbour, approach channel, estuary, or other geographically confined waterway where local knowledge, current conditions, and traffic management considerations demand expertise beyond that of the ship's own officers. National legislation in most maritime nations requires vessels above a defined gross tonnage to embark a licensed pilot when entering or leaving designated compulsory pilotage areas. The pilot boards the vessel via pilot ladder or helicopter transfer and assumes the conduct of navigation.
Critically, the embarkation of a pilot does not transfer legal responsibility for the vessel from the master: under international and most national law, the master retains command and may at any time countermand the pilot's orders if safety is endangered. SOLAS V/23 governs the safe transfer of pilots. STCW chapter II and the IMO Model Course for Pilotage define the knowledge required, but national pilotage authorities set their own licensing examination standards. The pilot relies on the master and bridge team for vessel-specific information — engine response times, bow thruster characteristics, maximum speed for rudder effectiveness — and effective communication between pilot and master is essential for safe port entry.