What is "when arriving at a navigation lock?

When arriving at a navigation lock, vessels must first contact the lock operator on the designated VHF radio channel to request entry. The lock operator will provide instructions on how to approach and enter the lock, including any required maneuvers or procedures.

Upon reaching the lock, vessels must follow the lock operator's guidance for safely entering the lock chamber. This may involve lining up the vessel with the lock gates, securing lines to bollards or hooks within the lock chamber, and adjusting the vessel's position as necessary to ensure a smooth entry.

Once inside the lock chamber, vessels may be required to adjust their position or secure lines further to ensure safe passage through the lock. The lock operator will control the filling or emptying of the lock chamber to raise or lower the vessel to the appropriate water level, allowing it to continue on its journey.

After passing through the lock, vessels should wait for instructions from the lock operator before exiting the lock chamber. The lock operator will guide the vessel out of the lock and provide any additional information or instructions as needed.

Overall, arriving at a navigation lock requires clear communication with the lock operator, careful maneuvering of the vessel, and adherence to any specific procedures or guidelines provided by the lock operator to ensure a safe and efficient passage through the lock.