The diagram illustrates the process of how a canal lock operates to move boats between different water levels.
Overall, the process consists of four main stages, beginning with the boat entering the lock chamber, and ending with the boat exiting the chamber.The system works by opening and closing gates depending on the water level.
Turning to the details, at the first stage of a canal lock process, gate opens in front of the boat to enter it into the chamber.After that, boat enters to the lock chamber and stay there while the level of water becoming the same as the inside of chamber.The gates nessesarily are in need to be closed to align water level.
Once the water levels become equal, on the third stage of this operation, second gate is opened.The boat is then able to exit the chamber and continue its way on the other canal.Finally, the gates are closed behind the boat,completing the process.
