Why should you wait for the lock attendant's signal before exiting the lock?

Waiting for the lock attendant's signal before exiting the lock is crucial for ensuring safety. The lock attendant is responsible for monitoring the movement within the lock chamber and has a comprehensive understanding of current water conditions, the status of the lock, and the arrangement of other vessels. Their signal serves as a communication method that informs boat operators when it is safe to exit the lock, thus minimizing the risk of collisions or accidents.

The safe exit of boats from the lock is dependent not just on the conditions inside the lock, but also on potential traffic approaching the lock from either side, as well as environmental factors like current, wind, and visibility. By waiting for the lock attendant's signal, boaters can confirm that the area is clear and that it is indeed safe to proceed. This practice helps prevent mishaps and ensures a smooth transition for all vessels involved.