There are a couple different types of boat locks. Some are on propellers, some on engines, and some one trailers. They are designed to keep anyone from stealing all or part of the boat. Most common have a locking bar used on the engines. There are also flush locks and anchor locks. It all depends on particular area or use.
A boat lock is a thing that lock a boat.
A boat has to wait in a lock for the water to be the right level in a lock.
A lock. A lock raises and lowers a boat to the level of water in the next lock.
A lock raises and lowers the boat to the level of the water in the next lock.
you dont
boat
When approaching a boat lock, the term "approach the lock under full control" refers to the need for the vessel to be maneuvered carefully and at a safe speed to ensure safety for both the boat and the lock infrastructure. This means the captain should be prepared to stop or adjust the vessel's position as necessary, maintaining awareness of the lock's operations and any other vessels present. It is crucial for preventing collisions and ensuring a smooth passage through the lock.
When approaching a lock in a boat, a green light indicates that you should approach the lock under full control. This light signals that it is safe to proceed and that the lock is ready for your entry. Always ensure to follow any additional instructions or signals provided by lock personnel.
Commercial boats
When approaching a lock in a boat, the green light indicates that you should proceed with full control. This signal means that the lock is ready for you to enter, and you should navigate carefully to ensure safe passage. Always remain vigilant for other signals and conditions as you approach the lock.
This is assuming you have to fill or empty the lock you have approached. The water-level has stabilised at the same in both lock and canal in the approach. In fact on manually-operated locks at least, you would not be able to open the gates until the levels are practically the same. And of course, if there is a boat waiting to leave the lock you wish to enter, you give it room to manoeuvre. If the gates are is open in your favour and there is no boat on its way out, then you simply take your boat straight in.
One long blast on the boat's horn or whistle indicates to the river lock attendant that you wish to go through the lock.