Pound Lock Navigation

A pound lock is a type of lock used for raising and lowering boats between stretches of water of different levels on river and canal waterways. The basic principle of a pound lock is simple. It consists of a chamber (the "pound") with gates at both ends. Here's how it works:

1. Filling and Emptying the Lock: Water levels are adjusted by filling the pound with water from the higher level or emptying it to the lower level. This is done through sluices (small gates) in the lock gates or in the sides of the lock.
2. Boat Movement: When the water level inside the lock is the same as the water level on the side where the boat is waiting, the gate on that side can be opened, and the boat can enter the lock. Once the boat is inside, the gate is closed.
3. Level Adjustment: If the boat is going up, water is let into the lock from the higher level, raising the boat. If the boat is going down, water is let out of the lock, lowering the boat to the lower level.
4. Exiting the Lock: Once the water inside the lock is at the same level as the water on the other side, the gate at that end can be opened, and the boat can exit.

Navigating Through the Lock

Navigating through a pound lock can be a straightforward process if you follow these steps carefully:

1. Safety First: Ensure that everyone on board is wearing a life jacket and understands their role during the locking process.
2. Approach Slowly: As you approach the lock, reduce speed and be prepared to wait if the lock is not ready for you to enter.
3. Communicate with Lock Personnel: Use a radio or hand signals (if close enough) to communicate with the lock staff. They will give you instructions on when and where to enter.
4. Prepare Lines and Fenders: Have mooring lines and fenders ready on both sides of your boat to protect it from the lock walls.

Entering the Lock

1. Wait for the Green Light: Do not enter the lock until the lockmaster gives you the signal (usually a green light or a verbal command).
2. Enter Slowly: Navigate into the lock at a slow, controlled speed. Be aware of currents and adjust your steering accordingly.
3. Position Your Boat: Follow the lockmaster’s instructions for where to position your boat within the lock.

Inside the Lock

1. Secure Your Boat: Once in position, secure your boat using the lines. Do not tie the lines to your boat; hold them instead, as the water level will change.
2. Adjust Lines as Needed: As the water level rises or falls, adjust your lines to keep the boat steady and away from the lock walls.
3. Stay Alert: Keep an eye on your surroundings and maintain control of your boat at all times.

Exiting the Lock

1. Wait for the Signal: Do not leave the lock until the lockmaster gives you the clear signal.
2. Exit Slowly: Once the gates are fully open and you have the signal, carefully navigate out of the lock.
3. Continue Your Journey: After exiting, keep a safe distance from the lock and continue on your way.

Additional Tips

• Follow Local Rules: Always adhere to the specific rules and procedures of the lock you are navigating.
• Be Patient: Locking through can take time, especially if there is traffic. Be prepared for a wait.
• Environmental Awareness: Be mindful of the environment around the lock. Avoid pollution and respect wildlife.

Remember, successful navigation through a pound lock requires patience, careful maneuvering, and clear communication with the lock staff.