lock , **
lock chamber

Then it led the way from the lock chamber into the corridor.

Suddenly there is a ring on the main lock chamber of the segment.

Over a mile long with four lock chambers, the canal was finished in 1796.

There is one lock chamber on the left descending bank of the river at the dam.

Each lock chamber was 13 feet wide by 65 feet long.

The lock chambers contain no water and the area is open as a local park.

Earth was then excavated from between the inner pair to form the lock chamber.

The lock chamber itself must have been five hundred meters long and nearly fifty high.

Were it done in one lock chamber, the water volume lost would be three times as much.

At inauguration day, the lock chamber is filled from the lake, once.