There is no other lockage of that file to a given system.

So each trip through the canal, or lockage, means 52 million gallons of water.

The lift will practically prevent all loss of water by lockage under the present system.

The lockage went perfectly, although all valves were controlled manually since the central control board was still not ready.

Hence total lockage for 36,000 tons would be:

This saved money, but meant that ships did not have to pay lockage changes to reach Highbridge.

The flat topography of this area meant that this section of the canal required no lockage.

Even if 150,000 tons of traffic had been carried as Gordon Thomas hoped, the lockage would have represented only 25% of the total.

The locks reduce travel time because it enables large commercial tows to go through only one lockage rather than the three locks it replaced.

Floods of water run off into the lake, overflow Gatún Dam and run out to sea - useless for lockage.

The seagoing tug Gatun, an Atlantic entrance working tug used for hauling barges, had the honor on September 26, 1913, of making the first trial lockage of Gatun Locks.

Having reached Autherley Junction they turned back on the Coventry Canal to use the whole length of the Oxford Canal, avoiding the lockage and industrial scenes of Birmingham.

Turning the ignition key to the OFF position, which will also cut power, but may cause lockage of the steering wheels and will also disable the power steering and the brake assist.

Nevertheless, the saving of water this system would have produced as compared with normal lockage would have been little more than 50 per cent, a benefit that would hardly justify the installation of the lift if water saving was the main object.

The engineer Rennie designed a canal link from the Monkland Canal to the Clyde in 1797, but it involved 160 feet (49 m) vertical interval of lockage and was impossibly expensive; Stevenson prepared a similar scheme later but it too foundered.

As the volume of water required for lockage of the existing traffic was 1,000,000 cubic feet only, it is obvious that it would have been more effective in the saving of water to reduce leakage rather than to concentrate on reducing the passage of water through locks - and much cheaper.

"The Panama Canal being now opened to traffic, there remains for study only one important hydraulic problem-the sufficiency of the available water supply to meet the needs for lockage , for mechanical power to operate the canal and railroad, and for the electric lighting of the Canal Zone."