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The boat enters the lock. 8–9. The boat enters the lock. 3. The lower gates are closed. 10. The upper gates are closed. 4–5. The lock is filled with water from upstream. 11–12. The lock is emptied by draining its water downstream. 6. The upper gates are opened. 13. The lower gates are opened. 7. The boat exits the lock. 14. The boat exits ...
The Pacific-side locks were finished first—the single flight at Pedro Miguel in 1911 and Miraflores in May 1913. [6] The seagoing tug Gatun, an Atlantic entrance working tug used for hauling barges, made the first trial lockage of Gatun Locks on September 26, 1913. The lockage went perfectly, although all valves were controlled manually since ...
The Peterborough Lift Lock is a boat lift located on the Trent Canal in the city of Peterborough, Ontario, Canada, and is Lock 21 on the Trent-Severn Waterway. For many years, the lock's dual lifts were the highest hydraulic boat lifts in the world, raising boats 65 ft (20 m). This was a considerable accomplishment in the first years of the ...
The Kirkfield Lift Lock is a boat lift located in the city of Kawartha Lakes, Ontario, Canada, near the village of Kirkfield. It is designated "Lock 36" of the Trent–Severn Waterway , situated at the highest section of the canal (256.2 m). [ 1 ]
A boat lift, ship lift, or lift lock is a machine for transporting boats between water at two different elevations, and is an alternative to the canal lock. It may be vertically moving, like the Anderton boat lift in England , rotational, like the Falkirk Wheel in Scotland , or operate on an inclined plane , like the Ronquières inclined plane ...
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[2] [3] The locks also have an overflow 'by-wash' at the side, which water runs down when the lock is not open. When a descending boat enters each lock chamber the water level rises slightly and the excess flows via an overflow channel at the side which runs into the main by-wash. [4] The structure is Grade I listed. [5]
Operation of caisson lock Contemporary engraving of the lock at Combe Hay. The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal water levels. It was invented in the late 18th century as a solution to the problem posed by the excessive demand for ...