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Locks 
(Water Infrastructure and transport.) 
• A lock is a device for raising and lowering 
boats between stretches of water of different 
levels on river and canal waterways. The 
distinguishing feature of a lock is a fixed 
chamber in which the water level can be 
varied; whereas in a caisson lock, a boat lift, or 
on a canal inclined plane, it is the chamber 
itself (usually then called a caisson) that rises 
and falls.
Locks

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Locks

  • 1. Locks (Water Infrastructure and transport.) • A lock is a device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls.