transport and machinery > maritime transport > canal lock > canal lock: side view image

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See canal lock: side view in : french | spanish

Watertight door or pair of doors made of wood or metal that open when the water levels between the lock-chamber and the upper level are the same.

Watertight door or pair of doors made of wood or metal that open when the water levels between the lock-chamber and the lower level are the same.

Part of the lock at the upstream end of the lock-chamber.

Central part of the lock where the water level is raised and lowered depending on the heading of the ship.

Part of the lock at the downstream end of the lock-chamber.

Natural current moving down the grade from upstream to downstream.