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Lock (water navigation) - Wikipedia
Lock (water navigation) - Wikipedia
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Canals and inland waterways - Locks, Navigation, Engineering | Britannica
Rideau Canal - What is a Lock? (animated)
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The Largest Lock Systems in the World - WorldAtlas
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The Genius Technologies Behind Panama Canal Locks Moving World Largest Ships - YouTube
How does a lock work - Saint-Ours Canal National Historic Site
Erie Canalway National Heritage Corridor :: Canal Locks and Structures
