Mardyck Lock Acts as Salt-Water Barrier

by Ch. Blanchet, Engr.; Sogreah, Grenoble, France,
B. Quetin, Engr.; Sogreah, Grenoble, France,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1972, Vol. 98, Issue 4, Pg. 561-567

Document Type: Journal Paper


The Mardyck lock provides access for inland waterway traffic from the Dunkerque docks to a navigation canal. But at Dunkerque the canal is below sea level and intrusion of sea water into the freshwater canal must be prevented. This lock is the first to be constructed to a new design principle and assures complete exchange of water contained in the lock and takes advantage of specific gravity differences between freshwater and salt water.

Subject Headings: Canals | Salt water | Locks (waterway) | Fresh water | Inland waterways | Docks | Navigation (waterway) | Sea level

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