5. New solution: Maréliennes
As tidal turbines do not adapt well to natural sites, we can try to create sites where they can be used in the best possible conditions. The essential aim is to operate in a current with a roughly constant speed of 3.5 to 4 m/s, for strong or weak tides and for different sea levels.
The best solution seems to be the creation of large basins along the coast, enclosed by a dike on which wide openings feed perpendicular channels in which rows of tidal turbines are placed (figures 3 ).
These channels, 1 to 2 km long, are bordered by low-load dikes and can be closed on the seaward side by sluice gates similar to dam sluice gates on large rivers. The bottom of the channel can be concreted to a depth of 0.50 m.
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New solution: Maréliennes
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