Twice a day the tidal stream runs through the strait between Dover and Cap Gris-Nez, reaching about 4 knots, and turns with each tide. The chart shows the tide at Dover and the stream in the strait.
Source: Model: E.U. Copernicus Marine Service, Atlantic-European North-West Shelf Analysis and Forecast (NWSHELF_ANALYSISFORECAST_PHY_004_013, 1.5 km), hourly surface current and sea level
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