Port city in northern France, Calais is located on the southern shores of the Strait of Pas-de-Calais, the British port of Dover.

Calais has 70,700 inhabitants and is a port complex activity (fishing, shopping and travel). The work conducted port city and industrial development so that today there is a Calais important textile industry (lace and woven fabrics and synthetic fibers, clothing), chemical plants, metallurgical, electrical and food industry enterprises).

Calais Harbour entrance has a depth of 7m and a width of over 130m. Located in the northern port city, Nioux-Calais district, is organized in several basins and docks.