Dover is a town and major ferry port in Kent, South East England. It faces France across the Strait of Dover, the narrowest part of the English Channel at 33 kilometres (21 mi) from Cap Gris Nez in France. It lies south-east of Canterbury and east of Maidstone. The town is the administrative centre of the Dover District and home of the Port of Dover.

The Dover Harbour Board is the responsible authority for the running of the Port of Dover. The English Channel, here at its narrowest point in the Straits of Dover, is the busiest shipping lane in the world. Ferries crossing between here and the Continent have to negotiate their way through the constant stream of shipping crossing their path. The Dover Strait Traffic Separation Scheme allots ships separate lanes when passing through the Strait. The Scheme is controlled by the Channel Navigation Information Service based at Maritime Rescue Co-ordination Centre Dover. MRCC Dover is also charged with co-ordination of civil maritime search and rescue within these waters.

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