Hurd's Deep is an underwater valley in the English Channel, northwest of the Channel Islands. Its maximum depth is about 180 m, making it the deepest point in the English Channel.
Hurd Deep running from bottom left to top right of an extract from a 1955 Admiralty Chart
1955 Admiralty Chart No 2649 showing Hurd Deep in the context of the English Channel
The English Channel, also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busiest shipping area in the world.
English Channel
Osborne House, the summer retreat of Queen Victoria on the Isle of Wight. Starting from the late 18th century, settlements on and around the English Channel coastline in England grew rapidly into thriving seaside resorts, bolstered by their association with royalty and the middle and upper classes.
The Strait of Dover viewed from France, looking towards England. The white cliffs of Dover on the English coast are visible from France on a clear day.
Three French river mouths. Top to bottom: the Somme, the Authie and the Canche