Dogger Bank is a large sandbank

Shoal

Shoal, shoals or shoaling may mean:* Shoal, a sandbank or reef creating shallow water, especially where it forms a hazard to shipping* Shoal draught , of a boat with shallow draught which can pass over some shoals: see Draft...

 in a shallow area of the North Sea

North Sea

In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

 about 100 km (62 mi) off the east coast of England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. It extends over approximately 17600 km² (6,795.4 sq mi), with its dimensions being about 160 miles (257.5 km) long and up to 60 miles (96.6 km) broad. The water depth ranges from 15 to 36 metres (from 49 to 118 feet), about 20 metres (65.6 ft) shallower than the surrounding sea. It is a productive fishing bank.