Navigational hazards

3 distinctive stacks of chalk, ca. 30 m tall, off the western end of the Isle of Wight, UK

seaswept and heavily eroded group of rocks southwest of Rame Head, in Cornwall, England, UK

Spurn is a narrow sand tidal island located off the tip of the coast of the East Riding of Yorkshire, England that reaches into the North Sea and forms the north bank of the mouth of the Humber Estuary. It was a spit with a semi-permanent connection to the mainland, but a storm in 2013 made the road down to the end of Spurn impassable to vehicles at high tide.

Inchcape or the Bell Rock is a reef about off the east coast of Angus, Scotland, near Dundee and Fife, occupied by the Bell Rock Lighthouse. The name Inchcape comes from the Scottish Gaelic Innis Sgeap, meaning "beehive isle", probably comparing the shape of the reef to old-style skep beehives. According to legend, the alternative name Bell Rock derives from a 14th-century attempt by the Abbot of Arbroath to install a warning bell on the reef; the bell was removed by a Dutch pirate who perished a year later on the rocks, a story that is immortalised in "The Inchcape Rock" (1802), a poem by Rob

sandbank off the east coast of England

an area of dangerously shallow water off the Massachusetts coast, USA

wind farm about 7 kilometres off the Clacton-on-Sea coast in the Northern Thames Estuary