Walmer Lifeboat Station was established in 1830. Over two thousand ships are believed to have been wrecked on the Goodwin Sands, and the masts of several wrecks are visible from the shore at low tide. Hence there have always been two lifeboats located at the joined towns of Deal and Walmer along the coast opposite the sands.

Goodwin Sands is a 10-mile-long (16 km) sandbank at the southern end of the North Sea lying 6 miles (10 km) off the Deal coast in Kent, England. The area consists of a layer of approximately 25 m (82 ft) depth of fine sand resting on an Upper Chalk platform belonging to the same geological feature that incorporates the White Cliffs of Dover. The banks lie between 0.5 m above the low water mark to around 3 m (10 ft) below low water, except for one channel that drops to around 20 m (66 ft) below. Tides and currents are constantly shifting the shoals.