the main ridge of the shoal is made up of five distinct areas. these are named haisborough sand, haisborough tail, hammond knoll, winterton ridge and hearty knoll. to the eastern edge of the sands there are areas called hewett ridge and smiths knoll which form a ridge of sandbanks on the outer boundary of the sands. inshore and to the west there are additional banks including winterton shoal and the newarp banks.