Foulness Island level, which was above the danger level for this part of the Essex coast. This level in itself was not a danger to the island, as the sea walls had been raised and strengthened between 1951 and 1952 by the War Office, and were above mean sea level. However, the high water was accompanied by strong winds, creating large waves, which broke over the top of the defences, washing away the earth banks on the inland side of the walls. Two sections of the wall breached, from Rugwood Head to Asplin's Head on the eastern side of the island, and
Foulness Island commissioners were sent to inspect the state of the banks in the Rochford hundred, which included Foulness. The earliest record of sea walls is from 1271, and in 1348 there were problems with one of the marshes, which was flooding every day, indicating that it was below the level of normal tides. The sea walls were made of earth, and were thatched with hurdles of brushwood and rushes. The island was divided into 11 or 12 marshes, each with its own wall, rather than one wall around the whole area, and was extended in 1420 by a new wall around