Three Architectural Drawings of the Sea Wall at Purfleet
Medium: Ink on paper
In the 1760s a large magazine was built at Purfleet. It replaced a magazine in Woolwich which had been damaged in an explosion. Purfleet had five large magazine buildings used to store gunpower and each could accommodate 10,400 barrels. This plan demonstrates the danger of flooding to which the magazine was vulnerable. New sluices and wooden floodgates were built as a more efficient drainage system and to protect the fort from the danger of flooding from the River Thames.