The island was mainly agricultural land until the 20th century when it became the fastest growing seaside resort in Britain between 1911 and 1951 . The North Sea flood of 1953 devastated the island , killing 58 islanders and leading to the temporary evacuation of the 13,000 residents . Canvey is consequently protected by modern sea defences comprising of concrete sea walls
North Sea flood of 1953
North Sea flood of 1953
Canvey Island