 During the construction period the area was hit by the higher locally 1978 North Sea storm surge which flooded 1000 properties, leading to the acceleration of the building for completion in October 1978.A scheme costing £215,000 was enacted to strengthen the sea defences at Mablethorpe which included installing timber doors across the pullovers which could be closed in winter.The promenade at Sutton-on-Sea was regraded, with an additional spraywall built, works were also carried out to increase the height of sea wall where it was overtopped.