In 2017 £1.5 million was spent constructing a fishtail rock groyne and refurbishing the 4 existing wooden groynes. The aim of this project was to reduce rates of longshore drift by trapping sand on the beach. Fishtail groynes act as a barrier to sand being backwashed and result in deposition due to wave refraction near the groyne. As a result they are thought to be more effective than linear groynes at maintaining sand levels.

This fieldwork investigation aims to establish whether the rock groyne (constructed in 2017) and the wooden groynes (refurbished in 2017) are successfully maintaining or even increasing levels of sand on Cleethorpes beach.