The survey combined site observations with measurable inspection data and laboratory analysis to develop a more complete understanding of the existing protective coating systems. Particular attention was given to areas affected by corrosion, coating breakdown, flaking and delamination, together with locations subjected to tidal exposure and operational wear. Investigation of the historic coating system identified areas containing up to six layers of previous coatings. Laboratory analysis was used to provide additional information on the existing materials and support decisions regarding future treatment and coating compatibility. The asset operates within a highly aggressive marine environment, making appropriate surface preparation, coating-system selection and compatibility particularly important when planning future maintenance.