A major exercise has taken place in Norfolk simulating what would happen if a ship demolished a section of flood defence wall.
The agency was testing how quickly and effectively a temporary flood defence barrier could be put in place to protect Great Yarmouth.
The Environment Agency event took place at Bollard Quay.
The scenario included dealing with a tidal surge which coincided with a high tide hitting the town.
Nick Hesp, operations delivery manager for Norfolk and Suffolk said: "The Environment Agency responds on average twice a year to shipping damage in Great Yarmouth.
"To identify areas for improvement, we are going to assess the robustness of out-of-hours working and the procedures we have in place with our external partners."