I have just added this to the map of places to fly your drone at Drone Scene:
A set of 11 WW2 sunken barges that were filled with concrete to protect the wetlands, mudflats and salt marshes in the Special Protection Area at Dengie from coastal erosion.
Obviously more visible as the tide recedes but they can be captured also without a low tide at times. Not recommended if the wind picks up as it does gust at that location without notice.
No issues with TOAL whatsoever along that stretch of coast but it is popular with visitors to the nearby historic chapel of St Peter-on-the-Wall.
From eyesight to the barges from a small public carpark is around 20-30 minute walk depending how fast you are!
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 17/04/2025. It remains the responsibility of any pilot to check for any changes before flying at the same location. Landowner permission may be required before taking off.