Guy Anson Maunsell’s Fruitful mind produced lots of Seafort defence designs, two were subsequently approved by the Ministry and Admiralty .
The Maunsell Army forts as shown below this included Nore Sands, Redsands and Shivering Sands and the Naval forts Knock John,Tongue Sands, Sunk Head and Rough Sands (Now Formerly known as the Principality of Sealand).
There was also three sets of Army Forts in the Mersey (Info to follow)
With plans for the Humber and Avon Esturaries.
These are copies of the actual (Uncle 6) plans that were used in the construction of the Redsand Seaforts.