Artificial islands and fortress in UK estuaries

 

Humber estuary (Lincolshire)

North Fort, Read's island ...

 

 

 

His Majesty's Forts / Maunsell forts - Thames estuary

(Nore Fort is destroyed)

ROUGHT TOWER (aka Sealand)

TONGUE SAND

KNOCK JOHN FORT

SUNK LEAD TOWER

RED SANDS

SHIVERING SANDS

 

Solent ; Portsmouth

Really artificial islands or build on rocks who were outside the sea ?

Nab Tower one of two "Mystery Towers" build at Shoreham Harbour in 1918

Royal Sovereign Tower off Eastbourne

Napoleonic Forts : Horse Sand Fort on the mainland side of the Portsmouth approach

No Man's Land Fort

Spit Sand Fort (aka Spitbank) private