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   Back to Ranks in Nelson's navy

'Which London dock played a vital, but secret, role in the D-Day campaign?'


The East India Import Dock

  • This was one of several sites in the country chosen for the construction of 'Phoenix' caissons.
  • These were prefabricated concrete blocks forming part of the Mulberry harbours, which allowed easier unloading of troops and supplies after the Normandy landings.
  • The Robert McAlpine Company built eight caissons at the East India Dock, and another two further down the Thames at Erith. 

A Phoenix caisson under construction.
View full size imageA Phoenix caisson under construction. © NMM

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