Sonar scans by the RAF Museum, Wessex Archaeology and the Port of London Authority then confirmed the identity of the aircraft as the Dornier Do 17Z Werke number 1160.
Nicknamed the Luftwaffe's "flying pencil" bombers because of their narrow fuselage.
A platform is now above the wreck and divers have started to build a cage around the aircraft - working in 45-minute shifts - at the start of the salvage operation which should take around three weeks.
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Dry and sunny with long spells of sunshine in the south east and feeling hot
Fine and dry with some good long sunny spells, especially this afternoon and early evening and feeling very warm
Saturday morning's weather for the east of the region