James,
thanks for that link, its an interesting UK report.
There have been similar archaeological reports undertaken in Australia particularly in WA in relation to the flyboat wrecks at Broome, but also in NSW and Victoria, but none of them seem to suggest recovery from sea is yielding anything of real restorative value.
http://wamuseum.com.au/collections/maritime/march/fallenangels/thesites.htmlTo be fair these reports are being undertaken by State authorities examining the achaeological values of the wrecks and protection insitu as per shipwrecks, rather than recovery, conservation and display "as is" let alone "restoration" as is usually discussed here.
Of course in some cases like the D0-17, Condor or Skua, or perhaps even the Stirling, the only option to bring one back from extinction is to recover wreckage from the sea, (and even then the recovered structures may only yield patterns for reproduction?) but for types already in preservation such as the B-17, the wartime image, even with known co-ordinates, doesnt ensure it could be found economically, let alone recovered and preserved either "as is" or restored for static display.
Even the 3 wrecks presented in this UK report are yet to prove their worthiness for recovery?
The Penbroke Sunderland is badly damaged in the forward fuselage area, and has lost its fin and one wing but apparantly otherwise relatively intact despite its shallow depth and exposure to corrosion - it is apparantly benefiting from discharge of currents from a freshwater stream?, but the report still suggests any recovery is likely to focus on conservation rather than restoration.
The Sandown C-47 is largely just a fuselage floor section sitting on the wing centre-section, and clearly not worth recovering, while the Off-shore "Intact" B-24 Liberator is describing the site as intact and undistrubed rather than an "intact" airframe, as the fuselage has rotted away completely and all that survives is the wing centre-section and remains of engines.
Despite is the success story of the Italian P40L, and past success such as the Rabaul twin seat zero by Kookaburra Publications, the time for recoverable/restorable wartime aluminium structures coming out of the sea must be coming close to an end after 60 - 70 years, and let alone complete airframes.
regards
Mark Pilkington