Marine Airlifts

[Scramble]

I need some info on Airlifts, as used for underwater excavations.Does anybody know who makes these? or have any technical specifications for these or even how they work.

[troll]

You might get a result by contacting the University of Southampton. They are leading lights in Marine archaeology and at the Southampton Institute, indulge in all things maritime. Failing that, how about contacting the Royal Navy?:)