Roseland and others, please note that after geting better image I revised my post #1472. THS position could not be determined from that picture. Will try to get in an A-320 tail to have a look and compare.
"Baloon" for lifting is actually a device, used underwater to lift things off the bottom to the surface. It is shaped like something between parachute and hot air baloon and filled with air from the bottom. Cannot lift things out of the water, you need crane for this. This device will change shape, fluff in the stream of water and lose air, so not much use if currents are strong-could even act like parachute and drag the whole thing downstream.
hoistop
Last edited by hoistop; 8th Jan 2015 at 20:28.