Inflatable buoyancy airbags, floating airbag, or salvage airbag, a lifting bag is a diving equipment used in aquatic environment to lift heavy loads.
The underwater lift bags help you in your technical lifting submarine operations. With success and safety you can lifting heavy loads since great depths to the surface..
Closed underwater lift bag 
They are available for capacities ranging from 500 to 10,000 kg. They have a supply valve, handling handles and a pressure relief valve. We have a balancing sleeve in the lower part of the Closed underwater Parachutes to prevent risks. In order to obtain a better distribution of the loads, it is necessary to use a spreader bar.
Open underwater lift bag (parachutes)
Open underwater Parachutes are available for capacities ranging from 100 to 30,000 kg. They are equipped with High Resistance straps which ensure a safety coefficient of at least 4 for the structure. Up to 100 Kg, the open underwater lifting bags have a valve in the upper part. From 500 Kg and above, they have a pressure relief valve in the upper part which is controlled in the lower part. It allows a permanent control of the movements of the parachute.