By strategically attaching a lift bag to an item that is too heavy or too bulky to move, for example an outboard engine, it's possible to lift the item from the sea bed to the surface.
The bigger the bag and the air bubble inside, the more weight it can lift. Each litre of gas inside a lift bag will lift one kilogram.
Lift bags are available in many different sizes from 25kg to 1000kg bags.
Lift bags are available in red, high-visibility yellow, blue or white and can be manufactured to include attachments and strapping.
Consider using a lift bag with an overpressure relief valve to slow the ascent, and 'never' use your primary second stage regulator to inflate a lift bag.
PADI Specialty Courses |> Search and Recovery |> Underwater Navigator |> Deep Diver |> Wreck Diver |> Nitrox Diver |