When an object is lifted in 20 meters of seawater using a lift bag filled halfway with air, will the air start bubbling out of the bag before reaching the surface?

When an object is lifted in seawater using a lift bag filled halfway with air, the air inside the bag is subjected to the pressure of the water above it. In 20 meters of seawater, the pressure is significantly higher than at the surface due to the weight of the water column.

As the lift bag ascends, the pressure decreases, causing the volume of the air inside the bag to expand according to Boyle's Law, which states that the pressure and volume of a gas are inversely related at a constant temperature. As the volume of the bag increases with the decrease in pressure during ascent, the air will attempt to expand.

If the lift bag is only halfway filled with air, there is still a considerable amount of air volume available to expand. Eventually, as the lift bag approaches the surface and the pressure decreases, the air can expand to the point where it starts bubbling out of the bag before reaching the surface. This means that the air will indeed escape through any openings or holes in the lift bag as the bag rises, confirming that air will start bubbling out under these conditions.

This scenario highlights the importance of controlling the ascent rate and ensuring proper management of air in lift bags to prevent rapid decompression and ensure safety during the