Program mable Logic Compute (PLC) and its design means was introduced into the principle of control and watching in submarine lifesaving breakout equipment .

Changes of the tympanic membrane in divers following the 153m simulated buoyant ascent escape with air as a breathing medium;

To insure the exercise torpedo rising safely,many kinds of rising devices have been used in the design of modern lightweight torpedo,among which gas filled floating bag is commonly used.