[PappyCain]

I find blowing just half the tanks in an emergency surface is that fast,the sudden blast of oxygen at the surface into the boat almost knocks the men out


Hypoxia is a pathological condition in which the body as a whole (generalized hypoxia) or a region of the body (tissue hypoxia) is deprived of adequate oxygen supply. Variations in arterial oxygen concentrations can be part of the normal physiology, for example, during strenuous physical exercise. A mismatch between oxygen supply and its demand at the cellular level may result in a hypoxic condition. Hypoxia in which there is complete deprivation of oxygen supply is referred to as anoxia. When there is flatulence in a sub when under pressure, the men will experience euphoria a condition that is overcome by flatulence with particulate which is to be avoided. A rush of salty clean AIR (not oxygen)will cause the inner ear to pop causing a distress on the knee joints and a relaxed bowel movement on those seated. This was a known issue and was never treated in the training manuals. Notice all the men stand up when opening the hatch (in all movies).