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Since the diver is buoyant (being the same average density as the water), they are essentially weightless. Not in freefall, but weightless.

Given neutral buoyancy and a "preload" of 1000 psi, is there any reason a person couldn't endure the G force acceleration equivalent of the weight of that 2300 foot water column? In other words, if you put a pilot/astronaut in small vat that is under that high pressure, and then subject that vat to 67 Gs of sustained acceleration, would the pilot even feel it? (1000 psi / 14.7 psi = 67) I understand that the life support system may need to adjust the pressure as G load increases because the water above the pilot will get heavier.

First, does that make any sense? And am I applying the right basic formula in making High G equivalent to high pressure at 14.7 psi = 1G?

Thanks!