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by m4rkuskk 4761 days ago
It's linear. The surrounding pressure increases by the following: P=γ*h P=pressure (lb/ft^2) h=height (ft) γ=density (lb/ft^3) water = 62.4lb/ft^3 So if he goes down 33ft, the pressure @33ft will be: Total pressure: 62.4x33 = 2059psf (1atm ≈ 2116.21psf)