Hello, I am trying to calculate the equivalent amount of weight that a submarine would be under at 1000m below the sea. Apologies if this isn't that well explained!!! At 1000m - 101 atmospheres - which is 14.5 psi per atmosphere - so at 1000m it would be 1464.5 psi. Do I then multiple 1464.5 by the entire surface area of the submarine or just the top part that is facing the surface? I am aiming to try and get a figure that will enable me to say 'at 1000m deep the submarine is supporting the equivalent weight of X jumbo jets / cars etc' Any help would be so much appreciated!!!