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Excessive water pressure at depth would implode the Sub destroying it and all soles within.
This is a speed related question!!! Speed = distance / time Hence speed = 20,000 ft/ 20 hrs. speed = 1000 ft/hr
Test depth for U.S. boats was between 250' and 400' depending on the boat class.
you first go to steven to get dive and dive dvie
Classified.
After you find the submarine you use dive up to the surface.
Unless the flooding and buoyancy was controlled, the submarine would continue to dive into the depths, possibly to be crushed by the great pressure of water.
A submarine has buoyancy tanks along its length. To dive or sink these are filled with water, which enters through valves, so the vessel becomes heavier. Its speed of descent can be controlled by the amount of water in the tanks and also by aerilons (small wings) which can be tilted to steepen the dive. There is obviously a depth limit for each submarine. To surface the vessel blows the water out with compressed air, the vessel gets lighter (more buoyant) and rises to the surface.
like 11,000 meters
About 2 Kilometres
The whale is flexible. The submarine is not, and is therefore subject to crushing from the pressure.
A submarine uses the surrounding waters too fill itself to dive and letting out the water too surface. Also the pressure of the surrouding waters (depending on depth) make it able for the Submarine to go back up. try pushing an empty pringles can down in your bathtub.