Excessive water pressure at depth would implode the Sub destroying it and all soles within.
Test depth for U.S. boats was between 250' and 400' depending on the boat class.
This is a speed related question!!! Speed = distance / time Hence speed = 20,000 ft/ 20 hrs. speed = 1000 ft/hr
The depth of the dive and the duration of time spent at that depth are the two primary factors that influence how much nitrogen you absorb during a dive. Nitrogen absorption increases with depth due to higher pressure, and longer dive times allow for more nitrogen to be taken up by body tissues.
When water is taken into the tanks of a submerged submarine, its total volume increases, displacing more water and increasing its buoyant force. This increases the upward force acting on the submarine, causing it to rise in the water or maintain a shallower depth.
you first go to steven to get dive and dive dvie
Classified.
After you find the submarine you use dive up to the surface.
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.