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A submarine is kept at, or close to, surface air pressure.

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Q: How can people withstand pressure in submarine?
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How do people enter and exit the submarine?

from the entrance :P +++ Through hatches designed to withstand the pressure of the sea water when submerged.


Why submarines are made of thick sheet of metal?

As a submarine submerges, it is subjected to a high volume of water pressure, which increases the further in depth the submarine goes. They have to be built to be able to withstand this pressure.


How much pressure can a submarine withstand?

It's totally dependent on the hull type, material construction, and overall design, but in general, just before a submarine reaches crush depth is as much sea pressure as it can handle.


Why are submarines built of hard thick sheet of metal?

Because they need to be able to withstand the pressure of the seawater outside. The deeper a submarine goes - the higher the pressure gets.


How much pressure can an eggshell withstand?

An eggshell can withstand a lot more pressure than people think. It can withstand the force of 6.2 pounds or 25 Newtons.


Why submarine made up of strong material?

A submarine is made from strong material so it can withstand the tremendous pressure at depths.


Why does the strength of a submarine hull have to be stronger than the hull of a ship?

because if a submarine goes under water to deep levels, it needs to hold against the air pressure. Yes the person said above.. They have to have a MUCH higher ability to withstand the pressure of the water pushing in against the hull of it.


How do you get into the submarine?

Through an air and water tight door called a hatch. These hatches are typically thick, round and rounded metal to withstand the sea water pressure at depth.


Can water exert pressure on a submarine?

Yes, water exerts pressure on the hull of the submarine.


How does water pressure affect a submarine?

When a submarine goes farther down in the water, the water pressure becomes greater. If the submarine goes to far, pipes can explode and let in water, or it can implode the submarine


Does the water pressure increase the deeper a submarine goes?

Yes, the water pressure on a submarine increases as it goes deeper.


Why are submarines always built with very thick and heavy metal?

The pressure hull of a submarine must withstand the pressure of water at depth. Hundreds of pounds of pressure per square inch translates into many tons of pressure around a pressure hull. If that hull doesn't have the strength to stand up to this, the pressure hull will implode. Steel is a "known quantity" as far as metals. We've used it for a long time, and we have a good handle on its characteristics. Steel alloys are extremely strong, fairly easy to fabricate, and won't double the national debt if we use this metal to make a submarine pressure hull. Steel's weldability and its common availability make it a fine choice for submarine pressure hulls. It's really strong, too. That's a big plus. No one wants to be inside the pressure hull of a submarine when it fails.