Where do submarines get air to surface?

To get a submarine to surface, the main vents in the top of the tank are closed and high-pressure compressed air is blown into the ballast tanks, forcing the water out through the flood ports at the bottom of the tank. Replacing ballast water with lighter air reduces the vessel's total mass.

Where does the air come from on a submarine?

Oxygen is supplied either from pressurized tanks, an oxygen generator (which can form oxygen from the electrolysis of water) or some sort of "oxygen canister" that releases oxygen by a very hot chemical reaction.

How do submarines fill with air?

When the captain decides it's time to take a dive, the air is released through a vent, and the tanks are flooded with water. This makes the submarine denser than the surrounding water, which causes it to sink. A supply of air is kept on board to fill and refill the tanks.

Where does a submarine get oxygen?

Oxygen in submarines is produced by putting sea water through a process of electrolysis. Submarines typically have a couple of big oxygen tanks as well, used to quickly raise oxygen concentration if the system fails.

How does oxygen circulate in a submarine?

Oxygen onboard a submarine is released either through compressed tanks, an oxygen generator, or by some form of an 'oxygen canister' that works by electrolysis. Oxygen is either periodically released throughout the day at specific time intervals or whenever the computerized system detects a reduction in oxygen levels.

How Do Nuclear Submarines Make Oxygen?- Smarter Every Day 251

How do submarines replenish compressed air?

In submarine technology a vent is a valve fitted to the top of a submarine's ballast tanks to let air escape from the top of the ballast tank and be replaced by water entering through the opening(s) called "flood ports" or "floods" at the bottom of the tank.

What happens to poop on a submarine?

Usually it sinks by itself, but some scrap metal can be added to aid its journey to the bottom of the ocean. Therefore, yes, submarines do produce trash that is thrown out into the ocean and it is terrible.

Do submarines have AC?

Even though the entire submarine has air cooling facility, only two decks are air-conditioned. The temperature in the rest of the submarine is around 30-35 degrees and the crew works in sweltering heat. The quality of the air is monitored constantly for impurities.

How do submarines maintain pressure?

Now, a submarine is basically a metal container filled with air, and there is just enough air in a submarine to exert the atmospheric pressure at sea level. If the submarine goes underwater, the amount of air within it does not change (unless there is a leak, of course), so the pressure within the sub remains the same.

How do submarines stay underwater so long?

Submarines float on the surface by using ballast tanks full of air. There are valves at the top of the ballast tanks that are opened when it's time for the submarine to submerge. As the air escapes, seawater comes in a the bottom of the tank.

Are submarines pressurized?

Pressure increases by 1 atmosphere every 10 meters. So, yes---that submarine at 300 meters has a pressure on the hull of 31 atmospheres. Because the internal and external forces are not equal (but the surface areas are), there is a much greater force pushing on the outside of the hull than the inside.

How does a submarine rise to the surface?

In order to control buoyancy, the submarine relies on special tanks that can be filled with water or air. To return to the surface, the tanks are filled with air. This makes the submarine less dense than the water around it, causing the sub to float to the surface.

Do submarines carry compressed air?

A. It is true that air is released from the ballast tanks and water is let into them through special valves to enable a submarine to dive, but the sub does not get air back to surface again. It carries down tanks of compressed air that can be used to empty the ballast tanks of water.

How is co2 removed from submarines?

In-order to remove CO₂ from the atmosphere, the submariners use a process called 'CO₂ Scrubbing'. This is done chemically using soda lime (sodium hydroxide and calcium hydroxide) in devices called 'scrubbers'.

Are females allowed to work on submarines?

The only officers with their own cabins are the captain, executive officer and weapon engineer officer. Only a small number of the 160-strong crew are female. For the officers on a submarine the wardroom is one of the few places — other than their cramped bunk — to relax.

Why can't submarines go to the bottom of the ocean?

So you can see how even machines have to be incredibly tough to be able to withstand that pressure without crumpling like an old pop can. Deep sea submarines – the ones that go deeper than anything else – have to have very thick hulls. Their windows are made of super thick glass.

How deep can a sub go down?

It's generally accepted that the maximum depth (depth of implosion or collapse) is about 1.5 or 2 times deeper. The latest open literature says that a US Los Angeles-class test depth is 450m (1,500 ft), suggesting a maximum depth of 675–900m (2,250–3,000 ft).

Do your ears pop in a submarine?

So no, submariners don't have popping ears and interestingly and importantly, it means that if you have an accident, deep down and you have to escape from a submarine, you won't get the bends because you haven't been breathing air at pressure.

How do submarines keep from being crushed?

Most submarines have two hulls, one inside the other, to help them survive. The outer hull is waterproof, while the inner one (called the pressure hull) is much stronger and resistant to immense water pressure. The strongest submarines have hulls made from tough steel or titanium.

Could you smoke on a submarine?

The Navy announced today a ban on smoking aboard submarines while they are deployed below the surface after medical testing showed non-smokers suffered effects of second-hand smoke.

Can a submarine survive a hurricane?

Many former submarine sailors remember crossing the storm. At an appropriate depth the boat was completely stable and the crew couldn't even tell that there is a storm happening above. That is one great advantage of serving in a submarine. However, if absolutely necessary, big ships can also cross most of the storms.

Does it smell on a submarine?

You are probably wondering why I would call this post such thing... Since Submarines remain submerged with a sealed atmosphere they rely on a chemical called Amine to remove the carbon dioxide. This chemical makes everything stink.

Do you get seasick on submarines?

Will I get seasick? Is it like being on a boat? Being on a submarine is very different to being on a boat. There is no rocking motion, as the submarine sits below the waves, and so people who get seasick on a boat will not do so on our submarine.

Are there showers in submarines?

The showers on a submarine are set up much like the ones in your home, well kind of. They have hot and cold water access with a recirculation pump so that the water stays hot so that you can use it quickly and efficiently by minimising water usage. Reducing water usage is a constant major driver for submariners.