The crew of three had been trapped inside the submarine for hours, sitting and waiting for rescue. Bauer gave the command. Witt and Thomsen lifted their legs and began to step on the spokes of the wheels, spinning them slowly like a giant human-powered waterwheel.
The submarine began to move forward. Bauer expected a graceful and smooth disappearance beneath the surface of the water, like an elegant metal seal. As she crashed into the seafloor and shuddered to a final stop, the three men were hurtled unceremoniously into the bow of the boat. They pieced themselves together, shaken but uninjured.
They were stuck. At first, they just waited. And waited. For at least five hours, according to them, they sat, wondering when rescue would come. Their dive had been witnessed by onlookers; they figured it was just a matter of time until the German Navy hauled them back up to safety and fresh air. Someone had in fact noticed, and eventually the clanking of chains and anchors on the hull indicated that boats and divers were poking around the wreck site.
But Bauer was growing concerned about the air … and the anchors. All the men were panting hard, pale and sweating. Bauer himself had a splitting headache and felt like he was about to be sick. Bauer knew these were the signs of carbon dioxide buildup, caused by the fact that they kept inhaling the oxygenated air they had brought down with them and exhaling noxious CO 2.
Their blood was becoming more acidic with every breath from the invisible but dangerous CO 2 , and he knew that they did not have much fresh air supply left. He was also concerned about the anchors and chains that were striking the submarine so loudly, because he thought her thin hull might rupture from their repeated hits. The submarine had an escape hatch, but the pressures of the ocean held it firmly shut.
Bauer reached up a pallid, trembling hand and gripped a seacock valve tightly in his palm, twisting it open. Water poured in and started to flood the submarine. Witt and Thomsen immediately pounced on Bauer, one slamming him down and sitting on his chest, the other scrambling to restrain his arms and close the valve. Wide-eyed, they yelled that he was trying to commit suicide and drown them too. But Bauer had opened the seacock because he was a man who wanted to live, and because he was also a man who understood physics.
The pressure inside the submarine was roughly 1 atmosphere because it had been closed and sealed on the surface at 1 atmosphere. The pressure in the seawater outside, at a depth of 16 meters, was equal to about 2.
Therefore, the pressure difference across the hatch of the submarine was about 1. Converting the units, if Bauer wanted to force open the hatch to escape he would need to be able to move it against the kilopascals of pressure pushing the hatch door closed. The hatch door had a total surface area of roughly 1.
The confederate submarine's that was the first to sink's name was? The density of a submerged submarine is about the same as the density of? How do you make a plastic bottle submarine float then sink and float?
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Why dont boats sink? What was the submarine that sink the Lusitania? How can a submarine control its sinking and floating? Study Guides. Trending Questions. Which algebraic expression represents this word description: the quotients of four and the sum of a number and three? Which of the following happens when a cell divides by mitosis? Still have questions? Find more answers.
Previously Viewed. How do you sink the submarine in the impossible game water? Unanswered Questions. What characteristics of a tragic hero does Macbeth possess and banquo lack? So, how would they navigate themselves? Thankfully, all submarines are equipped with navigation that guides them through computers.
They use ocean GPS satellite navigation , which relies on the space satellites to locate their position. Another system that they use is called sonar , which stands for sound, navigation, and ranging.
It works like radar — sending out waves into the sea to identify nearby objects, targets, underwater terrains, and other threatening things. Once the waves bounce off the objects, they will receive reflected echoes which can determine the distance between the objects. In short, the longer they receive echoes, the further the distance is, and vice versa. Sometimes, you may wonder how come people on submarines can breathe while they are in that closed space.
Here's the answer! When in port, submarines have access hatches. And when it's submerged at periscope depth, they also have a snorkel mast. Both of them function to bring in the air. Once they're submerged deep down in the water, a computerized system will continuously clear and monitor the air, hence people on board can breath clear oxygen.
As humans, we inhale oxygen and exhale carbon dioxide off of our body. It doesn't work the other way around, since of course, you can't breath in toxin. So, to avoid such thing happens, they have machines called scrubbers to trap carbon dioxide. Additionally, when we exhale, we also release moisture. Therefore, the subs are also equipped with dehumidifiers, which will get the job done in preventing condensation on the ship.
There are two ways on how a submarine can get back to the surface. The first one is called blowing to the surface. Still remember about the ballast tanks? The tanks that also play an important role for the subs to submerge? Apparently, they are also used for submarines to float — again.
The subs will blow high-pressure air into the ballast tanks, replacing the seawater inside. As they release the seawater, the subs will be less dense, or in other words, lighter. And when it's become lighter, the sub can rise to the surface with ease.
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