🔴(Bản Full) Tiết Lộ Cuộc Sống Khắc Nghiệt Trên Tàu Ngầm Hạt Nhân, Ở Đây 1 Tháng Bạn Sẽ Bị Tâm Thần 2023-10-23 13:09

Why are submarines not designed to dive as deep as they used to? And what is the real depth that a submarine can reach? If you dive too deep, what will happen? In today's episode, let's answer all these questions together. But first, please hit the like button and subscribe to our channel so you can keep up with us on all the roads. When watching submarine videos underwater, everyone has once wondered why the water does not soak into the submarine. The question is a bit stupid, but it's not that simple. There are two covers on the front and back of the submarine. The two covers on the back of the submarine can only be closed at the same time, but cannot be opened at the same time. When the front cover is opened, the back cover cannot be opened. After the back cover is opened, the water may soak into the cover, but because the back cover is still closed, the water cannot soak into the submarine. When the operation is over, the front cover is closed, and then thanks to a special valve, the water that has fallen into the cover will be removed into a tank inside the submarine to make up for the loss of the back cover. Thanks to this, the weight of the submarine is maintained. After the water in the valve is removed, you can put another back cover in. That relatively complex design is what makes the ability to attack underwater of the submarine terrible. A real nightmare for submarines. So we can say that all the activities of the submarine are carried out underwater. Have you ever asked yourself and answered correctly why the submarine can move underwater faster than on the water? The key point here is the design of their water draft. This allows the submarine to swim in the ocean quickly when completely submerged in the water. When they float on the water, a lot of energy is lost to the waves created by the ship on the surface. This wasted energy reduces the engine's power, so there's nothing strange about them swimming slower than a normal ship with a bow or a rudder. However, not all submarines can move on the water. Older submarines, such as the submarine used in World War II and the first nuclear submarine in the world, USS Nautilus SN-571, their submarines are designed with angles to reduce the waves so that it moves on the water faster than underwater. The submarine is nicknamed the ocean killer because it can dive deep and carry a huge arsenal of weapons. We have to mention the K-278 Komsomolets nuclear-powered submarine with the world's deepest diving record of up to 1,020 meters. However, it has been under the ocean for a long time after the accident that broke the air duct and since then. No submarine can break this record, but the technology is much more modern. Right? Nowadays, submarines are not designed to dive as deep as they used to. To avoid the surveillance of submarine equipment, submarines need to dive to a certain depth. Therefore, the ability to dive deep is also an important factor in the development of this type of equipment. To do that, the cost must be very high. And to meet the requirements of the deep sea, the submarine has to use expensive alloy materials to withstand great pressure. In addition, the submarine also has to design two layers of shells, and this also costs a lot of money. Perhaps due to the high cost, this is the only submarine of its kind in existence. The United States has also studied the construction of a SeaWorld-class submarine that can dive deeper than 600 meters. This submarine can not only dive, but also has very advanced equipment. It can be considered one of the most powerful nuclear submarines in the world today. However, SeaWorld only built up to the third submarine. Because the US military found that these submarines can dive very deep and have no effect. Just to achieve this effect, the cost of building such a submarine was up to 3 billion US dollars. Its high cost makes even the richest army in the United States feel far away. Then, Russia built not a few submarines, but only two that can dive down to nearly 600 meters. There are also types of Borei-class strategic attack submarines that only dive about 450 meters deep. Meanwhile, the U.S. Oheo-class nuclear submarine only dives about 240 meters deep. We can see that countries are no longer trying to find a way for their submarines to dive deeper. Under the same conditions, diving deeper naturally has certain benefits, but it should not simply emphasize deep-diving technology. Because the deeper the dive, the higher the cost, and the higher the cost does not mean that the effect is also high. In fact, deep-diving technology is enough to help them hide in a subtle way. On the other hand, nuclear submarines now need to launch missiles. If the dive is too deep, it is not beneficial for the launch, so deep-diving factors are no longer important. So how long is the maximum time that a submarine can stay underwater? In fact, they are designed to have enough manpower to carry out tasks that require up to a few months. However, whether it is a DSN submarine or a nuclear submarine, they all have to float to the top, but the reasons for this are different for each type. For the DSN submarine type, the DSN engine generates energy through a process of burning oxygen. Therefore, they have to float up to have enough oxygen to ensure that the mechanism of the ship operates normally. Submarines have to sit on the water surface several days at a time or more often, not only to get clean oxygen from the surface of the water, but also to release less gas generated on the ship during the operation of the ship. This process is carried out by a device called a breath tube, which allows the ship to operate underwater while still getting oxygen from the surface of the water. Whenever the submarine floats up, its DSN engines operate and generate energy, used to recharge the batteries that help the ship operate. As for the nuclear submarine, of course it will operate based on nuclear reactors. These reactors generate enough energy for the electrical equipment on the ship to operate, as well as systems that support the life of the water. Therefore, unlike the DSN submarine, the nuclear submarine can operate every day, even every week, without having to float to the surface of the water. These reactors can generate enough energy for the ship to operate for decades, although both the nuclear submarine and the DSN have to float to the surface of the water to exchange information about the base and to receive new orders, or to convey other important information, because the underwater signals are less effective. Food and new medicines are the only limit for the maximum time of the nuclear submarine, because usually they only bring enough food for 90 days. It can not be denied that since it appeared at the end of the 19th century, the submarine has quickly become a significant weapon of the naval forces. For a long time, there was no way to destroy these marine monsters. The submarine can move freely and destroy the enemy ship without being discovered. Even when they float to the surface of the water, it is very difficult to detect and see them from a distance, especially under the sun. Everything is in a mysterious layer on the submarine's hull. Its main purpose is camouflage, and black is the darkest color to hide the monsters under the ocean. But when standing on the deck of a submarine or any ordinary ship, it is very easy to observe and detect objects on the surface of the water. In fact, the modern tubes and telescope tubes also allow butterflies to see objects from a distance of up to 70 km or more. In addition, all modern warships and destroyers have radar and sonar systems, which are capable of detecting ships from a very long distance. Therefore, the color on the hull of the ship is a very important factor that determines the life of the submarine. Meanwhile, black or gray are the darkest colors that help them blend into the environment around them. This is also the reason why submarines often float at night, because this is an extremely difficult time to detect. However, not all submarines are painted black and gray. Although these are the most common colors, you will see that some countries still choose other colors to disguise their weapons for many reasons. For example, the submarine of North Korea is painted green, due to the characteristics of the color of the sea area, water area and that country's submarine. As well as due to the need for use, some other countries such as Iran and Iraq also paint green for their submarine forces. Submarines of these countries mainly operate in clear, agricultural and coastal waters. Under these conditions, green will help you better. In addition, not all submarines are used for military operations. They can also be used in deep-sea exploration operations or mission missions. In these cases, camouflage is not the top priority. However, in the military field, black is still the color chosen first, because it is the most important part of the operation of the submarine, as well as to protect them from the enemy. At the same time, camouflage will still be the most difficult requirement to complete a submarine. However, it should be remembered that the use of a dark cover is only a very small part of the camouflage of these weapons, because almost 99% of the operation of submarines takes place underwater. How do they not get stabbed at each other? Not being detected by new enemies is a big problem. When the submarine sinks deep enough to use the telescope, it will determine its position once through the GPS navigation system. When the submarine sinks underwater, it will use its own navigation system, will feel changes in the course, combined with measuring the speed to calculate the exact position of the ship. At the same time, the navigator will calculate the position of the ship based on the course, speed, depth of the water and adjust according to the current of the sea water. The data collected later will be compared with the data of the navigation system installed on the ship to ensure unity. The submarine also uses Sonar radar to navigate. In addition, this radar is also used to avoid being stabbed into our submarine, detect and stab the enemy ship. When it comes to the sound radar, people often think about the active radar, which we often see in movies. The active radar will send a sound wave down to the water and check the echoing sound to know what's below or not. Submarines never use this kind of radar. Instead, it uses passive radar, which means always listening. Once the sound is detected on a certain level, which is only created by the operation of the submarine, we will follow that signal to tail and destroy the target. In the brown water area, things will be a little more difficult. At that time, you can use binoculars to look around, but the ability to move flexibly will be very limited. If there is a submarine that appears in front of you and does not dive deep enough, fast enough, then you will definitely encounter a big problem. You have to see the appearance of this ship from very early on. Operating in the brown water area also means that it is easier to be discovered by the opponent. Tossing binoculars out of the water will seem to be creating conditions for the enemy to recognize you. Here, for sure, the anti-fans of the world of focus will wonder, so what will happen to the life of the opponent in these sea dragons? We want to ask you the opposite question. Would you like to live in a dilapidated house where the temperature is usually 38 degrees C and the oxygen level is only 18% for how long? The working environment inside a nuclear submarine is said to be even tougher than on a space station. Here people can only work for up to 90 days. In general, nuclear submarines are forced to operate underwater for a long time, while diesel-powered submarines basically have to float on the water to replenish oxygen for a very short time. This is also true for any submarine, because they are not designed too big. The world's largest nuclear submarine was once built as a Russian submarine named Dmitry Donskoy. It has a surprisingly long length of 175 meters, a width of 25 meters, so you should know that normal submarines are only 60 to 90 meters long. The purpose of a nuclear submarine is not to explore the underwater environment, but to fight and fight. Therefore, most of the space inside is used to store weapons and equipment for fighting underwater. Because of this, the space for humans to live inside it is very limited. A small living space has to share with many people is one of the reasons why life on a submarine is very difficult. The crew of the astronauts is often equipped with a window so that when they rest, they can look down on the ground. This is very important, because it can reduce the feeling of numbness due to the limited space it brings. However, there is no such thing on a submarine, because there is no window. In fact, having a window is useless, because the sunlight can only pass through a depth of about 200 meters, and the operating depth of a nuclear submarine is about 75 to 900 meters below the surface of the water. Therefore, there is nothing surprising when a nuclear submarine operates underwater without a concept of day or night. In fact, for most of the crew, they carry out a unique living and working model, which is a three-week period, that is, every 18 hours there will be 6 hours of work, 6 hours of rest and 6 hours of rest. And as mentioned before, people will work and rest alternately through the above model to avoid having too many people concentrated in a certain area. Tight living space means that the atmosphere in the submarine will become suffocating and smelly. Although the entire submarine has air-cooled equipment, the overall temperature inside the submarine is still 30 to 35 degrees Celsius. Therefore, the crew not only lives in a small space, but also has to work in high temperatures. People believe that the largest area on the submarine is the dining room, so many sailors will gather there. But this is also the area with the highest temperature, with a maximum temperature of even over 38 degrees Celsius. Even in the hot weather, water supply is still very limited, and basically water is only used for drinking and cooking. Therefore, bathing on the submarine is a luxury. Imagine what the smell in the air will be like in a cramped space, where dozens of tall men rarely bathe and sweat continuously. Currently, there is no female swimmer in the submarine in the world for various reasons. However, the atmosphere on the submarine has another feature, which is that its oxygen content is quite low, only about 18%. This ratio is much lower than the oxygen content on the ground and about 21%. According to the sharing of some veterans who served on the submarine, such a low oxygen content is basically to reduce the risk of explosion, because everything is more difficult to catch fire in a low-oxygen environment. But it causes a lot of inconvenience for the people living there. In addition to difficulty breathing, or feeling tired, the most important thing is that the low oxygen content makes it very difficult for the body to keep cool when injured. Of course, in normal conditions, it is very rare for an accident to cause death on the submarine, but due to the low oxygen content, it is also difficult to calm people down. And with a cramped space, almost all sailors are always angry and angry. In addition, because one of the characteristics of the submarine is hidden, any signal can reveal their location. Therefore, crew members are completely prohibited from establishing contact with the outside world. Of course, today's technology allows them to write emails about confidential information and content that can be controlled. Therefore, most messages are very limited. All of these things have made life on the submarine difficult and challenging to the extent that even those who are trained can't live too long on it. Otherwise, all crew members will go crazy. In a report published in the military journal of China in 2022, based on a survey of 511 Chinese submarine sailors aged 26 to 30, up to 21% of the 511 sailors, that is, 108 people, were assessed to have mental health problems. Researchers explain that the submarine crew performs missions in the South China Sea are at high risk of mental illness, over-stress and high temperature and high humidity. Since 1996, the U.S. Navy has been deploying psychologists on aircraft carriers to solve mental health problems. In the next decade, the U.S. will deploy mental health care personnel at naval and naval warfare units. U.S. submarine sailors must regularly fill in the mental health assessment form. The form is clearly divided into 9 major symptoms, such as restrained, emotional, anxious and hostile behavior. So, how long have we seen life on a submarine? Please leave your comments below to expand the discussion on today's topic. It's scary to imagine that I'm stuck in a submarine that's sinking uncontrollably. Because once it reaches a certain depth, the submarine will be overloaded by the increasing pressure created by the surrounding water. However, we were shocked to learn more about what really happens when a submarine reaches a certain depth. But how do we estimate the depth of a submarine based on the sound it makes? Why is the possibility of finding the bodies of people on a sunken submarine very low? How was a sunken submarine rescued from the bottom of the ocean? And finally, why has no one ever actually experienced an explosion on a submarine? That's what we're going to explain in today's video. On November 15, 2017, the Arra San Juan submarine of Argentina disappeared several hundred kilometers from the coast of the country. About a week later, the Organization for the Prohibition of Nuclear Tests released a report stating that the sound of the submarine was created by the collapse of a submarine under the pressure of the Arra San Juan. However, the report also clarified the depth at which the submarine body sank. This made me very curious about how they could determine the depth of the explosion before it sank to the bottom of the ocean. In an explosion or underwater explosion, the air bubble inside the structure fluctuates and expands continuously before it disintegrates. This is called the bubble effect. The frequency of the bubble can be measured by sound and by knowing the air temperature inside the submarine so that the depth of the collapse can be calculated. In the case of the Arra San Juan, the bubble frequency is about 4.4 Hz and the depth is about 388 meters. The value of the depth found there can be used to determine the necessary energy to create the frequency detected by the sound in the depth. In this case, the energy released in the explosion is equivalent to the explosion of about 5,670 kg. The TNT explosive and the submarine body will sink at a speed of more than 2,414 km per hour. The pressure around it is 570 psi. It sounds scary, but no one has ever experienced this terrible experience. Of course, many people have died tragically in such accidents, but none of them will have enough time to feel or understand it. The human brain can take from 0.1 to 2 seconds to feel the pain. That's because there's a slow thing that can be transmitted to the brain and the most painful thing is when you get your toes pinched. It can take about a second until you really feel the pain, but if you let go of your fingers, your brain will feel much faster. It is estimated that the Arra San Juan pressure vessel was completely destroyed in about 0.04 seconds. That's less than half the time for anyone on the submarine to feel anything, although the crew may have realized that the wreckage was coming, but they never experienced it when it happened because their last moment will happen in a blink of an eye. As for the bodies on the ship, people really can't find it. The wreckage of the submarine's pressure body has some similarities with a diesel engine, in which the piston movement makes the diesel fuel automatically burn in the engine. Similarly, the air inside the submarine can have a fairly high hydrocarbon concentration. Things like hydrogen, diesel oil, auxiliary diesel engines, fuel oil, and rubber make them go into the airways of the submarine. When the body of the ship collapses, it works like a large piston on a giant diesel engine and the air can self-ignite. The high pressure will make it extremely hot. The force of the explosion, coupled with the vibration of the piston effect, will not leave any body. However, there have been cases of life escaping from the sunken submarine. At a depth of up to 183 meters, the special submarine escape gear can protect the crew members during the use of the escape door for up to 3-4 minutes, which is an extremely painful experience, including panic, oxygen poisoning, and paralysis. But things get worse when the submarine is too deep to use the escape gear. Your only chance of survival is underwater rescue vehicles such as the Russian rescue submarine Love Bridge. It is a vehicle with a titanium shell equipped with an escape valve, but their reliability in real emergencies is still a mystery. Russia's nuclear submarine Kursk has the participation of some underwater rescue vehicles, but unfortunately the mission failed because the bridge could not reach the sunken submarine. These complications made the rescue of the UNSW crew almost a conspiracy. During the 19th test dive, UNSW dived into the water, but an accident occurred that caused the main air intake valve to open when it was at a depth of 18 meters below the water. This caused the rear of the room to be blocked, both the engine and the cabin of the crew were submerged, making the submarine sink to the bottom of the ocean. People in environments with enough air to breathe The crew released a valve attached to a phone from the bow in the hope that the rescue team would find it. Then all they could do was stay calm and wait. There has never been an attempt to rescue a sunken submarine successfully at a depth of more than 12 meters. The crew of the SQUA LOOPS sat at the bottom of the ocean 74 meters away from the water. A while later, the valve was discovered by the SCU SPIN ship. The crew of the SQUA LOOPS was able to communicate for a while, but a high tidal wave caused the cable to be broken and could not be connected anymore. Within 24 hours, the rescue ships arrived and they had a test device to deploy. It was a lifeboat. First, a diver with a helmet and a helmet cap had to be ready and dive down, then put the lifeboat exactly on top of the submarine's door. Stuck at the bottom of the ocean, the crew of the SQUA LOOPS was very happy to see the rescue team. Seven divers were hanged on poles and brought to the surface. Then, to save all 33 men, the rescue team had to go three more trips. However, the U.S. Navy had to spend another 113 days to rescue the submarine. There were still bodies in the submarine that needed to be found, so the plan was to attach more valves to the body of the submarine to lift it up from the bottom of the ocean and then bring it back. To do this, first the valves had to be filled with water to create a buoyancy and sink into the water. After being attached to the submarine, the air was pumped into the valves, pushing the water out, making the valves rise. Finally, the U.S. SQUA LOOPS returned to the port on September 13, 1939. Twenty-five bodies had been picked up from the wreckage, but the bodies of the 26th victim were not found. In less than a year, the SQUA LOOPS was repaired and put into operation again under the name of U.S. SAVAGE to serve in World War II. The SQUA LOOPS was banned when it boarded the Southfisk ship. After it stopped operating in 1945, the control tower was removed and placed in a park at the BOSMERS Naval Shipyard, where it held commemoration ceremonies every May. In the case of the Titanic, it was lost on June 18, 2023. When trying to explore the RMS Titanic, the water pressure was 10 times higher than that of the RMS San Juan. Before the accident, we will never know what the crew of the five people on the Titanic went through in their final moments. But perhaps their final thoughts were happy and relieved, not affected by the horror of what was going to happen So what will happen to the life of the sailors inside these submarines? We want to ask you a question. Would you like to live in a dilapidated house where the temperature is usually 38 degrees Celsius and the oxygen level is only 18% in the jacket? The working environment inside a nuclear submarine is said to be even more intense than at a space station. Here people can only work for up to 90 days. Nuclear submarines are forced to operate underwater for a long time. And submarines run on diesel engines will basically have to float on the water to replenish oxygen in a very short period of time. The purpose of a nuclear submarine is not to explore the underwater environment, but to fight and fight. Therefore, most of the space inside is used to store weapons and equipment for underwater combat. A small living space has to share with many people is one of the reasons why life on a submarine is very difficult. To compare, at the space station, the sleeping quarters of the astronauts are equipped with a window so that when they rest, they can look down to the ground. This is very important because it can reduce the sense of emptiness brought by the limited space. In fact, having a window is useless because the sunlight can only pass through a depth of about 200 meters. And the operating depth of a nuclear submarine will fall to about 675 to 900 meters under the water. Therefore, there is nothing surprising when a nuclear submarine operates under the sea without a concept of day or night. In fact, for most methods, they carry out a unique living and working model that is a 3x6 schedule, which includes 6 hours of work, 6 hours of rest and 6 hours of rest. The narrow living space means that the atmosphere in the submarine will become suffocating and smelly. Although the entire submarine has air-conditioning equipment, the overall temperature inside the submarine still reaches 30 to 35 degrees Celsius. Therefore, the crew not only lives in a small space but also has to work in high temperatures. It is believed that the largest area on the submarine is the dining room, where the crew will focus, but this is also the area with the highest temperature. With the maximum temperature, it can even exceed 38 degrees Celsius. Imagine the smell in the air will come out in a narrow space, where dozens of tall men rarely bathe and constantly sweat. However, the air on the submarine has another feature, which is its oxygen content is quite low, only about 18%. This ratio is much lower than the oxygen content on the ground, which is about 21%. According to the sharing of some veterans who served on the submarine, setting such a low oxygen level is basically to reduce the risk of explosion, because everything is more difficult to catch fire in an environment with low oxygen content. But it causes a lot of inconvenience for those who live in it, because in addition to being uncomfortable, or face-to-face and feel tired, the most important thing is that low oxygen content makes it very difficult to keep the body cool when injured. And with a narrow space, most of the crew members are always angry and grumpy. In addition, because one of the characteristics of the submarine is hidden, so any signal can reveal their position. Therefore, the crew members are completely prohibited from establishing contact with the outside world. All of these things have made life on the submarine difficult and challenging, to the point that even a person who is being trained can not live too long on it. If not, all of the crew members will have to leave the submarine and return to the sea. Although sailors always have to prepare for life on the sea, living on a submarine for many months is a completely unusual experience. It is not like the lives of ordinary people. Fast-attack submarines or guided-missile submarines of the US Navy are often deployed in long-term missions of up to 6 months, while ballistic missile submarines also have to go to the outside world for a long time. In the case of the US Navy, ballistic missile submarines also have to go to the outside world for 3 months. Today's show will help you better understand the life of sailors in these old submarines. Keep your oxygen tight because we are going to dive down a few hundred meters to visit the sailors. Today, the ability to act without being detected is very important for the success of military operations. Thanks to the emergence of submarines, most of such strategic and secret missions can be carried out successfully. Because of this, billions of dollars are spent on the production of these giant submarines in order to prepare for extremely important missions in the Pacific. In Sweden, the submarine production company SAAB is producing a type of submarine that is the most advanced in the world. The company's expertise is based on more than 100 years of experience, but they have supplied 7 types of submarines across 3 continents. The company selects workers from different fields to form a multi-functional team and come up with solutions to develop this most modern ship. The application team is fully digitalized, based on a model in terms of definition, to store parts and information together to ensure the safety of the product data. When ready, the parts of the submarine will be tested to ensure their safety for sailors as well as meet the needs of the Navy. In the area that SAAB considers one of the largest supersonic tests in the world, large parts are tested at high pressure equivalent to a depth of more than 1,585 meters. Before completing the submarine, a special ceremony will be held to mark the completion of the submarine. Usually, the names of the ship's sponsors will be engraved on an iron plate on the ship. After the submarine has been completed and has undergone all the tests with the same conditions on the sea, the actual test process will take place. Of course, the submarine must first be confirmed to be ready and carry out its tasks according to the standards. At the test event, there will be a visit of the ship's sponsors as well as top officials, state officials and the media. After the sign of the ship is pulled up and the ship is controlled by the Navy, it officially becomes a US Navy ship. To do this, ships often use what is called a dry tank. This is a tank that can drain water and allows for more convenient check and repair of the ship. This area plays an important role in anything from maintenance to complex repair and repair of parts of the submarine. Upgrading after being used for half a year is also done in a dry tank. This process includes upgrading the technology and upgrading the combat system as well as the main gun. In order to dock the old ships, the big ships often need the help of tugboats. These tugboats are designed to push and pull boats or large ships. Some tugboats also have to perform the task of rescuing the submarine in case of need. Each tugboat will have different requirements such as the area of the port or the type of ship the tugboat will carry within its range. When the submarine is docked, the dry tank is filled with water. Just like docking, removing a complex ship requires a careful plan as well as working in an efficient group. A tugboat will pull the ship out of the tank and then the ship will be ready to rejoin its crew. Submarine sailors are often stuck with the submarine for about three years. They have to take on short-term tasks within two or three years. Submarine sailors are not allowed to access the mobile data service or even be allowed to look out the window. Submarine sailors will be able to enjoy delicious food during their stay in the Virginia-United States-Saudi-Dakota submarine. The food is very delicious. A submarine will have seven food experts on board and they are responsible for the meals. They usually start preparing four hours before each meal. Some meals will include pizza, omelette, and a cup of coffee. The food experts provide food to 135 submarine crews three to four times a day when the ship is on duty. Even the dining hall where the crew eats is decorated to make them feel happier. However, the mission on a submarine requires the submarine to operate underwater for a long time. Submarines run by diesel engines will basically float on the water to replenish oxygen for a very short time. The purpose of a submarine is not to explore the environment but to fight and fight. Therefore, most of the space inside is very limited. Submarines are often crowded because there are only narrow spaces to walk and small beds to sleep. Work changes every six to eight hours on the submarine, even when the remaining space for the crew is very limited due to the needs of the nuclear submarine. This is one of the reasons why life on the submarine is so difficult. In fact, for most of the crew, they have a unique model of living and working. It is a three-person schedule. That is, in 18 hours, there are 6 hours of work, 6 hours of rest and 6 hours of rest. For example, dozens of people have their own beds. After 6 hours of rest, the next group will come to wake you up and sleep on the bed you just slept on. In other words, the beds on the submarine are shared. Obviously, there is no personal space for the crew on the submarine. The operating time of the submarine often depends on the amount of food it can store. At the center of the submarine is the control room, both in terms of physics and operation. Since the submarine was launched, it has been operating continuously and everyone needs to know their job. Therefore, these giant submarines not only need to be invested heavily in engines, but also need to learn to operate. Obviously, living in this environment is not easy at all. Not only eating, sleeping and driving, the crew also have to participate in high-intensity training missions to ensure that everyone understands the operation of the submarine during the mission. All of these have made life on the submarine more and more interesting. Submarines are always considered a very effective deterrent weapon of the naval forces in the world. However, the submarine forces of powers such as Russia, the United States and China have all experienced serious disasters during the test and operation process. Operating a submarine is a very risky job. Even the highest-tech nuclear submarines can be at the bottom of the ocean if the crew is not careful or there is a technical error. In the mid-1950s, the US Navy launched the world's first nuclear submarine USS Nautilus, after which the US Navy built nine different nuclear submarines, but could not find a suitable design to produce a series until the USS Tresor nuclear submarine was born. This is considered one of the first representatives of the US fast-attack nuclear submarine generation. Tresor is the only nuclear submarine that has been designed to move fast and operate at a large depth. It has a reasonably arranged hull so that the tip is still applied on current submarines. In addition, Tresor is the first submarine to use a high-density steel alloy HI-80, which was also used on Azuleth-type submarines born in the 1980s. With a capacity of 4,369 tons, equipped with a powerful S5W reactor, Tresor-class submarines can move very fast at 20 nautical miles per hour when floating and 30 nautical miles per hour when fully submerged. This speed is faster by half than previous Tresor-class submarines which could only swim 20 nautical miles per hour when submerged. When launched in 1960, Tresor was the world's first submarine and the most modern weapon system in the US Navy at that time, with the only mission to find and destroy the Soviet submarine. The SN-593's sonar navigation system has a large target detection range, while the latest SU-BROC rocket can effectively destroy the enemy submarine. The Tresor-class submarine was the first submarine in the US Navy to be equipped with the Skylark rescue ship. The submarine tested two times in the water and underwater before contacting Skylark at 6.30 a.m. on April 10. Tresor moved in a circle under Skylark to ensure that the submarine was ready for launch. Skylark did not respond to Tresor's call. The rescue ship's crew understood that the submarine had sunk. The sound engineer on the Skylark then heard the Tresor ship being torn and crushed under the extreme pressure of the sea. According to US military investigators, the sinking of the Tresor was caused by salt deposits. There were more than 3,000 salt deposits on the Tresor ship, including more than 400 salt deposits in the wrong order. Therefore, the seawater pipeline was broken, leading to accidents that could not be activated by the water supply system. After the tragedy of the USS Tresor, US Navy experts were quickly mobilized to develop a safety system for the so-called Sharp Shape submarines. This system allows submarines to rise to the surface in the event of an emergency. Sharp Shape submarines are capable of navigating at sea at a speed of 30 nautical miles per hour at a depth of 160 meters. However, thanks to the Sharp Shape, the ship does not sink and can still move to the base. Although participating in the voyage of the USS Tresor, K-141 Kursk is a nuclear submarine of the 949A Antey project, designated by NATO as Oskar 2. Kursk is one of the first naval ships built by Russia and launched after the Soviet Union collapsed. The Antey class is the highest submarine technology in the pre-1991 period, also the second largest submarine in the world The K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. On August 10, the K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. On August 10, the K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. The K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. The K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. The K-141 Kursk submarine participated in the Summer of X the largest exercise of the Russian Navy in more than 10 years. The K-141 Kursk submarine encountered 100 to 250 kg of TNT at pitches of Kursk submarine and rebounded the first time causing the submarine to sink. One hundred and eighteen members of the Navy died amidst the Queen Marie Air Force outbreak which was involved in the satellite but failed to save them, causing them to die of lack of oxygen a few days later. Five days after the incident, Russia accepted the request for support from the British and Norwegian governments. Six teams of British and Norwegian divers came to carry out the rescue mission. The relevant parties agreed that the Norwegian divers would dig holes in the hull, but only the Russian divers were allowed inside the ship. The high-pressure cutter helped open a hole in the eighth frame. From there, the Russian divers opened the last frame and found the ship's logo. The bodies found at the bottom were heavily buried. The inside and outside of the ship were measured for abnormal results. The official rescue operations ended on August 21, when the Norwegian divers concluded that no one was left alive. The bodies of the divers were taken to the morgue. The Russian Navy conducted an investigation, concluding that the explosion originated from the HTP, an active form of hydrogen peroxide, which is used to make fuel for the Type 65 torpedo. A lump of lead on the torpedo shell caused the HTP to leak out. When exposed to seawater and a corrosive substance, it quickly exploded at a rate of 5,000 times the initial rate, creating a large amount of water and oxygen. The pressure from this reaction made a barrel of kerosene fuel on the torpedo and caused the first explosion, before creating a chain reaction leading to the second explosion. Despite this, over the past 20 years, there are still many theories about the real cause behind this tragedy. Even Dodok Vyacheslav Popov, former commander of the Northern Fleet of Russia in the 1999-2001 period, said that the Kursk nuclear warhead collision was the result of a collision with a NATO submarine. The former official added, before the collision, this foreign submarine was discovered by an anti-submarine aircraft of the Russian Navy off the coast of Norway. Popov said he knew for sure up to 90% of the name of this submarine, but was not allowed to disclose. USS Corbien SSN-589 USS Corbien SSN-589 is a U.S. nuclear-powered submarine. This is a submarine of the Skipjack class, the first modern submarine class of the U.S. Navy. The U.S. Navy often uses USS Corbien in nuclear submarine drills along the coast of the Atlantic Ocean, Bermuda and Puerto Rico. In 1966, USS Corbien was chosen to carry out a special mission and shot down a missile of the Soviet Union. After the special mission, the command officers on the USS Corbien received a medal of praise from the U.S. Navy. Other officers and captains on the ship also received praise for their excellent performance and courage. On February 1, 1967, USS Corbien was stationed at the North Foss Naval Shipyard. After more than a year of maintenance, on February 15, 1968, USS Corbien was ordered to move to the Mediterranean. On May 20, 1968, when the Corbien submarine was preparing to return to base, it was ordered by the commander of the Atlantic Submarine Fleet to request the ship to change course to track the fleet of the Soviet Navy near the Canary Islands. On May 21, USS Corbien announced its current location on the base. This was the last time the U.S. Navy received a signal from the submarine. After the signal was lost by USS Corbien, the U.S. Navy conducted a search, but to no avail. On June 5, 1968, USS Corbien and all crew members were declared missing. By the time the USS Corbien sank, the ship had a total of 99 crew members, some equipment due to exploration, and two torpedoes carrying nuclear warheads. By October of that year, a deep-sea device deployed from the USNS Misa research ship had just identified the USS Corbien's body at a depth of more than 3,000 meters. To date, the cause of the sinking of the USS Corbien remains a mystery. Many people believe that the USS Corbien was attacked by a submarine of the fleet. Some other information suggests that the cause of the sinking of the USS Corbien was due to two torpedoes on board. The U.S. Navy said the cause was that a Mk. 37 torpedo was accidentally activated, then released from the USS Corbien and locked the target into the submarine itself. A torpedo explosion in the abyss is also a theory given by investigators. The HMS Tethys of the British Navy is one of the few ships in the world that has been sunk twice by the Navy in the history of the world. It was launched in June 1938 and began testing on the sea a year later. In the early 20th century, submarines were at high risk when operating due to incomplete design, many errors and often leading to tragic accidents. The HMS Tethys submarine of the British Navy is one of the few ships that has been sunk twice by the Navy. The HMS Tethys belongs to the T class, is part of the project to strengthen the British military power before World War II. The HMS Tethys was designed by Carmel-Les and Vickers Armstrong in June 1938. The 84-meter-long, 8-meter-wide submarine has a capacity of 1,590 tons of hydrogen, thanks to two 3,700-kilowatt diesel engines and two 2,200-kilowatt electric engines. The ship can reach a speed of 28 kmph and 17 kmph with a range of 8,300 km. The main weapon of the HMS Tethys is 6 533 mm torpedo launchers with 4 external torpedo launchers and a 102 mm cannon. On June 1, 1939, the ship had an accident when taking off for a test flight with the 102 crew. During the first test flight, the crew found the ship too light and could not open a torpedo launcher. Most torpedo launchers then operated with a two-door mechanism. The outer door opens to the sea when the torpedo is launched and the inner door opens when the torpedo is loaded. A door cannot be opened manually if the other door is not closed. A quick check shows that a dry paint has clogged the door outside the torpedo, preventing the crew from opening the inner door. They tried to open the door manually, but the pressure of the water was too great that the sea water quickly spilled into the shipwreck. Due to the lack of an emergency torpedo closure mechanism, the entire ship's nose was submerged and the water could not rise above the surface. The crew decided to use the torpedo but it only received one person each time it was used and had to be balanced before the crew left the ship. Only the first four people left the ship safely, including Captain Harry Oram. The fifth person was too scared so he opened the torpedo cover before it was balanced and died immediately due to the enormous pressure of the water. This person's action also negativized the torpedo and made the water overflow into the ship, causing the remaining four people to die of thirst or suffocation. A total of 99 people died in the accident. The HMS Thetis was then removed and repaired, then put into the HMS Thunderborn and deployed to the Atlantic Ocean in 1940. In December 1940, the HMS Thunderborn sunk the Italian submarine Capitano Raffaele Tarantini while patrolling the Atlantic Ocean. Two years later, the ship was sent to Mediterranean to destroy Italian military ports as well as destroy the destroyer's docking ships. During this process, it sunk the Upo Ciano cruise ship and the SS Vimineo ship. On March 14, 1943, the HMS Thunderborn was discovered by the Italian Seacocna light cruiser. The captain of the Seacocna was a submarine officer so he knew the enemy's strategy and the location of the surrounding waters. The Seacocna cruise ship detected its spyglass and launched a bomb to destroy the enemy. All of the crew, nearly 2,000 people, died with the HMS Thunderborn. Lý Trường Thành No. 61 is a Type 035G Ming-class diesel-electric submarine built by China in 1995 and equipped with the number 361 for the 12th Submarine Regiment of the North Sea Fleet. Chinese media reported that the ship participated in an exercise in April 2003 in the Boshan Sea region of northeast China. During the exercise, the diesel engine on the ship was shut down incorrectly, causing it to burn all the oxygen on the ship in the cold. All 70 people, including 13 naval students, died with the HMS Thunderborn. It was only discovered by Chinese citizens on April 25 thanks to the spyglass on the surface of the water. The ship was towed back to Hainan Island and then transferred to the Dai Lien port. At first, Plan believed that the ship was an intruder from South Korea or Japan. But when Plan's investigators discovered the ship, they found out that the ship was a second-generation submarine. The first two Type 035 were built in 1975, but the technology was far more advanced than the submarines of the Soviet Union and the United States at that time. Although China used many diesel submarines at that time, they rarely risked sending the ship away from the seas. Due to the lack of modern submarine-building technology, in the 1990s, Chinese submarine-building factories continued to build Type 035G Ming-3 submarines built by Plan in 1995. These submarines were capable of attacking enemy submarines with torpedoes.