Underwater cutting with thermite is indeed the fastest way to cut underwater, but it is also the most violent.This cutting method is usually used in the cutting of ultra-thick steel plates, because this method is simple and violent, so it is expected that this cutting method can cut how regular the shape can be.For example, if the plasma arc cutting or arc-oxygen steel pipe cutting method is a rigorous fine stroke, then this thermite cutting method belongs to the Impressionist painting, but this method is the most suitable way to break through the underwater gate of the secret base.Yang Jing doesn't want to cut this gate into any regular pattern, as long as the steel plate that can break this gate can drill into people, it doesn't matter if the hole is round or square.George Cruise, with the cooperation of Yang Jing, took less than half an hour to melt out a large hole with a diameter of one and a half meters in the steel door, which was 120 millimeters thick.The thickness of this steel door exceeds Yang Jing's estimate, and the 120 mm thick steel plate is enough to serve as the frontal armor of a medium tank in World War II, but it is used here as a gate, and it is also a door with such a large area, which is enough to witness the importance that Onishi Takijiro, who built this base at that time, attached great importance to this base.But Yang Jing estimated the same, the moment the gate was broken, the seawater outside the gate did not pour into the gate, and it was obvious that the inside of the gate was also seawater.When Onishi built this secret base, it was obvious that he wanted to use submarines to transit and transport looted goods from all over the world into the base.After all, this kind of underwater base is the most hidden, and more than 70 years ago, it was almost impossible for anyone to find it.Therefore, this kind of underwater base cannot completely block the water, and it must allow the submarine to dive in and float smoothly, so there should be a large pool inside the gate to facilitate the submarine to float and then transport the transported property.In this case, George Cruise naturally could not follow in, because there is air in this kind of submarine cave, the air floats on it, and the air pressure can resist the pressure of the seawater, so the water will not pour in.The kind of person in the movie who enters such a cave and can immediately take off his wetsuit is pure nonsense.It's very simple, although the seawater will not be poured into this kind of submarine cave, the pressure of the seawater in the cave is still very high, as if at this depth, George Bruce is actually under pressure of up to five atmospheres, and he has been breathing with scuba, because of the pressure of seawater, the nitrogen in his body has already decomposed into his blood at this time.If he swam in and immediately went ashore from the cave and took off his diving suit, and was directly exposed to the same air pressure as the sea level, it would be equivalent to him coming to the sea level in an instant from the bottom of the sea at a depth of 50 meters, and the helium in his blood would gush out of the blood due to the rapid decrease in air pressure, and eventually form a large number of bubbles in his lungs, which would directly burst his lungs in serious cases!
This is called decompression sickness.Although it is not clear what exactly it looks like behind the gate, for the sake of safety, it is best for George Bruce to slowly rise according to the regulations, so that the pressure in his body can slowly adapt to the decreasing air pressure to avoid the appearance of decompression sickness.George waved his hand at Yang Jing and began to float slowly, Clark McCann was still waiting for George at a depth of about thirty meters, and the two of them would slowly float together and finally return to the surface of the sea.Yang Jing has an energy body, so he naturally won't worry that he will change to decompression sickness, so after seeing George slowly floating, he turned on the waterproof spotlights on his head and shoulders, and as soon as his body moved, he drilled into the big hole that had just melted.The quality of the sea water near the Maoge Islands is quite good, and when the gate was cut outside just now, there was no need to even turn on the lights, because under this excellent sea water quality, the sunlight could even penetrate the sea water more than fifty meters deep, allowing Yang Jing and the others to see things at this depth.But inside the gate was completely dark.The powerful waterproof spotlights on the top of the head and shoulders can shine more than 10 meters away even in the water, compared to the fact that you can see schools of tropical fish swimming freely from time to time outside the gate, after entering the gate, it completely becomes a silent and dark world.It is not surprising that there is not even a shadow of a fish behind the gate, and in terms of the degree of sealing of this gate, the sea water behind the gate may not communicate with the sea water of the outside world for more than 70 years, so how can there be fish?
Not long after swimming in, Yang Jing began to float rapidly, and after about thirty meters of floating, Yang Jing only felt that his body was light, and his head and upper body were already exposed to the water.The surroundings are still invisible, but the spotlights on the top of his head and shoulders can now directly shine thirty or forty meters away because there is no barrier from the seawater, so Yang Jing can easily see the reinforced concrete slipway seven or eight meters away from him.The slipway is about six or seven meters above the water, which is just enough for the submarine to float up and the bridge is at the same level as the slipway, which is convenient for transporting cargo.On the west side of the slipway, there is a ladder made of steel to climb up the slipway.But Yang Jing did not rush to the slipway, but continued to step on the water to keep his body balanced, and began to look around.This submarine cave is obviously a huge naturally formed cavern, which is supposed to have been formed by the magma that erupted from the depths of the earth's crust during the volcanic eruption, mixed with a large amount of gas.This is a common occurrence in volcanoes, because when a volcano erupts, the huge heat melts all the rocks in the mountain, and once a large amount of gas is present, it is easy to form a huge cavity in the soft mountain.And if the impact of the gas is not strong enough to break through the magma, when the magma cools and forms rocks, these gases will be left in the mountain forever, forming this strange cave.The huge cavern in front of me was obviously formed in this way, after all, just a few meters away was the huge crater.The top of this cave was thirty meters above the water, and as for the length and width, Yang Jing could not see the end.However, in the middle of World War II, the length of the main submarines of the navy was about 100 meters, and the length of this large pool for submarines to drive into was at least more than 100 meters.The width of this large pool is about fifteen meters, about the same width as the gate.During World War II, the widest submarine of the Japanese army was the first-class submarine cruiser built by the U142 submarine technology imported from the Germans, which has 1970 tons (water) and 2791 tons (underwater) submarines, with a maximum hull width of 922 meters, which is the widest submarine of all models in the Japanese army.Therefore, the fifteen-meter-wide gate and pool were enough for the widest submarine of my time to enter safely.In this huge cavity, except for the slipway, which is made of reinforced concrete, almost all of the original rock walls as far as Yang Jing's eye can see.Obviously, this secret base was a natural cave that Onishi Takijiro accidentally discovered back then, and then slowly rebuilt into such a secret underwater base.