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Thermite underwater cutting is indeed the fastest underwater cutting method, but it is also the most violent cutting method.

This kind of cutting method is usually used for the cutting of ultra-thick steel plates, because this method is simple and violent, so don't expect how regular graphics can be cut with this cutting method.

For example, if plasma arc cutting or arc-oxygen/steel pipe cutting methods are rigorous meticulous paintings, then this thermite cutting method is an impressionist painting...

But using this method to break open the steel plate of the underwater gate of the secret base is the most suitable. Yang Jing didn't want to cut this door into any regular pattern, as long as the steel plate that could break the door could penetrate people, it was OK. As for the opening of the hole, it didn't matter whether it was round or square.

With the cooperation of Yang Jing, George Cruise melted this 120 mm thick steel door into a large hole with a diameter of one and a half meters in less than half an hour.

The thickness of this steel door exceeds Yang Jing’s estimate. The 120 mm thick steel plate is enough to serve as the front armor of a medium-sized tank in World War II. It is enough to testify that Onishi Takijiro, who built this base at that time, attached great importance to this base.

But Yang Jing estimated that the moment the gate was broken open, the sea water outside the gate did not rush into the gate. Obviously, there was also sea water inside the gate.

When Onishi Takijiro built this secret base back then, it was obvious that he had to use submarines to transfer and transport property from various places into the base. After all, this kind of base hidden underwater is the most concealed. It was almost impossible for anyone to find here more than 70 years ago.

Therefore, this kind of underwater base cannot completely block the water. It must be able to allow the submarine to dive in and float smoothly. Therefore, there should be a large pool inside the gate to facilitate the submarine to float up and then be transported. The property was shipped out.

Under this circumstance, George Cruise naturally cannot 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 sea water, so water will not be poured in. People who play in the movies can take off their diving suits immediately when they enter such caves. That's just nonsense.

The simple truth is that 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. It seems that 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 the sea water, the nitrogen in his body has already been decomposed into his blood at this time.

If he swims in and immediately goes ashore from the cave and takes off the diving suit, directly exposed to the same air pressure as the sea level, it is equivalent to that he came to sea level instantly from the bottom of the sea at a depth of fifty meters, and his blood The helium gas will gush out from the blood due to the rapid decrease in air pressure, and eventually form a large number of bubbles in his lungs. In severe cases, it will directly burst his lungs!

This is called decompression sickness.

Although it’s still unclear what it looks like behind the gate, for safety reasons, it’s better for George Bruce to rise slowly and honestly according to the regulations, so that the pressure in the body slowly adapts to the lower and lower air pressure, so as to avoid it. The emergence 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. They would slowly float up together and finally return to the surface of the sea.

Yang Jing has an energy body, so he naturally wouldn’t worry that he would change into decompression sickness. So after seeing George slowly floating up, he turned on the waterproof spotlights on the top of his head and shoulders. Drilled in the big melted hole.

The quality of the seawater near the Maug Archipelago is quite good. When cutting the gate outside, you didn’t even need to turn on the lights, because with this excellent seawater quality, sunlight can even penetrate more than fifty meters of seawater. Yang Jing can see things at this depth.

But the inside of the gate was completely dark.

The powerful waterproof spotlights on the head and shoulders can illuminate more than ten meters away even in the water. Compared with the outside of the gate, you can see a group of tropical fish swimming freely. After entering the gate, it changes completely. Become a silent and dark world.

It’s not surprising that you can’t even see the shadow of a fish behind the gate. In terms of the degree of sealing of the gate, the sea water behind the gate probably won’t communicate with the outside sea in the past seventy years. , How can there be fish?

Not long after swimming in, Yang Jing began to float up quickly. It is estimated that after about 30 meters, Yang Jing only felt light on his body, and his head and upper body were already exposed.

The surrounding area is still invisible, but because the spotlights on the top of the head and shoulders are not blocked by the sea, they can now directly shine 30 to 40 meters away, so Yang Jing can easily see the distance from him. The berth made of reinforced concrete eight meters away.

The berth is about six or seven meters above the surface of the water. This height is just enough to allow the submarine to float up, and the position of the bridge is level with the berth to facilitate the transportation of goods. On the west side of the slipway, there is a ladder made of steel bars to climb up the slipway.

But Yang Jing did not rush to step on 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 cave. It should be caused by the magma erupted from the depths of the earth's crust when the volcano erupted ~www.readwn.com~ with a large amount of gas.

This situation is common in volcanoes, because when a volcano erupts, the huge heat will melt the rocks of the mountain. At this time, once there is a large amount of gas, it will easily form in the soft mountain. Huge void. And if the impact of the gas is not enough to break through the magma, when the magma cools to form rocks, the gas will be left in the mountain forever, forming this strange cave.

The huge cave in front of me was obviously formed like this, after all, just a few meters away is the huge crater.

The top of this cave is 30 meters above the water. As for the length and width, Yang Jing can't see the end. However, in the middle of World War II, the length of the main submarines of the Japanese navy was about 100 meters, and the length of this large pool for submarines to enter was at least more than 100 meters.

The width of this large pool is about fifteen meters, which is about the same as the width of the gate. The widest Japanese submarine during World War II was the first-class patrol submarine built by the U142 submarine technology imported from the Germans. This submarine with 1970 tons (on the water)/2791 tons (underwater) has the widest hull. At 9.22 meters, it is the widest submarine among all the models of the Japanese army.

Therefore, the 15-meter-wide gate and pool were enough for Japan's widest submarine to enter safely.

In this huge cavity, except for the slipway which is constructed of reinforced concrete, almost all of Yang Jing's sight is the most primitive rock wall. Obviously, this secret base was a natural cave that Onishi Takijiro accidentally discovered back then, and then slowly transformed it into such a secret underwater base.

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