At this time, the submarine had slowly floated to a depth of only 30 meters from the sea surface.
Since it was a secret infiltration operation, the submarine's underwater lighting was not turned on, but even if it was turned on, it would be of no use as only a small area could be illuminated clearly.
In a place with a water depth of 30 meters, even if you stretch out the periscope and look up in broad daylight, what you will see is hazy, almost like looking through frosted glass.
If you are in the offshore, the sea water will still be lawful, just like the dark green emerald blocking your eyes.
If the sailing depth is deeper, the periscope will see darkness in front of us. After all, the penetration of sunlight in seawater is limited.
Li Zheng followed the team members to the torpedo cabin and was queuing up to get off the boat.
He felt that his heartbeat was much faster than usual, and what he smelled in his nose was a cold and slightly strange smell.
Li Zheng stayed on the boat for a few days and knew that this was due to the use of "oxygen regeneration panels".
When the submarine is sailing, if the depth is at the periscope depth, overboard air will be introduced through the underwater air inlet pipe, and overboard air will be provided to each cabin through the ventilation system on the submarine.
In addition, there is an oxygen-generating device on the boat, which can use electrolysis to produce oxygen for breathing use by sailors in each cabin inside the boat.
It’s just that this can only be done when there is sufficient power. If the submarine has been secretly submerged, or if it is sailing in a specific sensitive sea area and needs to use electric propulsion to shut down the diesel engine to avoid noise, everything on the boat is unnecessary. All power-consuming equipment will be temporarily shut down, such as air conditioners and oxygen concentrators. At that time, the submarine will need to use something called an "oxygen regeneration board" to supply oxygen.
The chemical composition of this thing is actually very simple, it is potassium oxide or sodium oxide, which can absorb the carbon dioxide exhaled by the crew and release oxygen.
The structure of the "oxygen regeneration device" is actually very simple. It looks a bit like a toaster that toasts slices of bread. Of course, the size is much larger. The "oxygen regeneration medicine board" is in the shape of a gypsum board. When in use, the usually sealed medicine board is unsealed and inserted. Just put it in the tank of the "Oxygen Regeneration Device".
Each cabin of the submarine has a carbon dioxide analyzer. When the carbon dioxide concentration reaches 0.8%, the "oxygen regeneration device" must be activated.
There are 12 people in the team, divided into four three-person groups and queuing up to enter the cabin.
A group of three people is also very particular.
Two people can enter a torpedo tube at a time, and two people must be responsible for the safety of a tube at the same time.
Therefore, in the three-person team, one of the two people on the line is the "back", assisting the fish operator in the torpedo room and assuming the role of safety officer. Once any accident occurs when the team members enter the torpedo tube for water injection, knock the tube The safety officers and fish operators outside behind the wall will work together to reduce the pressure and open the torpedo tube cover to pull the people in distress out to avoid accidents.
After the first two groups successfully exit the cabin, the remaining two team members will enter a torpedo tube and climb out, while the two fish operators will work together to tackle a tube.
Xiao Jun deliberately stayed in Li Zheng and Hou Jun's group this time.
After all, both of them are newcomers. Fortunately, Hou Jun can't help but whether Li Zheng can climb out is still a question.
This training is brutal.
Xiao Jun has seen soldiers in the past who couldn't climb out of the pipe no matter how hard they tried.
It's the kind of fear where you can't control yourself, and you have to give up in the end.
Many people are fine when they climb into the pipe. Problems are most likely to occur when the gate at the back is closed and then filled with water.
Because the pressure will slowly rise when water is injected, the human body will bear increasing pressure. Taking the current depth of 30 meters as an example, the pressure will be four times greater than the water surface!
In addition, the torpedo tube is eight meters long and has a diameter of only 53 centimeters. If a person is wearing a diving suit and wearing equipment, it is completely like being trapped alive in an iron coffin. It is also an iron coffin that is very narrow and difficult to turn around.
This kind of fear is unbearable for normal people, let alone Li Zheng, who once had a mental disorder.
Li Zheng and Hou Jun's group are in the middle.
The reason why it is arranged in the middle is also the result of Xiao Jun's careful consideration.
At least the people in the front were able to get out of the cabin smoothly, which was more or less an encouragement to the group behind them.
Every year when new people perform this kind of practical operation, they will be placed in the middle.
The first two groups left the cabin very smoothly.
It was Li Zheng's turn.
"Don't be stunned, hurry up."
Xiao Jun was behind Li Zheng and reached out to pat his shoulder.
Li Zheng took a deep breath, stepped through the hatch and entered the torpedo room.
Li Zheng is very familiar with the environment here.
He has trained many times on land and in a simulator.
But there is one difference. There are only torpedo tubes in the simulation cabin, not torpedoes.
But here is a real thing, lying on the shelf, ready for quick reloading and firing.
When he thought of the explosive power of this thing, Li Zheng couldn't help but take a few more glances.
Most torpedo tube sizes around the world are of three calibers - 324mm, 533mm and 650mm (super heavy).
What lies in front of Li Zheng is a 533-caliber torpedo tube.
Xiao Jun took the initiative to stand on the side of the torpedo tube, first checked Li Zheng's diving equipment, and then asked him: "Are you ready?!"
Li Zheng gave a thumbs up: "Ready!"
Xiao Jun did not hesitate and opened the launch tube gate together with the fish operator.
"Don't be afraid! Go in! If anything happens, hit the pipe immediately! I will get you out."
The torpedo tube was dark, and only a little reflection on the tube wall could be seen.
Li Zheng felt his mouth was dry, but he still gritted his teeth, lowered his head, and got in.
When Li Zheng was halfway in, Xiao Jun and the operator pushed him in smoothly.
"Climb! Climb forward!"
Xiao Jun approached the mouth of the pipe and shouted into it.
In the torpedo tube, Li Zheng was lying on the cold tube wall.
Because it is in the sea, the steel on the pipe wall feels very cold.
It was still dark ahead, and the body could feel the narrowness of the torpedo tube, but the eyes could not see the end of the torpedo tube - the valve there was closed, and of course it was impossible to open it, otherwise the seawater would rush in.
Li Zheng began to crawl forward slowly.
He had a strange feeling. Every time he climbed a little bit forward, even a little bit, he seemed to feel that there was a cliff ahead. If he climbed a little bit further, he would suddenly fall and be doomed.
The psychological pressure is increasing.
Li Zheng felt that his breathing was a little difficult.
For a moment, the thought of giving up flashed across my mind like a shooting star.
"Can not give up!"
He warned himself silently.
We have come this far, there is no turning back.
Even if you die, you will die in this pipe!
After the fierce force came up, Li Zheng gritted his teeth and crawled forward about two meters.
Then he heard movement behind him, and someone climbed into the tube after him.
It must be his old squad leader Hou Jun.
At this time, a warmth suddenly surged in his heart.
No matter where he is, Hou Jun is a trustworthy comrade, worthy of trusting his old squad leader.
The movement behind finally stopped.
Li Zheng knew that Hou Jun must have entered the tube.
Then a bang was heard, and the entrance gate closed.
At first there was a little light coming from the torpedo room, but now there was no light at all.
Totally black.
The kind of black that makes you unable to see your fingers.
Suddenly, Li Zheng heard the familiar sound of water.
That's right.
It is exactly the same as when practicing in the simulation cabin. After entering, the gate is closed and then water is filled.
One of the most important procedures for climbing the pipe when filling water.
Many soldiers often cannot bear the feeling of being gradually "submerged" and the sudden increase in pressure at this time, so they choose to give up training by tapping on the wall of the pipe.
The water is very cold.
This is serious sea water.
Li Zheng felt the water slowly covering his body.
First a third, then half, then all...
The oxygen mask began to supply air, but my body slowly began to feel it, because when the water was full, the pressure began to increase.
Now it needs to be pressurized to the same pressure as the depth of 30 meters outside, then the front gate will open, and then you can climb out of the pipe and enter the sea.
Although this process only lasted less than twenty minutes, it felt like two years.
The training of climbing a pipe is dangerous. Ordinary submariners climb the pipe just to escape, while members of the special forces must carry equipment and equipment when climbing the pipe, and they wear different diving suits, which is more dangerous than ordinary sailors. is much higher.
This is a dangerous subject. Once an accident occurs, it can range from eardrum perforation to death from internal bleeding and suffocation...
In order to dispel his desire to fight hard, Xiao Jun once said that someone died in an accident in this subject.
Li Zheng could hear his own heartbeat.
There was also heavy and somewhat rapid breathing.
He stretched out his hand and grabbed hard on the wall of the pipe.
The fingers are trembling slightly.
Several times, he almost wanted to knock on the wall of the pipe.
The surrounding cold tube walls seemed to be slowly squeezing toward the center, squeezing themselves into pulp.
This caused him to have some difficulty breathing.
Typical claustrophobic reaction.
Fortunately, it's minor, at least he hasn't collapsed yet.
At first, Li Zheng was still counting the time in his mind.
Because when the time is up, the front hatch will open after the pressurization is completed. As long as you climb out, everything will be a success!
But he doesn't know since when, he has forgotten to count the time silently.
I muttered one sentence over and over again in my mind, trying to keep my mind clear.
"Hold on, hold on!"
He felt that his head was starting to swell, and it seemed to have reached a critical point. The hands that were digging into the wall of the tube were shaking more and more violently. Although the temperature here was extremely low, Li Zheng actually felt that he was sweating and feverish...
Soon after, there was a buzzing sound in his ears, and all he heard was noise, instead of the deathly silence.
This is simply a kind of torture, a kind of suffering.
Finally, he felt like he couldn't hold it in any longer because he couldn't breathe any more oxygen.
I don’t know if there is something wrong with the diving device or the oxygen device...
Hou Jun, who was lying behind him, suddenly felt Li Zheng in front of him struggle violently.
He was startled.
Did something happen?
collapsed?
He immediately raised his hand and wanted to knock on the wall of the pipe.
Please give me a monthly pass, please give me a monthly pass!
(End of chapter)
