The door of the courtyard house has been welded dead

"Ding ding ding~~~!"

The red warning lights on the bulkhead flashed frequently, and the sound of hammers striking bells echoed throughout the submarine's engine room.

On the command side, the captain walked to the submarine's control panel, his eyes scanning the panel before quickly focusing on the indicator lights on the instrument panel, pinpointing the compartment where the problem occurred.

He picked up the intercom hanging on the control panel, and his calm and fearless voice echoed throughout the entire submarine compartment.

"The seawater pipeline in the No. 1 torpedo compartment is damaged. The compartment is sealed off. The pipeline is quickly bandaged."

"Flooding in compartment one, open the valve in ballast water compartment six to allow water in, personnel from compartments four and five, enter compartment six to maintain the balance of the submarine!"

"Car gear shift, reverse slightly!"

"Repeat it...!"

The intercom transmits the captain's commands through the dense network of circuits within the submarine to the speakers in each compartment in a timely manner.

The forward, intermediate, and reverse movements of a submarine cannot be accomplished by the captain's single command. It requires a whole team of personnel in the command center and engine room to coordinate and cooperate. The speed of adjusting the propulsion system is not as fast as that of a car, and it has the same sluggishness as a ship.

Jiang Defu, who was lying on the upper bunk and asleep, immediately threw off his thin blanket and jumped down from the upper bunk after the red light next to him flashed. He then picked up his military cap and put it on his head.

With a flick of his finger, he pulled up his heel and immediately sped towards his torpedo compartment. Under the red light, his face looked unusually serious.

On the bed, the pillows were askew, and the thin green blanket wasn't folded into a neat square; everything was based on practical considerations.

Moreover, there are no unnecessary military police units inside the submarine, even though nuclear submarines are large in size, their internal space is actually quite cramped.

It can be said that each person has their own exclusive position, and even the beds for resting are set up according to the rotation system, making the most of the space. As for the work style...

It all depends on whether the military police in the area dare to confront the submariners after they go ashore for resupply; that would be the end of it.

Closed management, closed training, closed combat environment—even breathing fresh air is a difficult thing for submariners.

The cabin might smell of engine oil, rubber, sweat, or anything else, but there's no fresh air. Once the cabin is closed like this, you can cruise underwater for a month or even two months.

After maintaining a state of alert, they even had to control the volume of their voices. The resentment they felt after coming ashore was greater than that of ghosts, and the military police would turn around and run away when they saw them.

As part of the initial acclimatization training, although the ballistic missile nuclear submarine has not yet been officially launched, the hatches have been closed so that the 120 officers and soldiers can get used to life inside the submarine. Most of them have not seen the sun for a very long time.

Grasping the handrail at the top of the round hatch, I slid in, my legs first entering the next compartment, followed by my body. Once I was steady, I let go of my hands so that my body could stand up straight.

This is a unique way for submariners to enter the compartment. Once mastered, it looks very smooth and can effectively reduce the time spent moving between compartments.

After Jiang Defu entered the second compartment, the circular hatch suddenly closed behind him. Behind the hatch, soldiers could be heard frantically turning the steering wheel. The same thing happened in front of him; the soldiers in the second compartment were closing the passage to the first compartment.

Okay, these hatches are highly airtight, and are locked little by little by turning a circular valve. If a hatch malfunctions and the pipe damage is not resolved in time, then what awaits them is seawater filling the hatch.

The only escape route to the next compartment was locked, and the fate of any personnel left inside was predictable.

This is the unique survival rule of submarines. Regardless of whether it is cruel or not, if a compartment is flooded and is not isolated, it will inevitably lead to the entire interior of the submarine being flooded.

To protect the lives of their comrades, the commanders and soldiers in the damaged compartments either had to fight with their backs to the wall, physically sealing off the broken pipes to prevent seawater from flowing back in, or they had to sacrifice themselves to save the submarine.

The torpedo compartment is located at the very front of the nuclear submarine and is the first compartment. With the increase in "water intake", the submarine, located 200 meters underwater in the East China Sea, unsurprisingly became top-heavy and its overall balance was disrupted.

As the propellers rotate, the entire submarine will continue to move towards the seabed at an extremely high speed. The maximum diving depth of this submarine is designed to be 300 meters.

It's not that once you exceed 300 meters, the submarine will immediately be compressed into a lump of steel by the pressure of the seawater. Rather, there is a gradual process. This gradual process is the time for the crew in this compartment to save themselves, and it is also the time for the captain to give orders.

In a simulated accident, the bow of the ballistic missile nuclear submarine began to slowly sink. To maintain the balance of the submarine, the ballast tanks near the stern began to take in a large amount of water to alleviate the nose-heavy posture.

If the rate of water ingress into the ballast tanks is slower than that into the pipe damage area, the weight of the submarine crew must be cleverly utilized to accelerate the balancing process.

Upon hearing the sound from the loudspeaker following the captain's command, personnel from the mid-to-rear compartments, except for those in key positions, rushed through the circular passageway to the stern, using their body weight to add weight to the stern of the submarine.

"240 meters!"

"260 meters!" "One compartment, you have 60 seconds left!"

The captain's emotionless voice was transmitted through the loudspeaker to the torpedo room.

Multiple damaged pipes were hissing and spewing steam (simulating water leaks). After the hatch was closed, the limited number of personnel in the torpedo room could only address the pipe damage points one by one.

Either a waterproof partition is used to hold it in place, and then hydraulic support columns are used to tighten it, or a special pipe damage repair kit is used to put it on and tighten the screws. In any case, no tape is used to stick it on.

The pressure underwater is very high, and the pressure inside the pipelines of a submarine is even higher. If there were multiple pipeline damages, the water level in the torpedo compartment would have reached the waist of the crew, which would greatly reduce both the speed of movement and the speed of repair.

Undeterred by the danger, Jiang Defu personally took charge, picking up the intercom to communicate with the adjacent cabin and beginning to direct operations, understanding the dynamic situation within the cabin and reporting back to the command center.

"Attention, personnel in the first compartment, this is Jiang Defu. Focus on resolving the area with the largest pipe leak, currently at a depth of 270 meters. We have 30 seconds left. Please do not give up."

With one eye fixed on the hands of his watch and the other on the depth gauge, Jiang Defu took a deep breath, feeling as if he were actually there. He could even hear the creaking sound of the submarine's outer steel plates being squeezed by the water pressure at a depth of 270 meters.

"Loss No. 1 has been resolved; we are now addressing Losses No. 2 and No. 3!"

The announcement from the cabin door brought a sigh of relief to Jiang Defu, who was standing at the doorway. Beads of sweat dripped from his forehead onto his dark blue military uniform.

"Reporting to the captain, requesting the engine room to prepare. One forward, one backward in twenty seconds!"

The bubble in the level gauge, which displays the boat's attitude, gradually begins to move towards the center, indicating that the boat is about to reach a horizontal position.

To escape the downward plunge, the propellers had to be activated until the weight of the aft compartment exceeded that of the forward torpedo compartment, causing the submarine to begin to tilt upwards. At that point, the propellers would begin to work, propelling the submarine diagonally upwards.

"The damage to pipeline No. 2 has been resolved...!"

Inside the No. 1 torpedo compartment, the water inflow began to decrease significantly, but this did not mean that the work of controlling pipe damage could be relaxed. The water inflow had reached shoulder level, and personnel movement, control of damaged pipes, and even preparations for underwater repair operations after holding their breath were all necessary.

That means it will be even more difficult. But if the last point of pipe damage cannot be resolved, all the previous work will be in vain. As seawater fills the entire torpedo compartment, the last bit of air inside will be deprived, and the pipes will be unable to bring in air. The shackles of death will gradually tighten around the throats of everyone in this compartment.

The submarine gradually adjusted its attitude to be nose-light and foot-heavy. As the propellers began to operate, the sinking speed was gradually offset, and the submarine's depth reading on the instruments began to decrease little by little.

The submarine began to surface, but very slowly. As the last point of pipe damage was repaired, a large amount of water entered the torpedo compartment, but there was still space, and oxygen could still be delivered through the pipes.

The entire crew in the first compartment have temporarily "survived," but for them to truly survive, they still need to solve the problem of the seawater entering the compartment, as well as many other issues...

"From the discovery of the pipe damage to its complete repair, it took two minutes and forty-three seconds. I hope this speed can be even faster!"

"Currently, the weapons compartment inside the submarine is not yet loaded with weapons. The weight used during training does not match the real marine environment. There are also many real-world situations. The difficulty of training does not equal the difficulty of the battlefield."

"Torpedoes, mines, and depth charges are all potential threats we may face. Flooding of multiple compartments is also possible, along with fires, injuries, and even ocean faults and eddies!"

"This time, although we barely managed to 'save' it, it was only under the condition that one compartment was flooded. If the situation had been at the extreme depth of 300 meters, we would probably be corpses in a 'coffin' by now."

Inside the submarine's mess hall, a meeting was underway. Indeed, the mess hall served as the submarine's conference room. Commanders were taking notes, recording their reflections on the recent damage control training.

"Jiang Defu".

"Arrived~!"

"Regardless, we barely passed this training. Thanks to the efforts of the crew in the first compartment, the entire submarine was preserved. I hope to keep up the good work!"

"Yes~!"

Jiang Defu raised his hand to wipe his cheek, his face showing no joy, but rather a lingering fear.

Back in the deep blue sea, but the job now is much harder than that of the head of the security section or the head of the security department. It's full of challenges, and if you make a mistake, the entire crew will suffer.

But it is precisely because of this challenge that we feel even more how important the burden on our shoulders is.

"The next training focus for all officers and soldiers on the submarine is going to the toilet. Every single person must master the technique of opening and closing the toilet valve. Which valve to open first and which valve to close will be a key assessment for me. This is not a joke. If you don't know how to use the toilet properly, it's like opening the sea valve!"

"Remember this, everyone! There will be a test on how to use the toilet!" (End of Chapter)