The rise of nanometers

Gulf of Tonkin.

The depth of the seabed is around 184 meters.

A huge black fish is quietly lurking here.

Inside Heiyu, many personnel were busy in silence. Captain Ruan Shahe took the lunch box sent by his subordinates and ate in silence.

The deputy captain on the side took his place and began to direct the operation of the submarine.

Although the Kirov-class is known as the black hole of the ocean, China has imported a large number of this submarine, and the other party has long known the voiceprint of the Kirov-class.

Now they are at an ultra-low speed, only about 8 knots per hour, trying to reduce their noise as much as possible to avoid being discovered.

It's a pity that they didn't know that this submarine had been targeted for a long time.

The sea area of ​​​​Beibu Gulf is too small. Compared with the vast Pacific Ocean, it is like a small pond. It was impossible to catch these black fish before. That was because of Kirov's excellent performance and low-speed noise reduction.

At this time, more than a dozen Downwind Ears have been deployed in the South China Sea area, and when the Downwind Ears are used as fixed sonar points, they can activate active sonar mode.

With the assistance of active sonar, these snakehead fish quickly became invisible.

The deputy captain who was driving the submarine carefully adjusted the course. After all, today was different from the past, and they simply could not afford to offend their powerful neighbor in the north.

Suddenly he felt something was wrong, because the passive sonar equipment showed that there were three destroyers nearby, approaching here.

He stared at the instrument nervously and found that the three destroyers seemed to have discovered them and hurriedly adjusted their course and moved to the west side of the sea.

But as soon as he changed direction, the other party also changed direction, as if following him like a shadow.

Feeling that something was wrong, the deputy captain hurriedly pulled Ruan Shahe's sleeve and made a special emergency gesture.

Ruan Shahe suddenly stopped caring about eating and hurriedly stared at the sonar detection panel. Sure enough, there were three green light spots following them like a shadow.

For the next half hour, the two sides were playing hide-and-seek in the sea area, but no matter how Ruan Shahe and the others changed their course or stuck directly to the seabed, they could not escape each other's tracking.

They had no choice but to withdraw from the high seas and return to their own territory.

After returning to the territory, Ruan Shahe was no longer in the mood to continue performing the mission, but directed the submarine to return to its home port.

He had just returned to the home port and was about to report the incident when he discovered that other submarines were also returning to the home port one after another. After discussing with several captains for a while, they all encountered the same situation.

"How the hell did they find us?"

"That doesn't make sense!"

"The Kirov-class is difficult to detect at low speeds. Even if the opponent has Kirov's voiceprint, it cannot be so accurate."

Ruan Shahe was also frightened, but he calmly suggested: "Let's report this matter as soon as possible! Let the superiors have the headache."

"Um."

Everyone summarized the situation and wrote a joint report to report what happened today.

At the same time, the same scene also appeared in several other submarine home ports. This matter quickly attracted attention. After studying it for a long time, I found that I was helpless.

After all, the Kirov-class is already their bottom line, and it is imported from Lucia, so the one they produce is even weaker.

Even the Kirov-class can't hide, so their submarines have basically become useless. After all, submarines rely on concealment. Submarines that cannot be concealed are not even as good as destroyers.

In the next more than a week, Ruan Shahe and others tried several more times. Even if they set off from the home port, they would move forward quietly and at a slow speed. As soon as they entered the high seas, they would be immediately targeted by destroyers.

It was as if there was an invisible eye watching their every move in the dark.

This feeling made Ruan Shahe and others very frightened. In this claustrophobic environment and the terrible pressure, many people even developed serious mental problems.

In the end, there was really no choice but to suspend the submarine cruise mission.

After all, when they are escorted all the way out of the port, the strategic deterrence of submarines is basically zero. If they really fight, it will only be a matter of a few depth bombs.

Seeing that there was no way to save the situation, they did not waste any energy and simply withdrew the submarine.

the other side.

Three marine debris cleaning fleets are divided into several directions to catch marine debris in various areas of the South China Sea.

Near Dongsha Shoal, there are no other islands except a newly filled-in New Dongsha Island.

A garbage cleaning ship responsible for cleaning up the sea area soon discovered some abandoned fishing nets, plastic bottles, etc. The crew member Xiong Kuan activated the salvage system to recover these wastes.

Zhao Xinmin, the data tracker on the side, was holding a special tablet computer connected to the satellite communication system of the cleaning ship, so that detailed feedback could be obtained.

The cleaning ship itself is also equipped with a downwind ear sonar system. Although it is a limited-function version that can only detect marine objects 50 kilometers around, this system is also specially designed to clean up marine garbage.

Gain higher accuracy by sacrificing detection range.

On Zhao Xinmin's tablet, you can clearly see large and small floating objects, submersibles, and fish within 50 kilometers nearby.

"Big Bear, northwest of 10:35, about 450 meters, there is an abandoned tire."

The taciturn Xiong Kuan adjusted the direction, pressed the launch switch, and a large net was thrown 450 meters away.

When the fishing net was pulled up, there were not only tires on it, but also some boat wood, plastic foam, and dozens of fish.

Xiong Kuan, who had been eating fish for more than ten days, felt nauseated when he saw the fish. He threw the fish back into the sea and then dumped the garbage into the garbage storage tank.

The garbage storage compartment is filled with all kinds of strange garbage. Tires, foam boxes, plastic bottles, straws, fishing nets, nylon ropes and the like are more common. There are also a small number of glass bottles, boat logs and tin boxes.

There is even an abandoned inflatable doll, and all kinds of strange things may appear.

Suddenly the captain's loud voice sounded over the intercom: "Everyone, please work harder and prepare to return home at 3:30 this afternoon."

"Boss, why are you going back so soon? There is still one-third of the space in the garbage storage compartment." Zhao Xinmin asked in confusion.

The captain explained: "Typhoon, I just received notification from the maritime department that the outer edge of the typhoon has approached the Zhongsha Atoll."

"All right!"

As soon as everyone heard about the typhoon, they could only avoid the danger temporarily.

After lunch, Zhao Xinmin found a few big targets, preparing to kill one big one before returning to Tuocheng Port.

Around 1:30 in the afternoon.

The garbage cleaning boat arrived near the first target, and after fishing it out, it was found to be an abandoned small hovercraft. Xiong Kuan took a look at the trademark on it and found that it was an ordinary lifeboat.

Near the second target, after going down the net.

Xiong Kuan exclaimed: "It's a big fish, everyone, be careful."

Although they were all equipped with exoskeletons, the thing in front of them was an abandoned torpedo. If the explosive device was triggered, their small boat of more than 5,000 tons would not be able to withstand the damage of the torpedo.

Carefully pulling the abandoned torpedo closer, Xiong Kuan quickly determined which region it was produced in.

"Head, worthless."

"Then detonate it!"

"Okay." Xiong Kuan jumped off the boat on the side, drove to the abandoned torpedo, attached a piece of something similar to a plastic bomb to the warhead, and set it to detonate in half an hour.

Half an hour later, the garbage cleaning boat had already started returning north.

At the same time, a roar was heard more than ten kilometers away. Apparently, the abandoned torpedo was detonated and destroyed.

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