. "Noise contact, target one, direction three, four, and distance forty-five."

As Meng Guangyang broke the heart-pounding silence, the officers and soldiers in the command cabin breathed a sigh of relief, and the stone hanging in his heart finally landed on the ground.

Zhou Yusheng glanced at Meng Guangyang and did not rush to issue an order.

In front of the sonar console, Meng Guangyang looked at the display screen without turning his eyes, noticing the captain's gaze.

Mu Haoyang and Li Xiaoming were a little surprised, not knowing why Zhou Yusheng continued to remain silent.

After several minutes, Meng Guangyang spoke again: "The target course is 155, error 2, speed 12, depth 240, error 10."

When Meng Guangyang reported the situation, Lu Chengfeng marked a blue route on the electronic route and marked the navigation data.

Seeing Mu Haoyang and Li Xiaoming confused, Yang Yuanfan whispered: "Using passive sonar to detect enemy boats, it is necessary to at least two basic navigation parameters at the same time to calculate the direction and speed of the enemy boats."

"Target nature?" Zhou Yusheng finally spoke.

"It's still analyzing, it must be a US military submarine." Meng Guangyang raised his hand to wipe off the sweat from his face. When a few lines of data appeared on the display screen, he said, "It's a 'Virginia'-class attack nuclear submarine, and the noise characteristics match the No. 777's 95% of the same degree."

"What should be here, it's still here." Zhou Yusheng smiled and said, "I didn't expect to meet an acquaintance."

"Acquaintance?" Mu Haoyang asked.

"I encountered it in the South China Sea last year, otherwise I wouldn't have known it was the 'North Carolina'." Zhou Yusheng explained briefly and asked Lu Chengfeng, "How far is it from Troy Peak?"

"Just ahead, less than three nautical miles."

Zhou Yusheng thought for a while and said, "Keep the course and speed, Chengfeng, keep an eye on the right track, and prepare to sit in the sinking place."

Taking this opportunity, Yang Yuanfan introduced to Mu Haoyang and Li Xiaoming what happened in the South China Sea last year.

At that time, the "Shark" had just been delivered to the Navy and was conducting sea trials in the South China Sea.

In the first three months, the Shark had been operating in the waters north of the Zhongsha Islands, and was closely protected by the surface ships of the South China Sea Fleet and the Navy aviation force, without any unexpected situations.

Three months later, the Shark, which completed the offshore sea trial, headed south into the waters of the Nansha Islands, and conducted several key tests such as extreme diving depth. At this time, the Shark encountered the USS. North Carolina for the first time.

Fortunately, the US military did not know that the Shark had entered the Nansha Sea. North Carolina passed by the South China Sea when it was heading to the Indian Ocean to perform combat deployment. When it encountered it, the Shark was conducting deformation modulus detection of the pressure-resistant shell 650 meters below the sea. Therefore, the North Carolina did not find the Shark, but instead caused the Shark to catch it and also tested the performance of the side sonar array.

"It can't show how advanced the Shark is, it's just a little bit lucky." Yang Yuanfan said a little modestly, "If we were testing the speed at that time, instead of floating in the sea, we might have been exposed before we found the Americans."

"Why do you need to sit in a sinking position?"

"Sit down?"

Mu Haoyang glanced at Zhou Yusheng and said, "The 'North Carolina' is dozens of nautical miles away. Can't we find a way to go around the back?"

"How to circle?" Yang Yuanfan smiled and said, "No matter which direction we go around, we have to pass through the side of the 'North Carolina' and enter the detection area of ​​the side sonar. Never underestimate the performance of the 'Virginia' class, especially its sonar detection ability. Even if we reduce the speed to zero, if the distance is too close, the noise emitted by the turbine will expose our whereabouts."

"Can the engine be turned off after sitting down?"

"If you can't turn off, you can only turn off the second circuit. As long as the reactor is still working, the first circuit of the natural cycle must continue to operate."

"Since that's the case, what's the point of sitting in a sinking position?"

Yang Yuanfan was stunned for a moment and said with a smile: "The bottom of the sea is not a piece of iron plate. The surface is covered with mud and sand, dead corals, marine organisms, etc. As long as we move slowly enough, the bottom of the submarine can be buried in the sand, and then some mud and sand will be raised by blowing air. Under the influence of seawater buoyancy, the mud and sand will not settle immediately, but will hang around the submarine, forming a natural sound insulation wall."

"Will you not be discovered by US submarines?"

"In the deep sea, it's not the eyes, but the ears. At this depth, the sea is pitch black, and there is no periscope on the submarine that can work under the sea. Although the North Carolina may find abnormal movements here, the geological activities of the seabed are much more frequent than those on land. There is no vegetation on the undersea peaks, so they often slide and collapse. After passing this level, we can stay here without moving, and wait for the North Carolina to reach our east and then follow from behind."

"This way you can always stay in the passive sonar detection blind spot of the 'North Carolina'." Li Xiaoming added, reiterating, "The Americans will not just send one submarine, there must be several anti-submarine patrol aircraft coming, so we'd better not alert the snake."

“We have only one hour.”

Hearing Zhou Yusheng's words, Mu Haoyang and Li Xiaoming both looked at him.

"The two electronic warfare aircraft took off from Oman. If the P-3c deployed in Djibouti takes off at the same time, it will arrive three hours behind the electronic warfare aircraft." Zhou Yusheng sighed and said, "More than two hours have passed. If we cannot bite the 'North Carolina' in the next hour, we will have to face the anti-submarine patrol aircraft, and the chance of survival will be very slim."

"It's okay to stay behind the 'North Carolina'?"

Zhou Yusheng smiled and said, "The US military has locked our route. Two electronic warfare aircraft have gone east, so the US military must think we are still sailing east. The submarine speed of the North Carolina is not fast, so we must be searching while searching. There are 3,000 kilometers of the nearest base here, so the US military can invest very limited anti-submarine forces. It will not allow anti-submarine patrol aircraft to search for the waters searched by the North Carolina, but will place it in front of the North Carolina, forcing us to slow down or accelerate, creating an attack opportunity for the North Carolina. Following the North Carolina, the probability of survival is the greatest."

"The US submarines may not necessarily go to the South China Sea, right?"

"Of course, there is no need for us to follow the US submarine to the South China Sea. As long as we get to the Octave Strait, we can turn south, bypass the Amindivi Islands, sail eastward from the north of the Maldives Islands, and then head to the Sunda Strait from the south of Sri Lanka." Zhou Yusheng paused for a moment and said, "Anti-submarine patrol aircraft are not submarines, and their continuous patrol capabilities are limited. Flying from Djibouti, even if we refuel in the air, we can only search for more than ten hours at most. After the anti-submarine patrol aircraft returns, there is nothing to worry about."

Mu Haoyang is an outsider in submarine warfare. After listening to the explanations of Zhou Yusheng and Yang Yuanfan, he realized it.

"Old Zhou, we are here." Lu Chengfeng shouted to Zhou Yusheng.

"Open the air blowing system and prepare to sink to the bottom of the sea."

The officers and soldiers in the command cabin were busy. Yang Yuanfan stood next to the navigation console and grabbed a crimson control handle.

Mu Haoyang did not bother them and asked Li Xiaoming: "How to blow the air?"

"Release the high-pressure air in the air tank." Li Xiaoming glanced at Mu Haoyang and said, "Usually, only when the submarine floats, the high-pressure air will be used to blow away the seawater in the ballast water tank, so that the weight of the submarine is less than the displacement. If the air blow pipe is connected to the seawater discharge hole of the water tank, the seawater in the water tank will not be blown away, but the high-pressure air will be directly discharged from the submarine."

"Can the submarine float up after releasing the air?"

"Don't worry, there are spare gas tanks in the submarine, and in emergencies, special equipment can be used to make gas."

Mu Haoyang nodded, and then he felt relieved.

"You haven't been on a submarine before?"

"I've been there twice, but I've stayed in the sailor's cabin and I don't have the chance to communicate with the officers and soldiers on the submarine."

Li Xiaoming smiled and said, "You are better than me. This is my first time riding a submarine."

"first?"

"What, do you think I'm lying to you?"

"Then how do you know so much?"

"You don't have to get on the submarine to know what the submarine looks like, right?" Li Xiaoming smiled and patted Mu Haoyang on the shoulder and said, "People like me are usually very idle. I like reading books, and I read everything. If I read more, I will naturally know more."

"I'm not so free, I have some rest time, and I'm training."

"I have to accompany my girlfriend."

Mu Haoyang was stunned and said, "How did you know I have a girlfriend?"

"How old are you? At this age, you haven't fallen in love yet, that's too different."

"So, are you an alternative?"

Li Xiaoming smiled and shook his head, saying, "Although you special forces officers and soldiers are always doing missions outside or struggling in the camp, your family at least know where you are and what you are doing, and they won't worry about you all the time. I'm different. Even if I don't have a mission, I can't tell others whereabouts, even the closest person. They only know a postal address and a phone number that needs to be transferred three times, and they can't guarantee that I can find me at any time. People like us are not suitable for dating at all."

"That's the case. If I were your girlfriend, if I couldn't find you often, I would definitely be thinking about it."

"Don't worry, you don't have this opportunity."

At this time, the submarine vibrated slightly, and then a dull whistle came from outside the boat.

"Okay, now we have become a rock on the seabed." Li Xiaoming glanced around and said, "If the Americans' ears are not sensitive enough, we can get the lead."

"What if the Americans' ears are sensitive enough?"

Li Xiaoming was stunned for a moment and said, "Then we don't even have a chance to fight back. We will soon be hit by a heavy torpedo filled with hundreds of kilograms of strong explosives. Even if we are not blown to pieces, we will be crushed by the sea water above our heads, and we will definitely die miserably."
Chapter completed!