.Like air combat before missiles appeared, submarine warfare pays great attention to combat position.

If the performance of the two submarines is not much different, the quality of officers and soldiers is equal, and the probability of the side that occupy a favorable position winning is almost 100%.

For any submarine, the rear and below are most vulnerable to attack.

If the speed is slower than the opponent and is bitten by the opponent from the back, the possibility of getting rid of the attack is almost zero. If the depth of the dive is not as good as the opponent, and the opponent is allowed to enter from the bottom, the possibility of turning the situation around is also very slim.

During the Cold War, the US military suffered a lot and suffered heavy losses as a result.

On April 10, 1963, the short-lived "Trouter Shark" conducted a deep-submarine experiment in the western Atlantic Ocean, and a Soviet Navy attack nuclear submarine broke in. The "Trouter Shark" immediately ended its maritime experiment and dealt with the Soviet submarine. Because the maximum submarine depth was not as deep as that of the Soviet submarine, it was occupied by the Soviet submarine in the confrontation, so the "Trouter Shark" had to seek help from nearby US anti-submarine warships and anti-submarine patrol aircraft.

This move not only did not scare away the Soviet submarines, but also annoyed the opponent, allowing the Soviet submarine to drill under the "Terret Shark", then floated up urgently, crashed into the pressure-resistant shell of the "Terret Shark", and drew a crack more than 20 meters long, causing water to enter the three watertight compartments. The "Terret Shark" never floated to the water again, and the Soviet submarine also lay in the dock for more than half a year after returning to Murmansk.

Although more than 20 years later, Cia avenged a revenge for the US Navy and sank the "Communist Youth League" that had been in service for a short time, the incident that happened on the "Trout Shark" made the US Navy unforgettable and had a very profound impact on the design ideas of the US submarines. Later, the "Los Angeles" and "Sea Wolf" class that served were of great importance to speed and depth, and even sacrificed other performance for this.

Ramons is not a fool. After Rodriguez said that, he guessed the intention of the "unidentified" submarine.

It is no secret that submarines of various major powers are confronting in the deep sea. Not to mention major powers that are hostile to each other, even the allies will not give up the opportunity to tease their opponents.

Not long ago, a British attack nuclear submarine collided with a French strategic nuclear submarine on the Atlantic Ocean.

Although both Britain and France announced that it was an accident, because the noise level of both sides was very low and the patrol routes overlapped, they failed to detect the other party in time, but these were used to perfunctory public lies. The speed of strategic nuclear submarines was very slow when patrolling, and the cruise speed of attacking nuclear submarines would not be very fast. There were high-frequency active sonar on British and French submarines, which was enough to find the oncoming submarines. The main reason for the collision between the two ships was that the British attack nuclear submarines regarded French strategic nuclear submarines as the target of tactical drills, and they were not kind enough to provoke the arrogant Frenchman. As a result, the strategic nuclear submarines hit the attack nuclear submarine head-on with their advantage of tonnage.

As long as there is no weapon used, neither party involved in the collision under the sea will cause great trouble.

The "unidentified" submarine missed the opportunity to attack the North Carolina several times, and did not approach the North Carolina until it was nowhere to escape. Obviously, it did not want to use weapons first, but it did not mean that it would let the North Carolina go. As long as there was no choice, the "unidentified" submarine would make the North Carolina go by impact, and even kill the North Carolina.

If the opponent is allowed to hit from below, the North Carolina will not end much better than the Long Tail Shark.

Ramons had no choice but to adjust his tactics in time and launch an attack before the "unidentified" submarine takes advantage of it.

To adjust the tactics, you must first adjust the search method.

The method is very simple, just change the bqq-10 attack sonar to passive working mode.

As long as the "unidentified" submarine is close enough and is sailing at high speed, the noise it emits can be intercepted by the attacking sonar.

At such a close distance, you don’t need to know the distance of the target to launch the torpedo.

The North Carolina suddenly became quiet, and the officers and soldiers on the Shark were scared, and Zhou Yusheng stood up even more excited.

"What's going on?"

"The target turned off the attack sonar!"

Zhou Yusheng couldn't help but tremble because he knew that the "Shark" had been exposed.

"Old Zhou..." Yang Yuanfan also reacted immediately.

"I know," Zhou Yusheng pressed his hand and stopped Yang Yuanfan, saying, "Enter attack parameters for torpedoes and prepare for launch."

Li Xiaoming's brow jumped a few times and said quickly: "Captain, this is our only chance!"

Zhou Yusheng waved to Yang Yuanfan before saying to Li Xiaoming: "I know that the Americans have discovered us, and maybe they have fired torpedoes, but..."

"Captain, the sound of water injection of the torpedo tube!" Meng Guangyang suddenly screamed loudly. "The target has opened the front cover of the torpedo tube, whistling at high frequency, and has launched the torpedo!"

Zhou Yusheng was shocked and rushed to the sonar console with big strides.

"Torpedo 2, speed thirty-five...forty-five...fifty-five...fifty-five, reaching the maximum speed, reaching five nautical miles, approaching at high speed." Meng Guangyang finished reporting the situation in one breath and looked back at Zhou Yusheng.

In the command cabin, all the officers and soldiers looked at the captain.

Zhou Yusheng thought for a moment and said, "The left rudder is full, fast forward ten, and advance at full speed. The first 15 is lower, the tail 15 is higher, the standard depth is 65, and the torpedo bait bomb is ready to launch a torpedo bait bomb."

"Why don't you fight back?" Li Xiaoming couldn't help it anymore.

"It's too late." Zhou Yusheng glanced at Li Xiaoming and asked other officers to execute the order immediately, and then said, "Our purpose is not to sink the 'North Carolina', but to send you back safely. As long as there is still a glimmer of hope, I will not give up."

"If we must die here, we can't be cheaper than the Americans." Li Xiaoming rushed to the tactical table and started fiddling on it.

"What do you want to do?"

Seeing the situation, Mu Haoyang rushed forward and pulled Li Xiaoming away.

Li Xiaoming did not lose his mind, but was a little impulsive. After being pulled away by Mu Haoyang, he struggled hard for a few times, and then he calmed down after it was ineffective.

Compared with Mu Haoyang, Li Xiaoming is much thinner and much less powerful.

There was silence in the command cabin, and everyone was watching Zhou Yusheng and Li Xiaoming.

"Lao Zhou, reaching the maximum depth, heading one by one, and speed twenty-four." Yang Yuanfan broke the silence and said, "What should I do now?"

"Close the beginning and end to maintain the course." Zhou Yusheng glared at the indignant Li Xiaoming, sat in the captain's position, tied up his seat belt before saying to Lu Chengfeng, "Calculate the torpedo impact time."

Lu Chengfeng took out his stopwatch, pressed the switch, and said, "Five minutes and fifteen seconds, start counting down."

Li Xiaoming struggled a few more times, and when he saw that he was much calmer, Mu Haoyang let him go.

"Old Yang, go to the reactor compartment and make the reactor reach 115% of the output power as soon as possible." Zhou Yusheng took off his gas and said to Yang Yuanfan who was about to leave, "Don't worry too much, remember to report the situation."

Yang Yuanfan nodded and trotted away from the command cabin.

"Sonar Chief, report on the situation?"

"The torpedo did not turn..." Meng Guangyang was suddenly shocked and said, "The high-frequency slap sound, the torpedo has entered the self-guided attack stage and has begun to turn... Captain, the torpedo has followed."

"Don't panic." Zhou Yusheng turned his gaze to Lu Chengfeng.

"Recalculate the impact time... there are four minutes and twenty seconds left."

Mu Haoyang was a little confused. At first, it was five minutes and fifteen seconds, but it turned into four minutes and twenty seconds. But Yang Yuanfan went to the reactor cabin, and everyone else was very busy, and no one could explain his questions.

The sudden shortening of the torpedo impact time is not complicated.

When the North Carolina launched the torpedo, the distance was too close and chose the self-guided attack mode. Because the torpedo does not have the ability to distinguish between enemies and us, it will conduct indiscriminate attacks on nearby targets, so the torpedo will only turn on the last safety and activate the active seeker after a distance from the submarine.

After entering the self-guided attack stage, the torpedo will first search the waters ahead.

Because the submarine was not fast and was very close, the torpedo quickly discovered the Shark and locked the Shark.

If it is a more honest torpedo, it will chase the strait of the Shark.

The mk48-7 torpedo is not old and can even be regarded as the most advanced heavy torpedo in the world. After discovering the target, in addition to tail-chasing attacks, other more efficient attack methods can be selected according to the situation. For example, when the angle between the torpedo and the submarine is relatively large, the torpedo will cut from the inside of the submarine route to shorten the attack distance. At the same time, by deflecting the active seeker in the fairing, continue to lock the submarine, and adjust the course and speed at any time according to the changes in the submarine's route to ensure that the submarine is sunk at the fastest speed.

At this time, this is the case that the Shark encountered.

The two mk48-7 torpedoes did not catch up from behind, but attacked from the left side of the Shark, so the impact time was shortened by nearly one minute.

I probably thought this was probably the last few minutes of my life, but the officers and soldiers in the command cabin were relieved.

"If we die here, will you blame me?" Zhou Yusheng suddenly asked.

Li Xiaoming was stunned for a moment and found Zhou Yusheng asking him. He smiled and said, "There is nothing to be surprised about. It is already amazing that you can take us to this day."

"It's a pity that we couldn't pull a few people on the back."

"There are no Americans in the underworld, but they are quieter. I don't expect to come to the King of Hell, and I have to fight openly and secretly with the Americans."

"The King of Hell's Mansion does not accept Americans."

After saying that, Zhou Yusheng laughed, and Li Xiaoming laughed loudly.

At this time, Yang Yuanfan's voice came from the speaker of the telephone in the boat. "Captain... Lao Zhou..."

"Say!" Zhou Yusheng pressed the hands-free switch and his answer was concise and clear.

"The reactor has reached a maximum output power of 115%. Do I need to start immediately?"

Zhou Yusheng's brows jumped a few times and looked at Lu Chengfeng.

"Two minutes and forty-five seconds."

Zhou Yu grew up and said to the microphone: "Start immediately. How long does it take to reach the maximum speed?"

"One and a half, maybe one and forty-five seconds."

"Okay, come here after you're done." Turn off the phone and Zhou Yusheng looked at Lu Chengfeng again.

“The impact time is being recalculated.”

Zhou Yusheng nodded and said nothing more.
Chapter completed!