Du Xinghua can only guess what happened.

It was not until the end of the war that Du Xinghua learned that when the "Tigerpent" avoided torpedo attacks, the "Tigerpent" that accompanied the operation did not leave and was moving nearby. At that time, in addition to the anti-submarine patrol aircraft that attacked the "Tigerpent", there were two anti-submarine destroyers who rushed over. In order to cover the "Tigerpent", the "Tigerpent" ventured to attack the Japanese Navy anti-submarine destroyers and sank 2~ Japanese warships with torpedoes. However, the "Tigerpent" was not as lucky as the "Tigerpent". When attacking the Japanese warships, the second batch of Japanese anti-submarine patrol aircraft arrived and found that they used 3 aviation anti-submarine torpedoes to sank the "Tigerpent".

Because the "Tiger-Ship Pig" has not returned to the base, the Republic Navy could only include the "Tiger-Ship Pig" on the list of "missing submarines" and could not know what happened before the "Tiger-Ship Pig" disappeared. After the war, based on the Japanese naval combat records obtained, we found out what happened at that time. For this reason, Du Xinghua adopted three orphans of the "Tiger-Ship Pig" officers and soldiers after the war, and provided living expenses for the children of other officers and soldiers every year. Because the Republic Navy adopted a new pension system after the war, Du Xinghua did not need to provide tuition for the children of the children of the sacrificed comrades.

There must be casualties in the war.

The deeds of the "Tiger-Whispering" who risked his life to protect his friend's boats were included in the naval textbooks and became a role model for every generation of naval soldiers in the Republic. Because it was the first electric submarine to be sunk by the enemy in the war, the "Tiger-Whispering" was also written into the naval history of the Republic.

In any case, the officers and soldiers of the "Tiger Dolphin" proved the Republicans' fighting will to be ready to die with their homes through their actions.

When the "Adopterus" left the battle waters, it was in the southern waters of the Izu Islands thousands of kilometers away, but the "Arc Porpoise" commanded by Liu Haifeng was quietly approaching the target.

With Du Xinghuayi and Liu Haifeng also received the "A" combat order at around 3:30 am.

Before taking out the combat documents, Liu Hai ordered the "Jiang Porpoise" to increase the speed to 6 knots and approaching the strategic nuclear submarine of the "Flying Dragon" in front.

Who knows that the combat order of the "A" number is the highest level of strategic order.

Come to attack submarines. This command means you need to risk sinking enemy strategic nuclear submarines.

As the latest strategic nuclear craft of the Japanese Navy, the "Flying Dragon" is not only the most advanced submarine of the Japanese Navy, but also has excellent silent performance. Compared with the "Canglong", the "Flying Dragon" makes less than 1 Bei during quiet navigation. The lowest is 96 Decibels.

This means that the "River Porpoise" uses drag-and-drop passive sonar. It can only track the "Flying Dragon" from 50 kilometers away. If the spherical sonar is allowed to work passively, the tracking distance will be shortened to 25 kilometers.

At the end of September, when the Navy issued its combat mission, Liu Haifeng and Du Xinghua both competed to deal with the "Flying Dragon".

According to the unwritten rules of the submarine force, the two captains decided who would deal with the "Flying Dragon" by drawing lots. Liu Haifeng's luck was better than Du Xinghua. He caught the "Shangshang" and was arrested.

On October 1, the "Flying Dragon" was discovered in the waters of the Izu Islands.

Submarine combat has unwritten "understudy rules". At any time, strategic nuclear submarines will be protected the most strictly, with attack submarines underwater, anti-submarine warships on the surface, and anti-submarine patrol aircraft in the air. The US Navy is like this. The difference is that Japan does not build attack nuclear submarines. It is not that Japan does not have the ability to build attack nuclear submarines, but that Japan cannot temporarily build attack nuclear submarines with electric submarines with performance that are comparable to the Republic and the US attack nuclear submarines. In the case where performance determines life and death, if it is impossible to build advanced attack nuclear submarines, it is better to build more AIP conventional submarines with the same funds.

It was the AIP conventional submarine that covered the "Flying Dragon" underwater.

Because the maximum submarine speed of conventional submarines cannot keep up with nuclear submarines, the Japanese Navy set out a fixed patrol area for strategic nuclear submarines. The "Canglong" patrolling the eastern waters of Okinawa Island is responsible for threatening the submarine-launched cruise missiles carried along the eastern coast of the Republic to attack Shanghai, Hangzhou, Suzhou, Nanjing, Wenzhou and other places. The "Flyinglong" patrolling the southern waters of the Izu Islands targeted large cities in the northeastern region of the Republic and could use the cruise missiles it carried to attack Dalian, Chenyang, Changchun and other places.

The Japanese Navy did not send conventional submarines to cover the "Aolong", but sent conventional submarines to cover the "Flying Dragon", which shows the degree of importance the Japanese Navy attaches to the "Flying Dragon". In the words of Japanese Military Minister Nobus Sato Nobusai, as long as the "Flying Dragon" is still sailing at sea, it can destroy 12 large cities with a population of more than 5 million in China, China dare not rashly launch a war against Japan!

The Japanese military chief made a harsh statement, and the Republic's Navy would definitely not give up.

Perhaps the Japanese Navy also knew that Kazuo listed the "Flying Dragon" as its primary target, so when the "Flying Dragon" went out to sea to carry out combat readiness patrol missions, it was deployed at least AIP conventional submarines under the sea.

Six anti-submarine warships were deployed in nearby waters and submarine patrol aircraft were deployed at local bases, and they took turns to the patrol waters of the "Flying Dragon" to carry out anti-submarine patrol missions.

The devil is one step higher than the other, and the Tao is one step higher.

No matter how tight the defense deployment of the Japanese Navy is, it is impossible to ensure that there is no accident.

As early as early as the beginning of 2c26, the Republic's Navy mastered the characteristic noise of the "Flying Dragon". At the end of 2026, when the Japanese Navy held a joint anti-submarine exercise with the main purpose of protecting strategic nuclear submarines, the "Jiang Porpoise" commanded by Liu Haifeng and the "Assinus" commanded by Du Xinghua broke through the Japanese Navy's anti-submarine network without any idea, discovered the "Flying Dragon" that was heavily protected, and carried out a simulated attack within 20 kilometers.

According to this operation, the Navy adjusted the deployment method of submarines and reduced the number of attack submarines tracking and surveillance of Japan's strategic nuclear submarines to 2, while during the Peninsula War, this number was 3.

Before the outbreak of the war, all attack submarines carrying out "strategic anti-submarine" missions completed combat readiness patrol missions.

In Liu Haifeng's view, using two attack boats to deal with one strategic nuclear submarine is a waste of the precious forces of the Republic's naval submarine force, in addition to giving psychological comfort to the Republic's senior management.

The performance of Japan's strategic nuclear boats is only ordinary. Because the "self-circulating pressurized water reactor" it uses is the first generation product, the maximum speed will not exceed 6 knots without starting the secondary circulation pump. When the "Flying Dragon" performs combat readiness patrol missions, it often controls the navigation speed below. Only in this way can its noise be reduced to about 96 berms. Even so, the "Jiang Porpoise" can still easily discover and track the "Flying Dragon". In the three tasks of tracking the "Flying Dragon" performed by Liu Haifeng, the "Flying Dragon" never allowed the "Flying Dragon" to leave the attack range of the "Jiang Porpoise".

After receiving the combat order, Liu Hai chose a completely opposite tactic to Du Xinghua.

The "Jiang" did not launch torpedoes at the "Flying Dragon" 20 kilometers away, but shortened the distance at a speed of 15 times the Flying Dragon. It was mentioned in the combat mission that the "Jiang Porpoise" must sink the "Flying Dragon" within 12 hours after receiving the order. In Liu Haifeng's view, 12 hours are very sufficient, and there is no need to race against time.

Using the speed of 2 knots; the "Flying Dragon" that followed the "Flying Dragon" took about an hour to shorten the distance to less than 3 nautical miles. At this distance, let alone the heavy electric anti-submarine torpedo, even the oldest anti-submarine torpedo can sink the "Flying Dragon" with a certainty.

In other words, it was not until 7:30 that Liu Haifeng allowed the "Powder" to enter the attack position.

When choosing the attack method, Liu Haifeng had to keep a hand. The three anti-submarine torpedoes launched by the "Jiang Porpoise" first attacked with two-speed self-guided methods. Two torpedoes shot at the "Flying Dragon" and one torpedo shot at the Japanese AIP conventional submarine about 1c kilometers away from the "Flying Dragon" and about 4 kilometers away from the "Jiang Porpoise". Even if only two torpedoes were used to attack the "Flying Dragon", Liu Haifeng was confident enough. Before launching the torpedo, Liu Haifeng also asked his partner Zhang Xuefeng to control the fire control system and input the parameters of the other three Japanese AIP conventional submarines for the other three torpedoes. Although the distance was a little farther, Liu Haifeng did not want to ruin the "Jiang Porpoise" for several Japanese conventional submarines in the sea where Japanese anti-submarine patrol aircraft and anti-submarine warships were gathered. However, as long as the Japanese submarine acted rashly, the "Jiang Porpoise" could launch the attack at the fastest speed.

Without any doubt, Liu Haifeng is a cruel and ruthless character.

The actual situation was much better than Liu Haifeng expected. When the "Flying Dragon" discovered the approaching torpedo, it had no time to maneuver and avoid it at all, and it was even more impossible to float to the depth of the periscope, launching 12 large hypersonic submarine-launched cruise missiles weighing 15~1 stored in the vertical launch tube. After several anti-torpedo baits were continuously thrown, the "Flying Dragon" was continuously hit by two heavy torpedoes without any resistance. Before sinking to the seabed deep into Dami, the "Flying Dragon" with an underwater displacement of up to 1,500c~ or more tons broke into three parts. 127 officers and soldiers set foot on the Huangquan Road along with 12 hypersonic cruise missiles symbolizing the highest strategic strike capability of the Yamato nation.

Subsequently, the conventional Japanese submarine that covered the "Flying Dragon" was also sunk by heavy torpedoes.

When the Japanese anti-submarine patrol aircraft arrived, the first thing they searched was not the sea area where the "Jiang Porpoise" was located, but the sea area between the "Flying Dragon" and the conventional submarine. Perhaps the captain of the Japanese anti-submarine patrol aircraft believed that the Republic submarine that ambushed the "Flying Dragon" was ambushed between the "Flying Dragon" and the conventional submarine.

Taking advantage of this opportunity, the "River Porpoise" quickly turned and left.

After leaving the search range of Japan's anti-submarine patrol aircraft, the "River Porpoise" increased its navigation speed to 37 knots in order to leave the dangerous seas as soon as possible and avoid being attacked.
Chapter completed!