The [***] man of the MZD era is the greatest. The MZD ideology, mainly the MZD ideology, has injected them with an iron-blooded military soul that overwhelms all enemies and will never be subjugated by the enemy, and they use their blood and loyalty to the motherland and the spirit of fearless sacrifice to cast a steel backbone for the Chinese nation. It is the main source of power for the rise of New China. The science and technology, which is the primary productive force, brought by the "base people" have endowed them with more powerful strength. The country's scientific research and development personnel and the vast number of workers and engineers on the military-industrial front have also made indelible contributions to ensuring that the "loveliest people" of this era shed little or no blood on the battlefield.

While the carrier-based aircraft on the MZD aircraft carrier were making a strong sortie in the air, a life-and-death struggle between the submarine forces of the two nuclear-powered aircraft carrier fleets of China and the United States was quietly unfolding under the deep seabed.

The vast oceans cover 71% of the Earth's area. It provides a very broad stage for these secret submarines that sneak in the depths of the ocean, known as "underwater ghosts" and haunting submarines.

The USS SSN588 "Villain" and USS SSN590 "Big Shark", which carry out underwater anti-submarine missions for the USS Enterprise's all-nuclear-powered aircraft carrier fleet, are two second-generation US "Bonito"-class attack nuclear submarines. They have high power, high speed, strong endurance and good concealment. They quietly cruised in front of the US "Enterprise" aircraft carrier fleet's passage and in the sea areas where carrier-based planes and surface warships had not yet arrived, carrying out search and vigilance missions underwater, and protecting the underwater safety of the "Enterprise" aircraft carrier fleet.

In the command room of the SSN588 "Villain" attack nuclear submarine, the deputy captain of the boat, Major Finaculin, carefully recorded the current position of the "Villain" on the chart, and reported loudly to the captain Lieutenant Commander Ivida from time to time.

Lieutenant Commander Ivida was also looking at the charts, using red and blue pencils, to mark the route of his submarine and the area to be searched, and then handed the charts with red, red, green lines and arrows to the deputy captain, Major Finecklin, who carried out his orders.

The basin on the western edge of the Pacific Ocean is about to be. The shape of the edge basin here is different, the structure of the ditch basin is changeable, between the dense sea hills, the undercurrent is chaotic, the seabed situation is complicated, it is very suitable for the submarine to lurk, we should pay special attention to the search, to see if there are any suspicious targets. Lieutenant Colonel Ivida measured the chart with a ruler, drew a solid line on it with a red pen, then raised his head, took a sip of coffee in his cup, and sat in the captain's seat and commanded loudly: "Turn right rudder, channel 230, depth 150 meters, speed 18 knots." ”

"Right rudder, channel 230, depth 150 meters, speed 18 knots." Major Finaklin repeated aloud the orders of Captain Ivida.

"Turn the rudder right, course 230, depth 150 meters, speed 18 knots" One of the crew members in front of the submarine resubmitted the order and reported loudly "Turn ready, 10 seconds later began to turn, 10, 9, 83, 2, 1, turn!

Lieutenant Colonel Ivida instructed Finaklin, "Major, inform SSN590 of our movements and directions."

"Yes, it must be." Finaklin picked up the walkie-talkie and replied.

In order to achieve the purpose of concealment, submarines spend most of their time in deep water, and it is very complicated and difficult for submarines to communicate with the outside world, and they need very complicated information system engineering. In the underwater world, in order to realize the connection between your own submarines. An underwater communication sonar was invented.

Sound travels at a speed of 340 meters per second in the air and up to 1,435 meters per second in water. Underwater communication sonar can emit sound wave signals of different lengths to the water, form sound wave codes, and use sound waves to convert each other to achieve the purpose of communicating with each other. Its mission is to ensure the cluster activities of submarines or to cooperate with the communication needs of other forces; This method is also used when a surface or underwater submarine is accidentally discovered underwater, using friend or foe identification sonar, using the way of matching passwords to judge friend and foe, this kind of sonar sends a special signal to ask the other party, if the other party is its own submarine, it will answer a signal, if not, it will not receive the signal, even if it is received, it will not be able to reply correctly. It's a lot like a sentry in the night, when he finds someone, he first asks for the person's password. In the water, this underwater communication method is used to communicate with each other and judge friend and foe. The use of underwater communication sonar is strictly controlled, as it is easy to be intercepted by the enemy or reveal the position of their own submarines.

After receiving a "report on the enemy's situation" from the fleet, the two conventionally powered submarines of the "Dolphin" class NH201 and NH202 of the "MZD" aircraft carrier fleet immediately changed from a periscope state to a deep diving state. As the main force of the antisubmarine warfare of the MZD aircraft carrier fleet, they made use of the mobile and concealed surnames of their submarines to make a breakthrough deployment on the periphery of the defense circle of the MZD aircraft carrier more than 1,000 kilometers away from the eastern end of the Miyako Strait, and according to the fleet's arrangement, to conduct anti-submarine alert and anti-submarine searches.

Zhao Hailong, the captain of the NH201 submarine, sat in a swivel chair in front of the display and control console of the "Dolphin" submarine and inserted a CD-ROM of navigation charts in this sea area into the computer. After Zhao Wenlong quickly entered a command on the keyboard, several navigation directions were displayed on the screen for his reference.

Innovation is the magic weapon to seize the commanding heights. After China's submarines are equipped with intelligent navigation management systems, submarines have realized paperless navigation charts, saving a lot of manpower and freeing up considerable submarine space for submarines. In the past, when submarines sailed, especially when they were on long voyages, the nautical charts they carried occupied a considerable amount of submarine space, and now these nautical charts are kept on several CD-ROMs. A single disc rack can hold the world's nautical charts.

This is also a major scientific research project of the Department of Computer Science of "Blue Sky University of Science and Technology", the Institute of Computer Science of the Chinese Academy of Sciences, and the China Ocean Surveying and Mapping Bureau. The "Al Qaeda people" who came to later generations were well aware of the importance of digital charts. Very early, under the leadership of Li Wenbin, a programming engineer at the base, and 10 young scientific and technological personnel from the Department of Computer Science of Lantian University of Science and Technology, they formed a "nautical chart group" and began the application research of digital nautical charts. With tens of thousands of programs entered into their computers from their fingertips, China's digital charts became a reality step by step. In 1960, China's first batch of digital charts was successfully developed. In just two years after that, the "nautical chart group" has successively broken through six core technical problems such as seamless splicing of nautical charts of different scales, and has achieved original results in this era.

Digital nautical charts are another revolution in the history of modern navigation, after radar navigation and satellite communications. With a click of the mouse, you can see the vast sea. When the ship is sailing, the digital chart can automatically select the route according to the combat intent; When hazards occur on the waterway, the digital charts provide audible warnings and display hazard graphics; In the case of long-range weapon attacks, digital charts can provide the actual distance and location of a ship to any target point at sea at any time.

With the help of digital charts, people can intuitively monitor the formation and development process of major marine disasters, and scientifically forecast and prevent marine disasters.

The NH201 submarine was suspended between the undulating hills after completing the search mission in its own defense area. Silence is the best weapon of submarines, they turn off the engines to minimize their noise, and completely hide themselves from the background noise of the complex ocean. At the same time, you can maximize your monitoring ability. They lurk quietly among the hills of the sea, waiting for the arrival of the enemy.

"It is reported that the passive low-frequency search sonar base array on the side received a suspicious underwater communication sonar signal." Lieutenant Colonel Zhao Wenlong's headset came the report of the NH201 submarine sonar soldier: "According to the same signal received by the towed sonar from three different positions on the side of the gunwale, the direction of the signal source is determined by computer processing, and the distance is 25,500 meters, the depth is 150 meters, and the speed of movement is 18 knots. ”

The slightest carelessness in modern warfare can put oneself to death, and this call between the "Evil Man" and the "Big Shark" with specific sound waves did not escape the sensitive ears of the Chinese "dolphins," who exposed their whereabouts. Hydroacoustic countermeasures are electronic countermeasures carried out by the opposing sides using underwater acoustic equipment under the water of a black hole. It is of great importance for anti-submarine warfare. It was gradually formed with the development of hydroacoustic equipment, submarine warfare and anti-submarine warfare. The central content of underwater acoustic countermeasures is detection and counter-detection, jamming and counter-jamming, destruction and counter-destruction.

That is to say, it is necessary to use underwater acoustic countermeasure equipment to ensure that its own underwater acoustic equipment is not interfered with, that is, to be able to work normally when it is interfered with, to maintain the normal detection of its own underwater acoustic equipment, and to complete underwater detection and weapon guidance, so as to effectively attack and destroy the opponent's submarines, and to interfere with the opponent's underwater acoustic equipment, so that its underwater acoustic detection will be blind and the acoustic guided weapons will be out of control.

Zhao Hailong ordered the sonar officer while looking at the various detection data displayed on the screen on the display and control console of the NH201 submarine: "Continue to monitor."

The "Dolphin" submarine is equipped with a multi-functional combat command system, which once again shows its powerful functions, consisting of marine environmental sensors and an electronic command and control system, and then integrates the radar system, fire control system, and automatic identification of friend or foe equipped with the submarine, and quickly calculates the launch parameters according to the target data that has been understood, and then provides automatic launch control, and recommends tactical movements and weapon delivery methods.

Zhao Wenlong kept switching to look at the data and images of the multi-function display in front of him, and then he adjusted the angle of the microphone on the display console and said, "Attention departments, prepare for battle." Right rudder, 45 degrees, speed 5 knots, depth 240 meters. torpedo preparation".

Lieutenant Colonel Ivida, captain of the USS Villainous nuclear submarine, stood up and poured himself a cup of richly flavored Starbucks coffee. He returned to his seat, put his feet on the small table in front of him, and took a beautiful sip of fragrant coffee, enjoying his supremacy here. He is very satisfied with the 76.7-meter-long, 9.6-meter-wide, 3,513-ton underwater displacement, 220-meter maximum diving depth, 2,900 tons of water displacement, 3,513 tons of underwater displacement, 1 S5W nuclear reactor and 2 steam turbine power plants, and a maximum power of 15,000 horsepower.

The "Evil Man" is a nuclear-powered attack submarine, the bow is like a warhead, and the hull gradually expands from the bow to the maximum width on both sides of the sail cover, and then shrinks inward to the stern The entire submarine is a teardrop-shaped shell, and the tail is equipped with a cross-shaped tail rudder, combined with the new nuclear power propulsion system, which greatly increases the underwater speed of the submarine, so that the maximum speed on the water is 15 knots, and the maximum underwater speed is 30 knots. In addition, the "bonito" class attack nuclear submarines are equipped with 37 torpedo tubes capable of firing MK6 torpedoes; At the same time, it is also equipped with SQS-4 active sonar and BQR-2B passive sonar sonar, which are arranged above and below the torpedo tubes, respectively; Mkll2 torpedo fire control system; 2 liftable periscopes, located side by side in the enclosure of the command platform; 1 SS-2 radar lifting mast, located behind the periscope; There is also an electronic countermeasure lifting device, located behind the radar lifting mast, these advanced electronic equipment make this "villain" invincible under the sea.

Lieutenant Colonel Ivida was also very satisfied with his well-trained seven officers and 84 sailors, and he took off the cabin telephone hanging from the reinforced support of the command module and dialed the sonar room.

"Sergeant Ratford, I'm Captain Iveda, please report on the situation. Is there something suspicious? ”

Sergeant Ritaford, a black boy who graduated from the U.S. Navy Academy in Annapolis, pressed the headset with his right hand and replied, "Sir, everything is normal, nothing unusual has been found. ”

"Very well, keep listening, and if you find anything out of the ordinary, you must report it to the command module immediately."

“yes,sir！” (Yes, sir.) ）”

Lieutenant Commander Ivida yawned and said to the deputy captain, Major Finaculin, "Come on, there's nothing to do now, I'm going to sleep for a while" Lieutenant Commander Ivida handed over the submarine "Villain" to his deputy, Finaculin. He walked out of the command room himself.

Major Finaklin looked at the back of Lieutenant Colonel Ivida leaving, and couldn't wait to sit in the captain's seat, and thought very proudly that it wouldn't be long before he might really become the master of this seat and the boss of the "evil man".

This "evil guy" in the United States did not smell the thick murderous aura that permeated the gloomy waters around him.

(To be continued)