The Great Wall Boat's 8 knots speed is the maximum underwater speed that can be achieved while ensuring sufficient concealment. The boat belongs to the 041 model and is the most advanced model in the Yuan-class (external ship-class code) series, and has only been in service for three years.
Because it uses an AIP power system, it can sail underwater for a long time.
When traditional conventional power submarines are sailing underwater, they are powered by the battery power, so they need to float up and enable internal combustion engines such as diesel engines to charge the battery. This method seriously affects the advantages of the submarine's strong concealment.
The emergence of AIP is to solve this problem. It does not rely on air propulsion devices, and does not require upward charging or upward to obtain air to allow the submarine to sail underwater for a long time. The speed of 8 knots is also ensured by the Great Wall Boat.
The maximum speed that can be achieved when the battery pack is filled.
If the battery power is not considered, the Great Wall Boat can reach a maximum speed of 20 knots underwater.
The mysterious "partner" was also sailing towards the same course at the same speed, in parallel with the Great Wall Boat, only 8 nautical miles away. The noise level of the Great Wall Boat is very powerful, and Tu America and Japan are sure that the other party did not notice him
, but three hours ago, the other party conducted a communication, so Tu Meiji learned that there was such a submarine around him that was no worse than his own.
What is certain is that if the Great Wall Boat actively communicates with the shore, its whereabouts will definitely be exposed. Therefore, after receiving the order from the front, Tu Meiji had already made up his mind not to respond to any communication.
But now what is in front of him is a very difficult multiple-choice question.
The atmosphere in the combat command center under the submarine hull is solemn, and there is almost no sound heard. The shoes of the submarine soldiers are even specially made and will not make any sound when walking. What are the pipelines and lines of most facilities, equipment, and pipelines in the boat?
There is no regular coverage, which is to avoid internal sound resonance and to facilitate emergency repair. Therefore, the inside of the submarine looks messy and not as neat as the inside of the surface ship.
The sonar room kept track of the unknown submarine, and the torpedo department was in combat and could launch an attack at any time. Undoubtedly, the Great Wall Boat was in an advantageous position.
But the United States and Japan need to make a decision as soon as possible.
"The purpose of the Justice Operation in the West Pacific is to capture Tojo Yiji, the important leader of the Western Pacific Pirates. This man is the military advisor of the Western Pacific Pirates. Catching him is equivalent to destroying the brain of the Western Pacific Pirates. The superiors are determined to win."
Tu Meiji leaned over and looked at the navigation map and said in a deep voice, "The front-line command requires us to provide support and cover for the arresting operation troops at any time. The arresting operation troops arrived at the Overlord Islands at 20:30 and planned to end the mission at 23:30.
It is 19:45 now, and the front-line command asked us to ensure the smooth evacuation of the arrested troops and maintain the current speed. We cannot reach the established waters before this."
8 knots equals 8 nautical miles. Although the previous indicator knows the special nature of the submarine, it is impossible to arrive before the arresting operation troops ends their mission at any rate. There is no question of covering the evacuation, let alone
Support is provided.
The Great Wall Boat's class submarine can launch submarine missiles through torpedo tubes, which can attack surface and land targets, but the Great Wall Boat commanded by Tuo U.S. and Japan only carries 20 533mm caliber torpedoes. Therefore, Tuo U.S. and Japan analyzes
The purpose of the foreword is to allow the Great Wall Boat to intercept the enemy's surface and underwater targets, support the arrest of the operational forces or cover their evacuation.
Huang Jinhua looked at the hand-drawn situation chart and was silent. The unknown submarine was 8 nautical miles on the starboard side, and its course was consistent with the same boat. It was not difficult to judge the purpose of the unknown submarine. He had clear suggestions in his heart, but he had not yet
Think about whether to formally propose it.
Deputy Captain Xie Huarong has limited experience. Under such circumstances, he basically dared not make suggestions for combat. He is still in the learning stage.
But Tu Meiji wanted to test him and asked, "Xie Huarong, tell me what you think, what should I do if I boat?"
Xie Huarong said in contemplation, "I think the commands mentioned before should be executed and the speed should be increased immediately and the designated sea area should be rushed to the designated sea area within the specified time."
"Where is the unknown submarine on the starboard side?" Tu Meiji asked.
Xie Huarong said, "No matter they are, they will not attack our boat on their own initiative."
Tu Meiji and Huang Jinhua looked at each other and smiled slightly. Tu Meiji said, "Old Huang, do you have any other suggestions?"
Huang Jinhua smiled and said, "My tendency should be consistent with your captain."
Tu Meiji nodded slightly and said, "I'll go and discuss with the political commissar."
He turned around and walked towards the residence cabin. He and the political commissar took turns on duty, ensuring that there was a commander who could lead the family in the command cabin at any time.
Xie Huarong looked at Tu Meiji's back and asked Huang Jinhua in a low voice, "Squad Leader Jinhua, what does captain mean? Isn't he going to do it?"
"Of course we won't fire the first shot, but if it is confirmed that the unknown submarine is from the Western Pacific pirates, then we have sufficient reason to fire the enemy first." Huang Jinhua said seriously, then turned around and went to the sonar room.
.
Director Sonar was alert to the surrounding situation with three sonars, and tracking the unknown submarine on the starboard side was the main task. At this time, Director Sonar was busy identifying the characteristics of the unknown submarine to do so.
Judgment boat type.
Because the other party did not find the Great Wall Boat, the Great Wall Boat obviously did not use active sonar, but instead enabled passive sonar to track the noise emitted by the target. However, if an attack is to be carried out, it is necessary to use active sonar. Usually,
Also known as attack sonar.
Sonar can be regarded as a radar in water, but it is not a radio signal but a sound wave. The sound waves hit the target and are reflected back and are accepted by the signal reception and processing device. This process completes the detection in water.
The working methods are divided into active and passive, and you can also refer to the working methods of the radar. Active radar will emit signals and naturally have no way to escape. Passive radar only accepts no emission and is very concealed. Sonar is the same, but passive sonar
The detection distance is limited and is closely related to the target noise level.
This is also because it is only 8 nautical miles away. No matter how far it is, the Great Wall Boat will probably not be able to use passive sonar to track it.
The sonar system of the Great Wall Boat is very complete, with a ship's side array sonar, a bow sonar, and a towed line array sonar, with multiple functions and various working methods.
The sonar room made great contributions when discovering unknown submarines. The signal was very weak and hidden in the clutter under the sea, it would be ignored if it was a little negligent. Many people even mistakenly thought it was a large fish even if they heard it.
Class or something.
The person on duty was Li Xinnian, the first-class sergeant who was sitting in the middle at this moment. He keenly discovered the suspicious signal from a large number of clutters, and immediately took measures to amplify and listen, but he suddenly found that
It's actually the sound of a propeller!
At that time, this discovery scared Tu Meiji and Japan into a cold sweat.
Li Xinnian quickly confirmed that it was a submarine rather than a surface ship, but he had not yet judged the model of the submarine. It is certain that it was not a submarine on his side. Every submarine that went out to sea would receive the command on the shore from time to time.
Ministry of Information and Information, including the seas of activities of friendly forces.
There is only one boat like Tu and Japan in the sea area here.
"Old Li, have you met the number?" Huang Jinhua asked Li Xinnian in a low voice.
Li Xinnian shook her head slightly, "I have compared it three times, but no model that matches the noise characteristics is found."
"I just thought of a boat that is not in the directory. Let's make a judgment." Huang Jinhua took the pen in Li Xinnian's hand and wrote two words.
Canglong.
Li Xinnian was stunned, then shook her head, "No way to confirm without the information on this boat."
"If the other ones don't match, then you can be sure that it is Canglong." Huang Jinhua said with a smile.
Li Xinnian was about to say that this was nonsense, but suddenly she found that Huang Jinhua's smile was a little meaningful. She was stunned for a moment, then raised her eyebrows and nodded slightly and said, "Well, a good way, now it's basically certain that it is.
The latest Canglong submarine purchased by the Western Pacific Pirates.”
"For caution, you can verify it again." Huang Jinhua said.
"I want it." Li Xinnian quickly verified it and confirmed that it was not any submarine in the catalog. He wrote the conclusion that it was "suspected to be the latest purchase of the Canglong, the Pirates in the West Pacific."
This is what Huang Jinhua wants, and he quickly returned to the command cabin with his hands. Tu Meiji was already there, and it was obvious that his discussion with the political commissar had a result.
Li Xinnian and Huang Jinhua's judgment was very correct. The unknown submarine was the newly purchased Canglong conventional submarine by the Pirates of the West Pacific. It is the most advanced boat among the Pirates of the West Pacific. It has an underwater displacement of 4,200 tons, which is more than
The Great Wall Boat is a little bigger and smaller.
"Old Huang, what's the situation?" Tu Meiji asked hurriedly.
Huang Jinhua handed over the report in his hand, "There is a result, which is consistent with our guess. This Canglong poses a great threat to our fleet, and I suggest taking decisive measures."
"Combined with its course judgment, we must support their main fleet, and decisive action to destroy it is in line with our combat principles." Tu Meiji said.
Xie Huarong understood and said, "I agree that taking decisive measures while we are in an advantageous position is the best choice. After solving this threat, we can concentrate on carrying out the tasks of the front finger, and even actively contact the front finger to communicate fully.
Operational plan.”
Tu Meiji glanced at him and said, "Since the opinions are unified, then do this."
His face suddenly solidified and he said in a deep voice, "Fight alarm!"
"Fight-fight alarm!"
"Fight-fight alarm!!"
"Fight-fight alarm!!!"
The entire boat moved quickly, and the torpedo compartment in standby state was ready for launch.
Tuo of the United States and Japan ordered: "Slow down for five festivals!"
"Slow down for five quarters!" Huang Jinhua repeated the password.
Tu Meiji continued to order: "Turn right thirty degrees!"
"Turn right thirty degrees!"
The Great Wall Boat slowed down, and the bow slowly turned to the right, pointing to the route of the Canglong. The Canglong still had no sense of consciousness. Objectively speaking, the noise level of this boat is relatively powerful, better than the Great Wall Boat.
Other aspects are also world-class advanced level, with comprehensive performance above Great Wall Boats.
The problem is that the quality of the personnel who operate this boat is not satisfactory, the technical level is not bad, but the awareness is not strong. Otherwise, with the noise level of the Canglong, it is more difficult for the Great Wall Boat to discover it. The United States and Japan are very experienced and join the army.
I have been running many places since then, and the string is always tight and even hidden, which is the life of the submarine. Therefore, I have a very strong awareness in this regard.
Huang Jinhua looked at the estimated route displayed on the tactical display. When the route intersected with the target boat's route, he reported, "Captain, turn is completed."
Two submarines 8 nautical miles apart were sailing in parallel. The Great Wall Boat slowed down and turned right at the same time to thirty degrees. The Canglong continued to sail forward at a speed of 8 knots without any sense, so it entered the attack range of the Great Wall Boat.
Tu Meiji looked at his watch and quickly calculated the distance and time.
The command cabin was so quiet that only the breathing that everyone was controlled could be heard, and several staff officers were focused on Tu Meiri.
Tu Meiji made up his mind and said, "Thunder No. 1, No. 2 is ready!"
The torpedo compartment acted quickly, and the fire control post of the command module locked the target, and reported: "Target locked!"
"The torpedo compartment received the index!" report from the torpedo compartment.
Tu Meiji gritted his teeth and said, "Open the launch tube!"
Huang Jinhua pressed the button hard, and the covers of the No. 1 and No. 2 pipes were opened.
At this time, the Canglong had already noticed an abnormality, first of all, the sound of the attacking sonar hitting the boat, and then the sound of the torpedo tube lid of the Great Wall Boat. Any qualified sonar can capture these two unique
Sound, and quickly determine that this is an aggressive behavior.
However, they no longer have a chance.
Tu Meiji roared and issued an order: "Two shots in a row! No. 3 and No. 4 thunder are ready!"
"Two shots in a row! No. 3 and No. 4 are ready!" Huang Jinhua repeated the command loudly.
Two 533mm caliber fish-5 heavy anti-submarine torpedo were pushed out of the launch tube, and the engine ignition pushed the torpedo toward the target, and the speed quickly accelerated to 65 knots. By this time, even if the Canglong could fly, it would not be able to escape.
Chased.
The Yu-6 heavy anti-submarine torpedo has advanced performance and has become the main anti-submarine torpedo of the People's Navy since it was put into service in 2005, equipped among surface ships and submarines. This torpedo is the first time our army has adopted modular design and open software.
Architecturally designed torpedo.
The highlight of this type of torpedo is that it uses is very advanced in the guidance system, and the guidance system can be flexibly selected according to needs, and can adopt various guidance methods such as line guide, active sonar guidance, and stern flow guidance.
Among them, the stern flow guidance method is relatively advanced. When measuring and passing through the ship's wake, the direction will be rotated in a certain angle in multiple directions, allowing the torpedo to face the ship. This method of searching can make the torpedo chase left and right like a snake.
Ship.
(The stern flow guidance method is wake self-guiding)
In order to ensure that everything is foolproof, Tu Meiji and Japan immediately prepared the second batch of two torpedoes. The second batch of two torpedoes was in a line-guided guidance mode, which can guide the torpedoes to attack by sending instructions.
Although a fish-6 heavy anti-submarine torpedo can send more than 4,000 tons of Canglong to the seabed.