Thunder Strikes Back

Chapter 92 Suspicion
"De jure, they cannot attack us on the high seas."

"Hehe, don't worry about this, political commissar. Since they have already started, they will definitely keep chasing. Listen! It looks like some kind of white-headed torpedo active sonar. I think the threat can be eliminated." Marin said and handed the headset to political commissar.The political commissar took the earphones and listened carefully for a while. He was sure that Marin's judgment was correct. The sound of the torpedo gliding through the sea was not as sharp as before. From the perspective of the Doppler effect, it was moving away from here; in addition, the active sound of the torpedo The interval between nanopulse transmissions is a bit long, perhaps as Marin said, it is a "white head.

"Our torpedoes won't run around like an idiot." The political commissar laughed softly, and India's anti-submarine capabilities in the air somewhat reassured him.

"But if there is a submarine nearby, it's a different matter. The wire-guided torpedoes launched by the submarine can run around like headless chickens without being scattered." Captain Marin said while looking at the stopwatch in his hand. Indeed, the submarine The heavy-duty torpedoes launched are not as easy to deal with as these fully acoustic self-guiding guys. After all, the wire-guided torpedo can repeatedly search for suspicious areas according to the operator's guess before the wire and fuel are exhausted.

"From the point of view of time, the fuel of this torpedo is about to run out, if it is really an ordinary 'white head'." Marin said with a stopwatch.He knew that even if he was wrong in his judgment, this type of light torpedo would not swim very long.

"You're always worried there's a submarine around?"

"Yes, it's one thing to dodge submarines in shallow water, another to dodge helicopters; you know, helicopters can be a bit more of a threat down the continental shelf, but we can't do both at the same time, can we?"

"I don't think so, Comrade Captain."

"Oh?"

"If they want to send a submarine nearby, they have to take a lot of risk of fratricide, so I think even if there are a few submarines, they should wait outside the attack distance of the torpedo and wait until the helicopter attack is over. Submarines are on the scene. But in this way, their submerged time will be insufficient, and they will inevitably return to the surface of the sea, so it will be impossible to effectively track us." Political Commissar Su Changjin said.

Marin looked at the chart again, and what the political commissar said was not unreasonable. Judging from the radius of the light torpedo, it is unlikely that there are enemy submarines within a radius of tens of nautical miles, but he has been thinking about the one that almost appeared on the channel just now. The explosive device was very powerful from the soundprint, and it didn't seem like a device thrown by an airplane.Maybe someone intentionally exploded a mine in its own lane?This possibility cannot be ruled out.In addition, the political commissar always thinks that if there is a delay, the hidden Indian submarines nearby will return to the depth of the snorkel by themselves.

"If you think our current route is not safe enough, there is a trench in the southeast, maybe we can use it to avoid active sonar." The political commissar was well aware of his old partner's suspicious character, so he put forward a new suggestion.

"It's okay, but it's a pity that our survey ship has never been to this place, and the hydrogeographic data is not accurate enough. The water environment is not detailed." Marin replied, he knew that under such circumstances, the Indian Navy who is familiar with the situation in this area With the help of submarine geography, the advantages will be more obvious.

"Then you make up your mind. We have another way. Go south, constantly changing course and depth. If we change between water temperature layers, we can get rid of passive sonar tracking. You see, 20 nautical miles to the south is high Near the mouth of the Wery, freshwater rivers of this kind, there is always a layer of density which is good for our concealment."

"I think the trench in the east is better, at least there is a water depth of 150 meters." Marin said with a wry smile. He has weighed the second plan of the political commissar. It is not very safe near the continental shelf. And the nearby water temperature gradient data are not readily available, and the trench to the east is at least marked on the map.

25 nautical miles away, the Indian Navy's nuclear submarine INS Arihant.

Just now the sonar department of the "Enemy" successfully used the reflection of the active pulse of an active torpedo launched by a helicopter on the seabed to discover and secretly followed a suspicious submarine.This distance was originally far greater than the passive sonar listening range of this boat, but because Colonel Manoush came prepared, he had a precise grasp of the gradient change data of the water temperature and salinity in the surrounding area, so he could always be effective. Use the special underwater acoustic channel to listen.This very accidental opportunity suddenly fell on him, which made him feel that the gods had always been protecting him.However, now he is faced with a problem, unable to tell the situation to the 2 rumbling patrol ships on the sea. He has always hoped that these 2 ships can attract the attention of the enemy, but now they are facing due south in a daze Drive, maybe run in the direction of the helicopters that dropped the torpedoes, so you will miss the Chinese submarine.

Manush decided not to risk losing his target and went up for radio communication.He is going to abandon these patrol ships and act alone, but he must reduce the speed first to avoid excessive power and make the noise of the cooling pump too loud; If the sonar found it, it would be extremely difficult to eliminate her.Of course, he still has another advantageous weapon in his hand, which is the most complete and accurate sea chart in this area, which is definitely not the same as the information in the previous Chinese submarine. Using his understanding of the topography of the seabed, he can There are some ways to find some shortcuts and slowly catch up to the sub ahead.

"Sir, the enemy's signal has disappeared. They avoided the hydroacoustic concentration area and must have dived deeper." The sonar department reported.

"Don't worry, as long as they leave the continental shelf in a hurry, sooner or later they will get their feet out." The colonel said confidently.

"What if they exploit the geo-blocking of the ocean floor?"

"I believe this is not possible with their nautical charts and inertial navigation. If they use active acoustic seafloor surveys, it will definitely be exposed, otherwise, sooner or later they will be knocked on the rocks." Manush said, in In his view, these are the two results that are bound to happen.

"Okay, keep the depth, the heading is 080, and the speed remains the same. I'll go to rest for a while, and if there is any situation, come to me immediately." Manush transferred the command to the officer on duty, turned around and thought about leaving the command cabin, and went to the cabin He stopped at the door again, and there are still some things to explain: "Be careful of those helicopters, and don't get too close to the area where they dropped the torpedoes just now. Those mindless torpedoes can't tell the enemy from us. Of course, this will They should have already gone back to refuel." Manoush said to himself and got out of the cabin. The submarine commanders in any country are similar, and he is full of suspicion.After the confession, he walked out of the command cabin and returned to his cabin to rest. According to his judgment, it would probably take 10 to 15 hours for the Arihant to catch up with the enemy boat, and he would have to sleep for a while before that.

On the surface of the sea, two Sea Kings are preparing for the next round of active sonar search, and their fuel can last for a while, at least enough to allow them to launch all the torpedoes; but the headquarters suddenly informed them to return immediately, lest Injure nearby friendly submarines.The concern of the Eastern Naval Command is not unreasonable. Sea King’s pendant sonar can emit active sonar pulses at a large angle. If the operator just searches aimlessly, the possibility of his submarine being exposed first is very high. Big.As a result, the driver had to raise the altitude resentfully and return to the base.

In the 411 boat, the political commissar urged Marin to rest for a while several times, but the captain was always in a state of excitement and refused to leave the combat post. He was still thinking about various puzzles, except for the explosive device that exposed himself, and the interception by the translation room. The long-wave telegram with only a few words.He knew that it was probably an order to summon an Acura II, which was one of the few enemies he feared the most in this sea area.It is known that this Russian nuclear submarine leased to India is the quietest attack nuclear submarine in the world.So Marin has been standing behind the sonar monitor and staring at the movements in all directions. Judging from the summary of the sonar information of all parts of the boat, the three-element sub-array sonar on the side is more reliable, and has been very effective in detecting far away The patrol ship formation of 411 was conducting precise ranging and tracking, so he was not in a hurry to release the towed line array sonar.

"We have to lower the speed a little more," said the captain.Everyone else in the command cabin looked back at him, not knowing what he was thinking suspiciously again.

"The course remains unchanged, and the speed is reduced to 3 knots." The captain suddenly issued a new command. This abnormal command surprised everyone in the command cabin. If the speed drops to what he needs, the efficiency of the rudder will undoubtedly increase. Dropped a lot.Once there is a situation, it is difficult to deal with it.

The political commissar hurried over and asked, "Do you feel that something is wrong?"

"Yes, there is something wrong. We need to stop for a while and carefully distinguish the surroundings."

"What about those helicopters coming back?"

"I think those helicopters should have left. Maybe on purpose,"

His words startled the political commissar, he didn't expect the captain to come to such a conclusion after thinking about it for a long time.

"Do you wonder why they haven't used active sonar? I think this is very suspicious. I have thought about it for a long time. One possibility is that there is their own submarine nearby, maybe a Shark class. They are worried Active sonar will expose your sub, so..."

"Old Ma, what should I do if the cafeteria is open? It's already 5 pm." The political commissar interrupted the captain's unrealistic suspicion and asked a more realistic question.

"Well, non-duty personnel can go to the cafeteria now, but talking loudly is prohibited. In addition, temporarily turn off the fresh water processor to reduce all unnecessary noise."

"I think you should go get something to eat, too."

"No, I have to stay here, I always feel nearby..."

Ma Linru began to repeat his worries about the surrounding waters again and again.Political commissar Su Changjin shook his head aside, he thought, this position is really torturous.

(End of this chapter)