I have to say that in recent years, the Indian submarine force has used the Bay of Bengal as a backyard in vain, and the terrain and landform below the seabed are familiar to the road.

This is also one of the important components of the combat effectiveness of submarines, just as the army is familiar with the terrain, submarines must also have a clear understanding of the sea conditions in the sea areas that are often frequented, so that in wartime they can make use of the seabed landform, the direction of ocean currents, the density of water temperature, and other conditions to formulate a practical combat plan.

Why did the United States and the Soviet Union send submarines to roam around in the depths of the ocean during the Cold War, in addition to deterring each other, exploring the sea conditions was also an important purpose; otherwise, once the Cold War turned into a hot war, submarines would probably suffer a big loss if they did not know the sea conditions in unfamiliar waters.

Although India does not have the ability of the United States and the Soviet Union to explore the world, it is not difficult for a small place like the Bay of Bengal, so Singh has long known that there is a small submarine mountain range on the side of the trough 90 nautical miles southeast of Chittagong.

Although it is not large, it is more than enough to hide from a conventional submarine with a displacement of less than two thousand tons.

The reason why Singh acted like this is very simple, he really knows too much about the Type 037 hunting submarine.

As India's ace submarine commander with outstanding technical and tactical capabilities, Lieutenant Colonel Singh went to the Soviet Union for further study in his early years because of his operation of the Soviet Union's "Foxtrot" class, during which he practiced anti-submarine subjects with the 6641 hunting submarine (the Soviet original version of China's Type 037 hunting submarine) that had been eliminated at that time.

Therefore, he was familiar with the "Tamir" hull active sonar equipped with it, and because of this, when he heard the super-pulsed sound wave hitting the wall of the ship, he did not want to give the order to hide in the submarine mountain.

Because he knows very well that although the "Tamir" hull active sonar can lock onto the target, its accuracy is very poor, especially in the sea area with complex terrain, which is often interfered by the terrain and submarine clutter, so that the target cannot be found at all.

In fact, it was true that when Singh commanded the Sheshuma to plunge headlong into the undersea mountains, Rahul's face became more and more ugly, as the hull sonar operator reported two diametrically opposed targets to him in less than a minute.

As long as it is a normal person, how can it run out of more than 20 nautical miles in one minute with the speed of a submarine, so the problem is self-evident, the hull sonar of the 037 anti-submarine enhanced version is interfered with by the complex topography and clutter on the seabed.

"When I go back this time, I must ask Congress to approve a special fund to replace the hull sonar of the 037 anti-submarine strengthened version, otherwise it will be too passive. ”

Rahul thought so, but instead of stopping there, he commanded the radio: "Release the towed sonar." ”

At the sound of the order, the stern of the 037 anti-submarine reinforced model dropped an orange device similar to that of an aircraft, and the sonar array began to move back slowly with a cable-like drag.

More than 20 minutes later, the sonar array of more than 100 meters was completely submerged to the bottom of the sea, and in the towed sonar operation room in the middle of the hull, the Bangladeshi naval officer in charge of signal collection began to debug nervously, and the passive sonar began to work after a while.

Sound wave messages began to be displayed on the oscilloscope one by one, and the signal collector with the headset carefully distinguished the signals with a frown, trying to find the Indian submarine hiding in the undersea mountain range.

However, forty minutes passed, and the towed sonar re-navigator was deepened several times, but the result was still a noisy background noise from the bottom of the sea, and no artificial noise could be found.

Rahul is also a Bangladeshi elite who has studied in Britain and the United States, and when he looks at this situation, he knows that the Indian submarine is estimated to have turned off all the power systems and hid in that corner to consume himself.

In fact, Rahul really guessed correctly, after the "Shishuma" hid in a corner of the submarine mountain range, it immediately turned off the power system under Singh's command, and at the same time implemented silent control for the whole ship.

So at this moment, the "Xishuma" is as if time has stood still, it is terrifyingly quiet, even if it is breathing, it is careful to breathe, for fear of making the slightest sound.

In this case, Singh's command was not carried out in verbal language, but with pre-programmed gestures, and at this moment Singh's face was full of pride, and Kalimantan on the side gave him a thumbs up in admiration, because they could judge from the disappearance of the active sonar that the Bangladeshi warships had nothing to do with them.

In this game, they India won again.

All that remains is to take advantage of the direction of the ocean currents and slowly drive the submarine "Hishuma" out of the mountains, and then return to Kolkata without noticing, after which the collection of these days can be handed over to the media, thus completing this long journey.

In this regard, Singh and Kalimantan can be said to be tacit, and it can be seen from each other's eyes that the two of them want to go together, so without Singh's order, Kalimantan has already crept over to the non-commissioned officer operating the submarine, stretched out two fingers, and signaled to maintain two knots of speed.

The non-commissioned officer would immediately start the submarine, and the propeller in the tail began to rotate slowly, and then with the deflection of the rudder surface, the "Hishuma" began to think about slowly moving out of the mountains.

However, just as the "Xishuma" was about to bypass the mountain peak where it was hiding, a muffled sound of "dong~~" exploded in the ears of Indian officers and soldiers like thunder.

With a slight tremble, as if there was a roar from hell, all the officers and soldiers, including Singh, trembled, and then a terrible thought came to their hearts—a deep bullet attack.

However, this thought has not yet dissipated, and the familiar "bang~~bang~~" locked by the active sonar once again resonated in the hearts of Indian officers and soldiers like a death knell, obviously the Bangladeshi ships locked them again, and based on the situation just now, it is very likely that Bangladesh will attack again in a short time.

"What should I do, sir, do you want to fight back?"

At this moment, Kalimantan also didn't care about the mute control, and his pupils were bloodshot and roared at Singh, and as soon as these words came out, other officers and soldiers also looked at Singh.

If you don't use knives and guns, you can toss as much as you want, even if you admit that you are instigated, there is no shame, but Bangladesh used a deep bullet attack, which is tantamount to saying that it is an act of war that wants to put them to death.

Singh didn't expect the Bangladesh Congress to be so bold and dare to use a deep bomb, which is no longer a question of whether to slap the face, but has risen to another level, and the suddenness of its occurrence has even made him too late to seek authorization from the country, and he must make a decision.

Even if Singh is a senior submarine officer, it is the first time that a big girl has been on a sedan chair in the face of this situation, but after all, Singh has that ruthlessness unique to the Indian high caste in his bones, so he quickly reacted after a short period of astonishment: "All of them, sound the alarm, seize the position, and start counterattacking!"