.Raymons finally breathed a sigh of relief after the North Carolina turned.

Because it was a counterclockwise turn, the North Carolina was sailing eastward, passing by the south of the Troy Sea peak without adjusting the course again.

During the steering process, the sonar leader of the North Carolina strictly followed the combat code and used the side sonar array and the drag sonar to search the sonar blind spots on the route.

Although during normal voyage, the North Carolina can use six sonar arrays on both sides of the hull for detection and search, due to computer performance limitations, only half of the sound speakers on the sonar array can be used, and the detection distance and accuracy are greatly reduced. When conducting a key search for a certain sea area, the three sonar arrays on one side will be turned off, and all sound speakers on the three sonar arrays on the other side will be opened to improve the detection distance and accuracy.

This method can also be applied to drag and drop sonar.

If the drag sonar is in a more ideal detection position, the computer will let the side sonar array "idle", giving priority to the information intercepted by the drag sonar.

Because the line is larger and the noise is less disturbed by the submarine itself, the remote detection capability of dragging sonar is more prominent.

It is just that the drag sonar is not a rigid body, and the relative distance of the sound speakers scattered on the drag rope is not constant, so the positioning ability of the drag sonar, that is, the detection accuracy is not as good as the side side sonar array.

Only by combining the two and learning from each other’s strengths and weaknesses can the detection capabilities of the submarine be greatly improved.

The large radius steering gave the North Carolina enough time to search the sonar blind spots on the route and find enemy boats that might be following behind.

Until the end of the turn, no suspicious noise sources were found on the North Carolina.

After reaching the ninety-degree course, the sonar long switched the side sonar array and dragged sonar to normal working state.

Because I don't know where the "unidentified" submarine is hidden, the North Carolina will search the surrounding waters in a comprehensive manner.

All Ramons has to do is wait patiently.

As long as the "unidentified" submarine is hidden near the Troy submarine peak, it will appear at the right time and escape before the anti-submarine patrol aircraft returns.

The wait won't be long, as the anti-submarine patrol aircraft will be reversing in four hours.

If the "unidentified" submarine does not take the opportunity to run dozens of nautical miles and leave the key search waters of the anti-submarine patrol aircraft, the chance of being caught by the anti-submarine patrol aircraft will be very high.

The later the "unidentified" submarine appears, the faster it escapes and the greater the noise it makes.

If you drag it down, it will be more beneficial to the North Carolina.

Ramons was patient and before becoming the major captain, he served on three submarines for twelve years and furthered his studies at the Quantico Naval Academy for three years.

As an excellent submarine captain, the most important thing to lack is patience.

As time passed by minute by minute, Ramons not only did not have any anxiety, but felt that he was sure to win.

It was not until half an hour later that the North Carolina arrived about a nautical mile south of the Troy Underwater Peak that Ramons suddenly woke up.

Because the distance from the Troy undersea peak is not far away, within the drawing range of high-frequency active sonar, the computer can actively filter out the high-frequency signals when processing the signals intercepted by passive sonar. Therefore, the sonar head did not ask Ramons to survey and map the southern slope of the Troy undersea peak according to the initial order issued by the captain, and then compared it with the seabed topographic map in the database.

The comparison results did not have obvious deviations, but the sonar was puzzled.

The sonar had no tactical decision-making power, so he immediately found Ramons.

"Campbell, you know, I don't have time to talk nonsense to you now." Ramons glanced at the dark-skinned fifth-class officer with a traditional English surname.

On a submarine, the sonar chief is the highest-level non-commissioned officer. If you do well, you will have the chance to become the naval chief.

"Captain, I only need five minutes, no, two minutes are enough."

"Okay, don't let me down."

Campbell quickly took out a fourteen-inch handheld computer, and there were two overlapping maps on the screen. Ramons could see it at a glance, which was a bottom-sea topography.

"About an hour and a half ago, we detected a Haitian geological activity."

“I asked you to deal with it in the southwest of the Troy Undersea Peak.”

Campbell nodded and said, "I marked the location and let the computer handle it themselves. Because we adjusted the route, we did not reach the south of the Troy submarine peak until this time. Under computer control, high-frequency active sonar depicted the seabed terrain of this location."

"Then what?"

"This is the topographic map drawn, and the dark yellow part is the topographic map in the database."

Ramons picked up the computer, looked carefully, and said, "Nothing is wrong?"

"No exception, it is the biggest exception."

Ramons immediately frowned and asked Campbell to continue.

"At that time, the computer concluded that a landslide and rock collapse occurred here." Campbell pointed on the computer screen, "But judging from the depicted topographic map, there was no violent geological activity here, and no huge rocks slipped down from the hillside. If..."

Ramons pressed his hands down, and he already understood what Campbell meant.

Noise exists clearly, and if it is not caused by geological activities, there is another reason.

There is only one possibility that a computer can generate huge noise caused by rock collapse, that is, a submarine with a large displacement is sinking here!

Although the submarine will not be fast when sinking, the impact of the huge tonnage on the seabed cannot be underestimated.

It must be a submarine, and it is an attack nuclear submarine with a displacement of 5,000 tons or even more than 7,000 tons.

Seeing Ramons not talking for a long time, Campbell hesitated for a moment and said, "Captain, this is just my guess, maybe it's not..."

"Campbell, go back to your post."

The sonar was stunned for a moment, and when he saw the captain's serious expression, he thought he had done something wrong.

"You're doing well," Ramons smiled at Campbell with a frightened face and said, "I'll remember it and write it in the navigation log. If you can find that damn submarine, I'll apply for a battle medal for you. How about it, are you confident to find it?"

"That submarine is near us?"

Ramons nodded and looked serious again.

"I will do my best to never let it slip away."

"Go back to your post, we have to solve this problem as soon as possible."

After Campbell left, Ramons did not rush to issue an order.

As a captain, the issues he considered were much more complicated than sonar.

The "unidentified" submarine was there before, but now it is gone. It must have been when the North Carolina searched the Troy underwater peaks in the counterclockwise direction, the "unidentified" submarine used the mountain to block it and quietly left. There are two possibilities, one is to leave this sea area, and the other is to use the sonar blind spot at the tail of the North Carolina and follow it all the way behind.

If it is the former, the North Carolina will be a waste of work.

An hour and a half is enough to get an attack nuclear submarine to run dozens of nautical miles away from the search area of ​​the North Carolina and the anti-submarine patrol aircraft.

If it is the latter, it is dangerous.

Thinking of a submarine carrying dozens of heavy anti-submarine torpedoes behind the butt, which can launch attacks with four torpedoes and even more torpedoes at the same time, Ramons fought in a cold way.

As long as the other party is willing, it can launch a torpedo before the North Carolina detects it.

The problem is that the North Carolina was not under attack.

There is only one possibility that the "unidentified" submarine did not intend to provoke a battle, but just wanted to avoid the US anti-submarine search and leave the sea safely.

Not wanting to fight does not mean that you cannot fight, nor does it mean that you cannot fight back.

As long as there is a slight movement of the North Carolina, the "unidentified" submarine will launch the torpedo before losing its initiative.

At least, Ramons will do this, rather than giving the initiative to his opponent in vain.

What should I do now?

Ramons immediately thought of several tactics, but they all felt that it was not safe.

Turn again, and do a small radius steering. Before stopping the enemy boat, turn the side side toward the rear to intercept the noise emitted by the enemy boat. Accelerate the advance and accelerate it rapidly, allowing the thruster to quickly reach the maximum thrust, open the distance from the enemy boat, and leave the torpedo attack area. Float urgently, reach near the sea surface, form a depth difference with the enemy boat, use the temperature jump layer to get rid of the enemy boat, and find a suitable counterattack opportunity. Launch a communication float, send a signal for help, and wait until the p-3c anti-submarine patrol aircraft arrives, hunt the enemy boat together.

After coming up with various tactics, Ramons did not hesitate anymore and issued several orders in succession.

The first command is not to speed up or float up, but to cut off the drag and drop sonar.

Although towing the sonar is worth hundreds of millions of dollars, it takes several minutes to retract the sonar, and Ramons believes that the "unidentified" submarine will not give him a few minutes.

Only by throwing the drag sonar can the North Carolina accelerate and make sharp turns.

In order to enable the thruster to reach the maximum thrust at the fastest speed, the reactor must first reach the maximum output power, then disconnect the second circuit, concentrate the heat released from the core in the first circuit, so that the reactor can reach the maximum output power in the natural cycle working state. Wait until the core temperature is close to the critical value of melting, then start the second circuit and let the reactor enter the pressurized water cycle working state.

Using this method, the North Carolina can increase its speed from zero to thirty-four knots within three minutes.

There are great risks to do so.

If the second circuit is not started in time and the water temperature in the first circuit drops, the core will melt, and even an explosion occurs because the water pressure in the first circuit is too high.

But Ramons is more willing to take this risk than being hit by a torpedo.

When the speed exceeds thirty knots, the North Carolina can make a sharp turn, because only in this way can the sidewalk be facing the rear at the fastest speed. If the enemy boat accelerates with the North Carolina, it will make greater noise and be more likely to be detected by the sidewalk sonar array.

The North Carolina, with an underwater displacement of up to 7,800 tons, is not a fighter. It is not as agile as a fighter and cannot complete maneuvering operations like a fighter. Fortunately, the agility of the enemy boat is no better than that of the North Carolina, and the speed of the torpedo is much slower than that of the missile.

As long as the maneuver is decisive and quick, the North Carolina has a great chance to escape danger.
Chapter completed!