.After receiving a call from Yang Yuanfan, Zhou Yusheng rushed over immediately. Mu Haoyang and Li Xiaoming stayed and had nothing to do, so they went to the propulsion cabin with Zhou Yusheng.

"What's going on?" I couldn't explain it clearly on the phone, otherwise Yang Yuanfan wouldn't have called Zhou Yusheng over.

"The leak point is under the Second auxiliary cabin," Yang Yuanfan had taken off his wetsues and wrapped them in two blankets. He was still trembling with coldness, and his lips turned blue. "I went down to see. The damage caused by the impact has been deformed. The damaged part is about thirty centimeters long and five centimeters wide, and is bulging toward the inside. He must have hit the protruding rock. Fortunately, the speed is not fast, otherwise we would have finished playing."

"Can it be blocked?"

"Not here." Yang Yuanfan sneezed, wiped his snot and said, "The water temperature is very low, so you can only stay below for five minutes at most. The damage is under the motor's shock absorber raft. You can reach it just by reaching your hand. After stuffing the steel plate in, there will be no room for work."

Zhou Yusheng nodded, indicating that he understood Yang Yuanfan’s meaning.

"If you want to repair it, it is best to float up. Don't float on the surface of the Shanghai surface. When you reach the depth of the periscope, you will first remove the motor and then try to plug the loopholes." Yang Yuanfan sighed and said, "Even so, the workload is very large. If you take turns to work, it will take at least ten hours."

“It can’t float up now.”

"What should I do?"

"Close the hatch door." Zhou Yusheng said, "Shut off the auxiliary motor No. 2 and recheck the main propeller. You go to the reactor compartment to check it out and make sure that the reactor is working properly."

"There is only one motor, and the power is not enough." Yang Yuanfan nodded to the sailor behind him and asked him to lock the watertight door leading to the No. 2 auxiliary cabin.

"Then try to minimize power consumption and turn off all unnecessary equipment."

Yang Yuanfan sighed and said, "That's all."

"Go quickly, I'll go back to the command cabin and come here immediately if there is a result."

Mu Haoyang and Li Xiaoming didn't even get a word, and followed Zhou Yusheng back to the command cabin.

“Is an auxiliary motor so important?”

Zhou Yusheng looked back at Li Xiaoming and said, "There are three motors on the submarine, two of which are auxiliary motors and one is a backup motor. The auxiliary motor is directly driven by the main machine to provide electrical energy for the electrical equipment. The backup motor is powered by a battery and drives the attitude thruster. An auxiliary motor can only meet 70% of the normal power consumption of the submarine, so some secondary power consumption equipment must be turned off."

"The speed of the submarine will not be affected, will it?"

"I won't know yet, but I can't guarantee it if it will happen in the future."

Li Xiaoming was stunned for a moment and did not understand what Zhou Yusheng meant.

"When sailing normally, the most electricity is not electronic equipment, but the cooling system of the reactor and main thruster, which consumes about 60% of the electricity. Although an auxiliary motor can meet the demand, the motor is not the main machine, and it is easy to fail after long-term operation at full load." Zhou Yusheng sighed and said, "The sea-type of the 'Shark' has not been completed, and many systems are unstable. At the beginning of the year, the auxiliary motor had problems. It was close to the base and went back in two days. There was no big problem. Now there are thousands of nautical miles to the nearest naval base, and it may not be possible to return along the shortest route. If there is a problem with the auxiliary motor on the road, it will be a big problem."

"Does the faster the speed, the more electricity the cooling system consumes?"

Zhou Yusheng nodded and said, "If the speed exceeds twelve knots, the host must be forced to cool it, otherwise the host will burn in a few hours."

"Then you can only control the speed below twelve knots."

Zhou Yusheng glanced at Li Xiaoming and said, "You said that the Americans would not give up. At this speed, we cannot return to the South China Sea before the US military blocked the Malacca Strait and the Sunda Strait. When we encounter a US submarine again, we don't even have the capital to fight to the death."

Li Xiaoming also sighed because this was the problem he thought of.

"Anyway, we are still alive and hope is not shattered."

Back at the command cabin, Zhou Yusheng found several other officers and asked about the situation.

The impact caused the Second auxiliary cabin under the propulsion cabin to break, and this place was the shortest distance between the two-layer shells. For safety reasons, Zhou Yusheng asked other officers to check other cabins. Because the two-layer shells were filled with sea water during submersible, effectively dispersing the impact force, no second damage point was found on the pressure-resistant shell. As for what the non-pressure-resistant shell outside looked like, it might be unsightly.

"We didn't hit it directly, but we hit it obliquely." Lu Chengfeng spread his left hand and squeezed his right hand into a fist, making a gesture of the scene when the submarine hit the hillside. "When the impact was hit, the submarine was still moving forward. The starboard friction with the mountain must have wiped out a lot of silence tiles, and maybe the shell was damaged."

Lu Chengfeng's analysis is correct. The damaged mouth and foot of the auxiliary cabin of No. 2 has already explained this problem.

“That is, we are not very quiet now?”

"It's okay now, the hull is next to the mountain, and the noise will not spread out. However, after leaving the mountain, the impact of the starboard silence tiles must be considered."

Zhou Yusheng nodded thoughtfully and said, "It's good that this is the case. If we lack an auxiliary motor, we can't run fast."

"If possible, it's better to leave here as soon as possible." Lu Chengfeng glanced at Zhou Yusheng and said, "Anti-submarine patrol plane must have heard the explosion and did not see the wreckage floating on the surface of Shanghai. The US military will soon search for this sea area and drop anti-submarine torpedoes again."

Zhou Yusheng smiled and turned his gaze to Meng Guangyang, who was still sitting in front of the sonar console.

"Anti-submarine patrol aircraft is still nearby and has dropped a passive sonar buoy."

"You heard it too, we can't leave now." Zhou Yusheng turned his gaze back and said to Lu Chengfeng, "But anti-submarine patrol aircraft cannot afford it, and they will have to return in a few hours. You can plan a shortest route to the Sunda Strait, and wait for the anti-submarine patrol aircraft to fly away and we will set sail."

"Or go to the Sunda Strait?"

Zhou Yusheng nodded, looked at Mu Haoyang and Li Xiaoming, and said, "No matter what, we have to send them back as soon as possible."

Lu Chengfeng didn't ask much, and turned around to the chart table.

"I have done my best," Zhou Yusheng turned around and said to Li Xiaoming. "Although the situation is not ideal, I will find a way to send you back as soon as possible."

"Old Zhou..."

"Don't thank me, remember to ask me to give me a blow."

Li Xiaoming smiled and shook his head. Zhou Yusheng still remembered the meal.

"Captain..."

Hearing Meng Guangyang's screams, Zhou Yusheng immediately turned around.

"Active sonar...Anti-submarine patrol aircraft dropped an active sonar buoy and were searching for the southern slope of the mountain."

"Calling the alarm and letting everyone enter the combat post." Zhou Yusheng sat in the captain's position and said, "Be prepared for the impact, and then start praying."

Zhou Yusheng was not kidding, and the sinking submarine was attacked and could only pray to the gods.

After hearing the explosion, the three P-3cs did not leave, but hovered over the explosion point. Although the explosion point was near the Troy seabed peak, the sunken submarine would soon fall on the hillside and no sound of the hull being crushed by sea water, there were many light objects in the submarine, and the wreckage floating on the surface of the Shanghai were soon seen.

The pilot of p-3c did not see the floating wreckage, nor did he hear the abnormal noise under the sea.

The "unidentified" submarine must have not been sunk, at least not completely finished, and is now lying somewhere on the southern slope of the Troy Sea Peak.

At this time, p-3c casts an active sonar buoy.

Unfortunately, there is no digital seabed topographic map on the anti-submarine patrol aircraft. The space on the patrol aircraft is very limited and there is not much equipment and equipment installed.

When the Shark sat in sank, the surroundings were full of sand and stones that exploded.

When the p-3c circled back and threw down the active sonar buoy, the raised sand had settled down, almost burying the Shark.

Although the acoustic reflection characteristics of sand and stone are completely different from those of submarines, active sonar can distinguish the submarine from the surrounding mud and sand even if sound-silence tiles are laid on the surface of the submarine. However, when the submarine is buried under the mud and sand, active sonar is difficult to play a role.

The only things that appear on the P-3c sonar display are covered with sand and stones on the bottom of the sea, and there are no "unidentified" submarines.

However, the US military pilot knew that the "unidentified" submarine was there.

At this time, the three p-3cs had been flying for thirteen hours. Although the maximum patrol time of p-3c was as long as sixteen hours at light load, in order to reach the target sea area as soon as possible, p-3c flew at its maximum speed for six hours, and it was planned to refuel in the air when it returned.

The remaining fuel is only enough for two hours to fly.

It takes at least one and a half hours to go to the airspace with the tanker, and half an hour of refueling time must be left, so P-3c must return immediately.

After the search was fruitless, the captain of the P-3c aircraft made a very bold decision: to drop all anti-submarine torpedoes.

Returning with a bulky anti-submarine torpedo will consume more fuel, and after returning, it will take as long as one day to return to this sea area. At that time, the "unidentified" submarine had already slipped away. Although anti-submarine torpedoes are expensive, this price is nothing compared to letting go and killing the enemy of the "North Carolina".

Even if you try your luck, you have to try it out.

After the two P-3cs set the attack route for the anti-submarine torpedoes, they lowered the flight altitude side by side to 150 meters, and each dropped four mk46s in turn.

The attack area is exactly where the "unidentified" submarine disappeared from the sonar.

Eight anti-submarine torpedoes, as long as one of them happens to hit, can keep the "unidentified" submarines there forever.

Because the oil alarm light has already lit up, after dropping the anti-submarine torpedo, the three P-3cs returned and did not stay to observe the attack results.

There is nothing to worry about, there is an RC-135 and an EC-135 behind it.

As long as the "unidentified" submarine is hit by a torpedo, the pilots of the reconnaissance aircraft and electronic warplanes can see the wreckage floating on the surface of the Shanghai area.

Under the sea, the Shark is not so relaxed.

Hearing the high-frequency whistling of the torpedoes, the officers and soldiers' hairs stood up, and Mu Haoyang and Li Xiaoming looked at each other.
Chapter completed!