Night, the real danger is not on land, but at sea. [Full text reading]

Because the ROK Air Force lost its combat capability and could not threaten the aircraft carrier battle group, on the afternoon of 7 July, Chang Weichang ordered the cruisers "Kunlun" and the destroyers "Hongzehu," "Gaoyouhu," and "Dongtinghu," which were accompanying the aircraft carrier in the operation, to go north to join the support fleet and carry out artillery support missions. Although cruisers and destroyers are not the main anti-submarine warfare ships, the lack of escort warships makes the fleet's anti-submarine network more sparse.

To make matters worse, the fleet had to turn at night to receive supplies.

The "Huaxia" class aircraft carrier is capable of carrying 2800 aviation fuel and 1 aviation ammunition, and according to the calculation of 120 fighter sorties per day and the consumption of 6 aviation fuel and 3 aviation ammunition per sortie, the theoretical combat self-sustaining capacity of the "Huaxia" class is as follows. Because the actual situation is very different from the theoretical calculation, the actual combat self-sustaining capacity of the aircraft carrier is between 2 and 7 days due to the influence of factors such as combat intensity, sortie distance, and the nature of the mission.

From the night of the 6th to the evening of the 7th, in 20 hours, the three carrier-based aircraft wings made a total of 1,173 sorties, of which 82 were fighter sorties, with an average of 38 combat missions per fighter and a mission cycle of only one hour. Even by the standards of shore-based aviation, this can be regarded as an extremely high-intensity combat operation.

In 20 hours, the 3 air wings consumed a total of 17: aviation fuel and 2143: ammunition.

Although the remaining aviation fuel and ammunition on the three aircraft carriers will last until the afternoon of the 8th, the marines will arrive at Jeju Island on the morning of the 9th, and the carrier battle group will carry out another high-intensity bombing mission on the night of the 8th, and the replenishment operation must be completed before then.

Ships carrying out replenishment operations are the most vulnerable to submarine attacks.

Because the ROK military is storming the defense line of the airborne troops and cannot send reinforcements to Jeju Island for the time being, the three aircraft carriers must be resupplied separately, and when at least two aircraft carriers can be resupplied normally, the aircraft carriers must stop all aviation operations. As a result, the replenishment operation will continue overnight.

The biggest headache must be Hua Jianfeng.

He was responsible for the supply work. And again responsible for the fleet anti-submarine.

19 o'clock. When the fleet turns. Hua Jianfeng made arrangements for the supply operation.

The "Yandi" first joined up with the supply ship. When the "Yandi" was carrying out a replenishment operation. The "Huaxia" and "Yellow Emperor" sailed at a speed of 32 knots. sending warplanes to provide air support to the Airborne Forces; The anti-submarine frigates in the fleet concentrated on protecting the "Yandi", the place of replenishment operations. The HNA anti-submarine patrol aircraft is responsible for perimeter anti-submarine warfare.

Because the South Korean Navy has only conventional submarines. So Hua Jianfeng was not worried about the attack on the other 2 aircraft carriers.

To prove it. Hua Jianfeng asked the anti-submarine warfare officers of the "Huaxia" to use a computer to conduct a simulated attack.

The South Korean submarine ground heavy anti-ship torpedo ground has a maximum speed of 7. At this speed, the ground noise is more than 120 belongels. It is easy to be detected by the passive sonar of anti-submarine helicopters or anti-ship warships on the ground in the fleet. The "Huaxia" class aircraft carrier is avoiding torpedo ground. The two HD2 fusion reactors are capable of operating at 125% of the rated maximum emergency output power. Increase the ground speed of the aircraft carrier to more than 35 knots! And so it goes. South Korean submarines had to fire torpedoes at a distance of 20 kilometers to ensure hitting the aircraft carrier at full speed. Not to mention whether the South Korean submarine captain had the guts to approach. Even if there is. It is not necessarily possible to break through the 3 anti-submarine nets. Shoot torpedoes without warning. If a South Korean submarine shoots a torpedo at a distance of 25 km. The aircraft carrier will have 1 place to escape from the torpedo attack range!

Computer simulations confirmed Hua Jianfeng's analysis.

The key is that South Korean submarines must not be allowed to shorten the attack distance to less than 25 kilometers!

After sending the "reinforcement fleet", only 3 anti-submarine helicopters remained in the aircraft carrier battle group. Since 2 aircraft carriers need to make sorties of carrier-based fighters, it is not possible to achieve the optimal sortie rate of anti-submarine helicopters. As a result, only 12 helicopters on frigates, 6 anti-submarine helicopters on cruisers and destroyers, and anti-submarine helicopters on aircraft carriers receiving supplies can carry out anti-submarine missions. The 18 helicopters will certainly not be able to ensure the safety of the 3 aircraft carriers, and more anti-submarine forces will have to be deployed.

In the afternoon of the same day, Hua Jianfeng personally contacted the shore-based aviation unit and asked to send as many antisubmarine patrol planes as possible.

Without the slightest reservation, the shore-based aviation divided the 36 long-range anti-submarine patrol planes deployed on the eastern coast into three batches and took turns to provide anti-submarine cover for the aircraft carrier battle group.

Even so, the anti-submarine forces still look very thin.

The only thing left is the submarine lurking under the surface of the sea.

Before the fleet turned, Hua Jianfeng managed to contact six nearby submarines.

Among them is the "finless porpoise" commanded by Liu Haifeng.

After receiving an order from an antisubmarine patrol plane to use high-frequency sonar, Liu Haifeng adjusted the route of the "Finless Porpoise" to the west of the fleet on the night of 6 June, and immediately began to maneuver to the south of the fleet.

As an excellent captain, Liu Haifeng realized that it was easier to get opportunities in the south.

Because the attack on Jeju Island was 24 hours earlier than expected, the aircraft carrier battle group was still sailing north to shorten the fighters after it was put into battle

distance, improve the efficiency of aviation ground operations. As a result, the South Korean submarines in ambush either did not have time to enter the ambush position, or did not dare to show their heads when the aircraft carrier battle group approached at high speed, otherwise they would not have disappeared to this day. Only South Korean submarines ambushed south of the carrier battle group will follow suit and move north to ambush while the carrier battle group turns to rendezvous with the supply ships.

Liu Haifeng thought very clearly, because if he was asked to do it, he would also choose to ambush the south of the aircraft carrier battle group, rather than the north.

After receiving Hua Jianfeng's order, Liu Haifeng asked the "Finless Porpoise" to turn to the south of the supply sea area in advance, and then released a towed sonar.

The captain of the South Korean submarine is not a god, and it is impossible to accurately judge the exact location of the supply area.

Only when the aircraft carrier is carrying out resupply operations will South Korean submarines take the opportunity to approach and then fire torpedoes at as close as possible.

At 211:30, Liu Haifeng returned to his command post.

Like all young officers, Liu Haifeng is particularly energetic. When performing combat missions, they are able to hold on to their posts for several days. Even if you need to rest, you should not sleep for more than 3 hours at a time.

"How's it going?"

"There are suspicious targets, but they can't be identified." Zhang Xuefeng glanced back at his partner and pointed to the screen in the upper left corner of the sonar control center, "It's still a yellow signal, and the computer analysis thinks it's a large sea creature." ”

"Large sea creatures?" Liu Haifeng frowned, "Will whales enter the Yellow Sea in winter?" ”

"I can't say for sure." "Last January, we encountered a cruising pod of whales here. ”

Zhang Xuefeng nodded, indicating that he remembered what happened last year.

"It can't be such a coincidence, right?" Liu Haifeng touched his chin and said, "Is there a way to measure the target speed?" ”

"It's completely impossible, I've tried a few times." The sonar chief pointed to the screen in the lower left corner, "Now it can only be confirmed that there are at least four targetables, in fact, maybe six, or even more." The sonar received intermittent ground signals and could not be analyzed on the route. ”

It is not possible to analyze the route, nor can it get the speed.

"Did you run a simulation?"

"Tried it, and the result was the same." Zhang Xuefeng sighed, "The result of the computer analysis is a large marine biome that is migrating, and it is impossible to analyze the individual. ”

"Analyze it manually." Liu Haifeng's thinking turned quickly, "Use the time coordinates to mark the approximate coordinates of the target, let's see if there are any unexpected gains." ”

The sonar chief did not ramble any more, and called up the data stored in the fire control system as instructed by the captain.

Seeing the dense icons on the screen with the time in the lower right corner, Liu Haifeng thought for a while, picked up the signal pen placed on the console, and connected some icons on the screen into a line.

"Analyze the average and maximum speeds of these four routes with a computer."

"Does maximum speed make sense?"

"Of course, let's do it."

The sonar chief smiled wryly and entered the instructions for data analysis into the computer.

Shortly after, several analyses appeared on the large screen at the top of the center. In the target, the maximum speed reached 17 knots, and the minimum average speed was 8 knots. Not unusual, many cetaceans travel within this range, with some whales chasing their prey at speeds of up to 28 knots.

"Is there a catch?" Zhang Xuefeng glanced at his partner.

"I can't say there isn't for the time being." Liu Haifeng didn't want to joke, patted the sonar on the shoulder, and said, "Show the four routes in a three-dimensional way." ”

The sonar chief sighed to himself and did as the captain commanded.

"Very good, add the tactical map to indicate the location of our boats, aircraft carrier battle groups, supply ships and supply sea areas."

Zhang Xuefeng frowned slightly, as if he understood what his partner meant.

When the war zone map appeared on the big screen, Liu Haifeng showed a smug smile. "Let the computer process the four routes according to the route of the submarine and estimate the route of the subsequent ground."

When the computer results appeared on the screen, Zhang Xuefeng showed a look of surprise.

"Yes, now optimize all the coordinates of the suspicious target to see if there are four targets, or more targets."

The results came out quickly, but the goal was 6 instead of.

Needless to say, computers are still so low in intelligence that they are unlikely to replace the human brain. At the very least, people can make analytical judgments based on experience, while computers can only make analytical judgments based on existing data.

No matter how good the weapon system is, it will not be able to exert its combat effectiveness without excellent operators.

"Give the battle order." Liu Haifeng let out a long breath and patted the sonar chief's shoulder, "When the signal appears again, estimate the approximate distance of the target and send the information to the big screen of the fire control console." ”

Zhang Xuefeng issued the battle alarm as quickly as possible, and Liu Haifeng also entered the state as quickly as possible.

Not everyone can do miracles! (To be continued, if you want to know how to know the future chapters, more,!) )