Quiet, breathless quiet

The officers and men in the torpedo compartment were waiting for the captain to give the order to launch the torpedo, and the officers and men in the command center all set their eyes on Hua Jianfeng, who had never let them down

Hua Jianfeng did not open his mouth and did not make a decision

It's not that he's timid, it's that the situation in front of him can't make an immediate decision

The sudden "disappearance" of the noise emitted by the US submarine indicates that the speed of the 2 "Virginia" has been reduced to below 8 or even lower; when sailing at a speed of 4 knots, the noise level of the "Virginia" is below 94 decibels, and the detection range of the passive sonar on the side of the "Swordfish" is within 35 kilometers, and if the "Virginia" controls the speed below 2, the passive sonar on the side of the "Swordfish" will not even be able to detect the sound it makes

The captain of the American military is very cunning, very cunning!

At this time, there are only two options for Hua Jianfeng to choose, one is to release a towed sonar, and the other is to use active sonar

Neither option is ideal, and when the towed sonar is released, it makes a loud noise, revealing the whereabouts of the Swordfish; The use of active sonar not only reveals the whereabouts of the Swordfish, but also gives the adversary a reason to attack

In the blink of an eye, Hua Jianfeng thought about the encounter with the US submarine

After the US submarine made a loud noise in an attempt to lure the Chinese submarine over the Okinawa Trough and entered Japan's territorial waters, it was discovered that the Chinese submarine had not only not been fooled, but had also drawn a scoop and released the bait, and the US submarine took the initiative to rush towards the war zone at a relatively fast speed, luring the Chinese submarine to the vicinity of the Okinawa Trough and waiting for an opportunity to enter the war zone

At this point, it depends on the patience of both sides

"Cancel the attack order" Hua Jianfeng took a deep breath, "The speed will be as low as 2, closely monitor the surrounding situation"

Le Jiacheng wiped the sweat from his forehead and secretly breathed a sigh of relief

"Dog Ridi is more patient than me!" Hua Jianfeng smiled coldly and said, "Now it depends on who has stronger self-control and can resist the temptation in front of you."

Le Jiacheng nodded and said: "We must not lose to the Yankees"

Hua Jianfeng smiled and said, "What's there to worry about?" We killed ...... six years ago."

Seeing that the captain was about to say something leaky, Le Jiacheng's eyes immediately widened

Hua Jianfeng reacted immediately, and several officers in the command center did not participate in the secret operation 6 years ago, and said: "Last year, we almost let the American submarine be a substitute for the dead A week ago, we also greeted the ancestors of the American submarine for the eighteenth generation, and the US military is more active than us, so we will stay here, and wait for 4093 to clean up the Japanese fleet and see what the Yankees do."

"Maybe we should have a few beers and pass the time"

Hua Jianfeng smiled and said: "Now is not the time, after reading the jokes of the US military, it is not too late to celebrate"

"Captain, there's a noise!"

"I'll just say that the Yankees are more aggressive than us"

"It's not a U.S. submarine, direction 25, distance ......" The sonar paused sharply, and said in great surprise, "Distance 7, the computer analysis result is the sound of torpedo tube water injection!" ”

Hua Jianfeng almost jumped up, and Le Jiacheng was also stunned

At 25 degrees east-north, 7 kilometers away, a submarine is filling a torpedo tube with water!

"The first fifteen, the last fifteen, the whole ......" Hua Jianfeng stopped suddenly, hesitated, and said, "Wait, what is the bearing?" ”

"25 degrees, northeast, 7,000 meters away" sonar chief reported the complete data

Hua Jianfeng quickly glanced at the war zone chart displayed on the tactical screen, and then breathed a sigh of relief

Seeing the situation displayed on the screen, Le Jiacheng was shocked and said, "Our submarine? ”

Hua Jianfeng nodded, "It's true that it's not a U.S. submarine, if it's a U.S. submarine, the 2 'Virginia' should not only not stay outside the war zone, but should also immediately enter the war zone to lure us to fire first, expose our whereabouts, and create a reason and opportunity for the third U.S. submarine to attack us."

"Captain, there is another noise, very faint"

"Noise characteristics to 095"

The sonar chief immediately tunes the 095 noise signature from the fire control computer

Before the computer could draw conclusions, a dull sound was heard, which was heard by all the officers and men of the "Swordfish".

"Active sonar!" Lejiacheng reacted quickly, "It didn't aim at us"

"Then it's aimed at the U.S. submarine" Hua Jianfeng gritted his teeth, "No. 1 and No. 3 torpedoes are in full-speed inertial plus acoustic self-guidance mode, and No. 24 torpedoes are in full-speed plus wire guidance mode, ready to input fire control data"

"Do you want to use active sonar?"

"No, use the third-party sonar echo" Hua Jianfeng thought of tactics as quickly as possible, "Assuming that the No. 1 target and the No. 2 target are advancing at a speed of 2, and the course has not changed, after determining the target orientation, the fire control parameters are calculated"

Le Jiacheng replaced the gun officer and personally handled it

On the deep-sea battlefield, the submarine uses active sonar to directly illuminate the opponent, which is equivalent to using a flashlight to illuminate the opponent in a dark room without any light

It is not necessary to obtain the exact distance of the target in real combat, the anti-submarine torpedo approaches the target as soon as it is close

Self-guided attack mode

Dozens of seconds passed quickly, and when the passive sonar of the "Swordfish" received the reflected sound waves, the fire control computer automatically calculated the fire control parameters

The +95 that popped up out of nowhere was the "wide area search" mode, and the sound wave coverage was large

The sound waves reflected back are very complicated, and there are not only US submarines, but also submarine seamounts, and ocean currents, from which useful signals must be distinguished and interference signals removed, so that the correct fire control data can be input for the torpedo, and the amount of calculation is very large, and the fire control computer of the "Swordfish" needs more than ten seconds to complete all the calculations

As the minutes passed, Hua Jianfeng and Lejia Chengdu stared intently at the tactical screen

"Captain, the target has appeared!"

Hua Jianfeng immediately looked at the sonar chief

"Target 1 has a speed of 12 and is still accelerating Target 2 to move closer to Target 1 at a speed of more than 14"

Le Jiacheng was taken aback, and looked at Hua Jianfeng in confusion

"The Yankees are ready to counterattack" Hua Jianfeng glanced at his watch, "Turn to 90 degrees, maintain speed and depth, enter new target information, and get fire control data as soon as possible"

Le Jiacheng had just gotten busy when there was a second sound outside

Not the sound of 095 moving sonar, but the sound coming from the east

"U.S. submarines ready to attack?"

Hua Jianfeng nodded, "The No. 24 torpedo tube opens the front cover, launches first and then guides the mode"

"Torpedo tube No. 24 with the front cover open and ready for launch"

"Self-propelled out of the tube, slow mode" Hua Jianfeng hesitated a little and said: "2 torpedo launches... 4 torpedo launches! ”

Within 10 seconds, 2 torpedoes drove out of the torpedo tubes of the "Swordfish".

Fire Control Parameters

"No. 1 target azimuth 85 distance 42 depth 220 speed 18, 2 target azimuth 100 distance 44 depth 210 speed 15, is being entered into the torpedo fire control system"

Hua Jianfeng nodded, and said: "3 torpedoes changed to line guide mode, lock on 2 targets, and open the front cover tube of the torpedo launch"

"3 torpedo tube front cover open"

"Input fire control parameters, self-propelled outpipe, line guide slow mode"

With a slight sound, the "Swordfish" fired a third torpedo

From receiving the sonar wave from the US submarine to the third torpedo out of the tube, it took less than 2 minutes before and after

"Captain, 3 targets launch torpedoes, 2 pieces, speed 70 target 1 enemy boat"

Hua Jianfeng frowned slightly, 095's reaction speed was too slow

"Captain, 34th torpedo, speed 70, azimuth 15, distance 12, shot at 2 enemy boats"

Le Jiacheng was stunned for a moment and said, "Du Xinghua and Liu Haifeng are here!" ”

"What's the matter, I just said that they won't miss this good show" Hua Jianfeng smiled coldly, "Calculate the torpedo hit time, we can't fall behind Du Xinghua and Liu Haifeng"

Le Jiacheng nodded and immediately picked up the stopwatch to time it

"Captain, enemy boat No. 1 fired torpedoes, 2 with a speed of 65 to target No. 4"

Hua Jianfeng's brows jumped a few times, and then he glanced at his watch

"2 enemy boats turned and fired torpedoes, 2 at a speed of 65 to target No. 3"

"Enemy torpedo hit time!" Hua Jianfeng immediately looked at Le Jiacheng

"18 minutes and 17 minutes" Lejiacheng didn't use a stopwatch, and directly mentally calculated the answer, "It's too far, you can escape by turning within 09510 minutes"

Hua Jianfeng nodded: "Then wait for Du Xinghua and Liu Haifeng, they are not brave and unscrupulous."

"U.S. submarines will also turn to escape"

"Manually controlled torpedo" Hua Jianfeng took two steps away and gave way to Le Jiacheng, "Suppose the US submarine turns to escape after 8 minutes, and resets the course for the torpedo"

"Interception?"

Hua Jianfeng nodded, "The distance is too far, both sides have enough time to escape, Du Xinghua and Liu Haifeng don't want to get the results of the battle, whether they can take out the American submarine depends on our three torpedoes"

Le Jiacheng is very clear about Hua Jianfeng's intentions

The commander of the US submarine will definitely estimate the attack distance of the heavy electric torpedo at maximum speed, determine the time of turn and escape, and ensure that the attack range of the escape torpedo The 3 torpedoes launched by the "Swordfish" are slower, not only have a longer range, but are not easy to be detected, and wait for the US submarine to avoid the 2095 attack, and then turn the approaching 3 torpedoes into an unexpected result

The Swordfish once again played the role of a "shadow killer".

"Captain, the US submarine steers and accelerates, evades torpedoes"

Hua Jianfeng's brows jumped a few times, and only after 5 minutes, the US submarine turned

When the submarine turns, it is necessary to cut the wire connecting the torpedo, and the torpedo enters the autonomous attack mode in advance, and the hit rate is bound to be significantly reduced

"Goal 3 & 4 Acceleration"

"Dog's day, you're not a little daring!" Hua Jianfeng muttered in a low voice, "Heading 95 depth 240 speed 184 torpedo ready to launch"

At this time, the US submarine turned its back to the "Swordfish", and the detection capability of passive sonar was greatly reduced

Encounters turn into pursuits, and there is no longer any suspense (to be continued,)