It was impossible for the Japanese pilot to know where the submarine was going, but he could roughly guess that the submarine should be headed for the Wyvern, and before the submarine attack of this era, the bow must be aimed at the target, and the natural direction of navigation will also be aimed at the target.

He asked the pilots to take a zigzag route towards the Wyvern to avoid missing the slower submarine. Although the pilot was worried about being shot down by the Wyvern's starboard gunfire, the listener occupied the main position in Makino's anti-submarine division of labor, and he deliberately chose someone with the rank of second lieutenant or lieutenant to do the job, so that he could command the pilots of the lower ranks.

If it weren't for Cheng Dayang's need to hide the tail flame and choose a tricky launch position, he wouldn't have to rush directly towards the flying dragon, all his weapons could be turned, and the attack feasibility area was huge, and he didn't have to approach in a straight line like a real World War II submarine, and then calculate the advance angle according to the position relationship.

All kinds of inconsistencies came together, and this backward seaplane captured the magnetic signal of 419 for the second time. The sonar listener realized that what he heard this time was definitely not a false alarm, because there was indeed something below his predicted course, and he could even tell from the change in the strength of the signal that the submarine was moving away or approaching.

It was almost certain that the submarine below was capable of reaching a speed of more than 20 knots, which was impossible to achieve underwater with batteries, but the listener swept the sea below with the tail searchlight he could control, and could not see anything at all, although he was sure that it was within about 20,000 square meters below, but could not see anything. But now was not the time to guess and ask questions, he followed Makino's procedure, pressed a red button at hand, waited for a few seconds, the light came on, and he pulled down the handle. Through the glass canopy, an insignificant * slip down, splashing a small splash on the surface of the sea.

Inside the 419 command module. The slight sound of entering the water was immediately heard. The sound of a downed pilot falling into the water, followed by the movement of the thrusters turning, is a completely different sound from the propulsion of this era, a sound that has not been seen for a long time.

"Port side, high-speed propellant?"

The sonar soldier shouted, and there was silence in the command module. No one knows what is falling from the sky, maybe it's just one*. Lately, they've been overhearing the *intake of water.

A track began to appear on the tracing table, which was the trajectory of the object's movement as depicted by the continuous acquisition of signals from the broadside sonar, which was in the area later in the submarine, approximately parallel to the 419 course, and then it turned to the other side and seemed to begin to move away from the 419 course. Cheng Dayang and Shu Ping saw something strange at the same time. It did not sail in a straight line, and at the controlled depth, in fact, it did not immediately float, nor did one sink, but maintained the depth very well.

"Is it a self-to* search mode?" Shu Ping said.

"I'll find out soon." Cheng Dayang responded that he did not deny Shu Ping's absurd judgment, in fact, he and Shu Ping's thoughts were the same, "Raise the control baton, increase the power to 80%, double car full speed, left rudder 40, ballast water tank water, 30 ° dive." ”

He issued a series of orders in a row, obviously wandering in the backward battlefield for most of the year, and did not let his business ability become too unfamiliar.

On the tracing table, the * turned back again, accompanied by the screams of periodic active sonar. If it had turned to the left for the first time after it had fallen into the water, it would have been difficult to give Cheng Dayang such time to implement various measures and run some distance, but the Japanese theory of crossing predicted such a complicated situation.

*U-turned, its active sonar could only release sonic pulses in a fairly narrow cone range, almost missing the high-speed evasion of 419, but the secondary reflection formed by the topography of the seabed made the *seeker still grasp the clues and follow it.

The speed of the 419 quickly rose to 22 knots, and at a distance of 2 nautical miles, the speed of the * was about 40 knots, and it followed closely, capturing echoes at 5 times the speed of sound and locating the target.

But the speed of 419 is rising. The boat has never been able to reach speeds above 24 knots since the Shanghai shipyard was restored, but now it has to be fought for. Cheng Dayang gave a high-speed order, but Shu Ping did not object. He needs to quickly reach a speed of around 28 knots with eight success rates in order to dodge if necessary. If the speed does not rise, it will be difficult for the submarine to perform a maneuver strong enough to get rid of the search cone.

Regarding the question of whether 419 has been exposed in this world, it seems that there is no need to discuss, when the enemy got the sound of self-guidance* to set up this game, it is not a question that needs to be investigated at this moment, Cheng Dayang looked at a countdown number on the screen. The number gradually rises from 6 minutes and 20 seconds, which is calculated * and the speed of the submarine, which gives * the time of arrival. Of course, the speed of the submarine cannot be increased all the time, so in the end, the light * will still have the upper hand, and he has a lot of options at the moment, but it is not yet time to play.

The sonar corps could hear far behind the enemy destroyers starting to drop deep water*, and it was really a thing to think about, if 419 was already exposed, and had gotten into the full set, why did their destroyers appear to have nothing to do with the attack?

Unlike the chase in the air and by air, the pursuit of a submarine is a long process, slow enough to allow for several program discussions in the command compartment, incidentally talking about something extraneous.

Cheng Dayang raised his head and looked at Shu Ping, as if he wanted to ask something.

"Remember those seaplanes?" Shu Ping said, "The ones with the altered tail turrets. ”

"Yes."

The exterior of the submarine is filled with sonar screams, which repeatedly sound twice a second, reminding you that it's a lot closer.

"The only thing that could have spotted us and dropped it was those things, which no other aircraft could carry."

"It can't be hanging sonar?"

"Of course not, it's a magnetic detector."

"You didn't say that."

"I was just guessing at the time, of course I can't say it, we have to take into account that 419 has not been degaussed at all for most of the year."

"The most important thing is how to avoid this one*." The commissar interjected. He felt that the two of them were too calm and relaxed, and they were still discussing irrelevant things.

"Report, shielding gamma ray increase, secondary loop pressure alarm."

"Hold the power. Turning on high-frequency bathymetric sonar, I need undersea topography. ”

Cheng Dayang gave the order, and it seemed that after a short period of confusion, it had returned to its former stability, which was a several, and it was obviously not a problem for him to avoid this *.

"Lao Pan, we have to dive deeper, and we can't let the air curtain bomb or * explode for the Japanese planes and ships on the sea to see." He explained the purpose of having to dive deeply.

"Don't let them see it, but they throw this thing down, so they already know we exist?"

"No, I don't think they know yet, or rather, they don't know exactly."

"Yes, I agree." Shu Ping opened his mouth to endorse the captain. He can say this, obviously there is a very good reason, he is not a person who makes a blind statement.

No one in the command cabin spoke, everyone waited for the screaming * to approach, judging from the track map, it had merged with the 419 route, and it was only a matter of time before it caught up, what Cheng Dayang had to do was to lead it to the deep sea and get rid of it there at once.

Active acoustic mapping quickly maps the seabed terrain ahead, and if there is an advanced listening station nearby, the position of 419 can be determined immediately, and if it is not determined that such monitoring does not exist, otherwise Japan's counterattack will not be so disorderly.

*Chased to less than 600 meters. To avoid the search cone range, such a distance is ideal.

"Two rounds of air curtain bombs, fired."

In the small launch tube at the tail of the submarine, two tumbling air curtain bombs blocked the trail* of the trailing channel. After a few moments, their explosion will create a massive barrier that will briefly isolate* the echoes of the active sonar, which is the perfect time for 419 to suddenly turn around and flee the search zone. Cheng Dayang knows the search range of this *, what he needs is not to escape directly*, but to support the speed of enough rudder effect, and now 419 has reached.

The rear air curtain bombs exploded at the same time, and the huge sound wave hit 419 by the time the submarine had already begun to turn, and the time was just right.

Of course, the disadvantage of the air curtain bomb is that 419 itself will also lose its grasp of the * position, whether to get rid of it, you have to wait a while to know, at this time everyone is holding on to a fixed object, feeling the rapid rotation of the floor under their feet.

419 quickly crossed a semicircular track in the sea and headed north, where sonar picked up the self-guided* track, which was still on its original course, apparently missing its target. After waiting for a few seconds, it follows the procedure and it starts to make S-shaped moves, increasing the search range. This time, the active sound wave brushed past the rear of SCP-419, but no reflection was formed, and from the track, it was completely clueless, and then turned to the other side. Everyone on 419 could hear the Doppler effect of sonar in the distance, and they were roughly relieved. If you don't let go of the ocean, he has to command the submarine to get away from here as soon as possible, of course, the extent to which 419 is exposed is also a heavy burden on his heart. After he blamed Lin Xiuxuan for always messing things up, he faced an even bigger danger and almost finished 419.

The Wyvern is still heading north, without changing its course at all, those stupid destroyers are still dropping bombs, no matter how you look at it, it is not a very purposeful hunt, if the Japanese really plan to use an aircraft carrier as a bait, it will not be so disorderly.

* The snake search, which increased fuel consumption, after ten minutes, it lost power and sank to the bottom of the sea, and 419 recorded the last detection of sonar, already 20 nautical miles away.

Without much discussion, the trio agreed to abandon the sneak attack on the Wyvern, even though the tattered aircraft carrier was like meat on a chopping board, right in front of them. And its escort fleet, is flying like headless flies, but at least there is a sinister adversary in the air, who may continue to drop bombs, or see * rise into the air, so ...... I can only let it go.

In the air, seaplanes await the final result. In the textbook written by Makino, it is written: After the launch, it is still necessary to hover at a low altitude and report everything you see.

But nothing happened. For the crew members, the brief excitement was followed by frustration, not only did they not hunt any targets, but they also felt teased. Everyone knows that anti-submarine at night is almost impossible, how can you hastily drop a small * and hit the target, and even the depth of the target, the distance and speed are not known. It would be better to throw down a few deep waters* and come to be more lively, and now I haven't even heard a sound.