The rear admiral was none other than Zhang Liangzuo, commander of the submarine brigade who had captured the Japanese Sixth Army Minister Shirakawa Yoshinori alive before, and he was Zhang Ergou, a miner who had followed Wu Xiaoliang as early as the Suidong period, and later changed his name to Zhang Liangzuo, and he had been serving in the navy.

The Suidong Navy also had a glorious time, the Suidong ship in the sea battle off Temple Street silenced the entire Japanese Navy, and later under the pressure of all sides, the Suidong ship that sat and ran aground in the sea off Temple Street was never salvaged out of the sea, and the direction of the Suidong Navy was also transferred to another road far different from the cannon of the giant ship under the careful planning of Wu Xiaoliang, and he once put forward the wolf pack tactics that were still in the embryonic stage in his speech on the day of the official establishment of the Suidong Submarine Brigade.

Wu Xiaoliang knew that Suidong was located in the northeast with scarce resources, with the Soviet Union in the north, the great domestic warlord Zhang Zuolin in the west, and Japan in the east.

So he turned his attention to another tactic that became famous in his previous life, and the power of this tactic lies in the fact that swarms of submarines hide in the vast Pacific Ocean like wolves, threatening the enemy's sea supply lines at any time, especially in an island country like Japan, once the sea supply lines are cut off, or threatened, it will have a very severe impact on its domestic industrial production and the naval 6th army stationed abroad.

Therefore, the large-scale manufacture of relatively low-cost submarines with relatively low hardware technology requirements is almost an excellent plan tailored for Suidong, and later what Wu Xiaoliang did not expect was that he was forced to go abroad in the wilderness, and since then he has been sinking and floating in the commercial sea, which is ten years, and this task of vigorously developing naval submarines was handed over to the then Suidong overseer.

Of course, Wu Xiaoliang has not given full support to the Suidong wolf pack plan for ten years, and he spared no effort from seeking drawings, engineers, and various technical support and financial support, until he took office as chairman of the Shandong Provincial Government, and out of consideration for Shandong's coastal defense, he specially transferred a submarine group to Shandong, and at the same time built a secret military port near Dongying to station these submarines.

At the beginning of the Songhu Campaign, Wu Xiaoliang officially ordered the submarine brigade to go to the Songhu battlefield to wait for an opportunity to attack and harass the Japanese warships, this battle was the first actual combat in the submarine force since its establishment ten years ago, and the first battle was about to shock the world, I believe that after the news came out, the Chinese Navy will inevitably become famous, and they have caught the Japanese Sixth Army Minister is even more unprecedented.

But if you want to live to receive these honors in the future, instead of enjoying the honor after death, you must deal with these troublesome and persistent destroyers overhead, but attacking a destroyer with a submarine is as unreliable as an antelope fighting back against a hunter, and it is still three hunters with guns in their hands.

Zhang Liangzuo did not panic, he had patience, in the previous training subjects they had simulated the situation of being trapped by the enemy ship, the only way was to turn off the fire and sit on the bottom of the sea, wait for the destroyer on the head to lose its target and leave the sea area before leaving.

However, today's objective environment is even worse than the training of the day, the bottom of the river is not as good as the bottom of the sea, only 11 or 2 meters away from sleep, the submarine is still too close to sleep, the probability of being exposed by the Japanese destroyer is still very large, and because it is at the bottom of the estuary, a large amount of sediment has been deposited at the bottom of the river, and it is difficult to say that the sediment will not cause a malfunction if the sediment invades the cracks of the submarine parts for a long time, and if it cannot be started at that time, they will really be trapped and die at the bottom of the river.

But in any case, sitting at the bottom of the river is their only option at the moment.

Suddenly, a rapid and deliberately muffled voice came from inside the microphone.

"Oh no, the Japanese will drop depth charges again."

Everyone's hearts were tight, which showed that the Japanese destroyer had lost patience and began to randomly drop bombs into the water with the mentality of hitting luck, Zhang Liangzuo continued to tilt his head to listen to the movement overhead, and the sound of depth charges entering the water was faintly heard, and after dozens of seconds, the dull explosions sounded one after another, and they got closer and closer.

On the sea, the Japanese destroyers advanced with a full search of nearly 25 knots, and the tail rail frame was full of barreled depth charges, sliding into the water one by one, and the sailors shouted the horn and adjusted the pressure spring between the detonator and the fuse.

"The water depth is set at thirty feet ......"

This depth was as deep as the bottom of the river, and it seemed that the Japanese sailors had begun to suspect that the Chinese submarine was staying at the depth of the bottom of the river to avoid the eventuality, or that there was no certainty of a submarine at all, but a desperate temptation.

The Japanese sailors were a little clumsy to stack the depth charges on the rail frame, pull the wrench, and the barrel-shaped bombs fell into the water along the slide rails, slowly sinking to the bottom of the river.

The sound of the explosion was getting closer and closer, and both Zhang Liangzuo and the ordinary sailors on the submarine were extremely nervous, and they could even feel that the impact of the explosion had shaken the submarine, and what was worse was that the explosion was getting closer and closer, and it seemed to be heading straight for them.

The atmosphere in the submarine command room was tense and suppressed to the point that it was almost exploding, Zhang Liangzuo had always been calm and composed, and at this time he was also holding the iron handrail, and his palms couldn't help but be soaked with sweat, and there was another explosion, and the hull of the boat suddenly shook violently, and several sailors fell to the ground directly when they stood unsteadily.

Zhang Liangzuo judged that the explosion point of the depth charge was less than ten meters away from the hull of the boat, and if it was closer, I am afraid that it would only be fate.

The explosion was already within reach, the wall could no longer withstand such a violent shock, the weld was cracked one after another, the river water squeezed into the interior of the submarine along the gap, the pipeline in the submarine was strictly deformed, the steam leaked out a hissing sound, the river water sprayed down, and the command room was suddenly in a mess.

Zhang Liangzuo couldn't care less about the silence under the water, and rushed to the microphone and shouted: "Close the valve quickly, and each cabin will immediately report the battle damage." ”

Soon, a series of hurried and nervous answers came from the microphone.

"The torpedo compartment is flooded, it can be repaired, it's over."

"The amidship seal cabin is flooded, it can be repaired, it's over."

"Water enters the tail, the width of the crack is more than 20 centimeters, and the water is already waistless...... Fast...... Quick-close sealed hatch ......"

The thunderous sound exploded again, Zhang Liangzuo clearly heard the screeching sound of the hull suddenly deformed, and the river water spraying down was even more like rain, and this explosion undoubtedly made the submarine worse.

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