After nearly an hour of afloat, the research boat finally surfaced, and the destroyer, which had been waiting for a long time, stretched out its boom and recovered it back to the ship.

Seeing that the blue robot did not follow back, the captain felt a little strange.

After thinking about it for a while, he said to Wei Lingdong:

"Our anti-submarine aircraft have discovered a number of submarines from other countries within 200 nautical miles, do we need to pay attention to them?"

"It's okay, thank you for your hard work." Wei Lingdong smiled and nodded in thanks.

In addition to high-end scientific research boats, there is currently no military submarine in the world that can dive to a depth of 1,000 meters, let alone a position of more than 3,700 meters!

Therefore, Wei Lingdong was not at all worried about what would happen to the zero and Vientiane spirit balls left below. Even if there were a small submarine that could reach that location, with the terrifying attack power of the mutated sperm whale, the boat would be destroyed before they could enter the cave. The deep sea is not as good as the land, and movement is severely restricted.

Even if he couldn't contact Zero during this time, he didn't worry about this problem at all, at most he was worried about some unknown accident in the deep sea.

The words have been put in place, and the captain naturally does not need to worry about it anymore.

After receiving Wei Lingdong's order, the ship and the underwater submarine began to turn around. Because there was still relatively plenty of time, and because he was worried that the lone supply ship and the submarine under the water might be attacked by powerful sea beasts, Wei Lingdong did not let the destroyers and cruisers move at full speed, and the five military ships formed a formation in the sea and returned at a speed of about 30 nautical miles.

About two hours after their group left, a 3,000-ton small military submarine with a pure black appearance and a streamlined hull full of science fiction felt out of a secret submarine base at the northern tip of Okinawa Island and quietly dived into the sea.

This is the latest fourth-generation Kraken-class submarine of the M Army, which requires only three operators but carries six medium-range nuclear warheads with a range of 1,500km. Thanks to the breakthrough of new materials, this type of submarine using double-hull technology can theoretically dive to a depth of about 5,000 meters, and the deep-sea stay time is more than half a year! Many indicators of this small military submarine even surpass most scientific research submarines!

After the accident of the small submarine of the Vietnamese Navy, it is obvious that it is impossible for those who dare to travel alone.

Only more than ten nautical miles, the submarine sailing at a depth of 50 meters was attacked by a large mutant manta ray.

This kite-shaped, black-bellied strange fish is about five meters long and more than six meters wide on its wings.

Under the cover of the protective color of its back, it floated silently from the bottom of the sea, and when it approached the submarine, it suddenly turned around, belly up, revealing its snow-white belly. Then I saw that it quickly pasted to the bottom of the submarine, like a huge wet tissue, firmly attached to the hull! Seconds later, there was a cacophony of metallic grinding in the water—two rows of fangs protruding from the mouth hidden in front of its belly, biting at the smooth hull of the submarine.

On the virtual control panel inside the submarine, the size and position of the manta rays in the belly of the boat are clearly displayed.

"This guy's teeth are pretty sharp!" An observer of the M Army leisurely pointed to the readings of the sensors on the boat and said with a smile, "The adsorption pressure is close to ten tons, and there are teeth comparable to armor-piercing bullets, but unfortunately, the kinetic energy is not enough." ”

The comrade-in-arms next to him smiled and said, "I will definitely enter the maintenance state again when I go back, this treasure is good, but unfortunately it is too delicate." ”

"As long as we don't go below 5,000 meters, this little scratch it causes is nothing." The observer said nonchalantly, "Where is the 5,000-meter trench within 300 nautical miles around here?" ”

"Man, let's try the new feature." His comrades-in-arms looked at him with narrow eyes, their eyebrows twitching again and again, and their faces were full of evil smiles.

"So what are you waiting for!" The observer put his arm around his shoulders, and the two of them pressed a virtual button on the virtual panel with the letters "" written on it.

In an instant, tens of thousands of volts of high-voltage current were released through the two electrodes on the hull of the boat! The huge manta ray shivered violently and broke off from the belly of the submarine, stiffening like a leaf and falling to the bottom of the sea. A hundred meters away, a group of strange fish with green eyes heard the wind and pounced on the falling manta rays.

"Hahahaha!" The two of them laughed and leaned back and shared the video with another comrade in the back of the submarine, "Man, look at this!" ”

Amid laughter, the submarine began to dive slowly towards the target monitored by the military satellite before.

After more than an hour, the observer looked at the topography map of the seabed and said strangely to his comrades, "Do you see that there is something wrong with the terrain here?" The match rate is only 43%, is it the impact of the submarine earthquake in the previous months? ”

"It's not a common thing in troughs, so there's nothing to make a fuss about." The comrade-in-arms patted him on the shoulder, "I'm looking forward to another big guy now, let's get excited!" ”

"Let me see."

The observer turned on the submarine's state-of-the-art active synthetic aperture sonar and began to detect the nearby sea conditions. Invisible sound waves were transmitted at a speed of more than 1,500 meters per second.

"Aha, I saw you turn on active sonar and violate the ban!" The comrade-in-arms pretended to be frightened and took two steps back, "I'm going to report to my superiors, you're done man!" ”

"Okay, my resume is so good anyway, I'm going to change it." The observer teased as he looked at the sonar screen, and after a few seconds, he continued, "You see, there are still more than 1,400 meters from the bottom of the sea, and no threatening targets have been found within 20 nautical miles of the seabed." ”

"I'm kidding, man! I'm kidding! His comrades-in-arms patted him on the back again and again, laughing back and forth.

Suddenly! "Toot ~ Toot ~ Toot ~ Toot ~ Toot!"

The piercing siren sounded in the ears of the two people. The light flashes red.

"What's wrong?!" The GI behind the boat asked loudly in the channel.

"What's that?!"

The observer looked at the sonar screen with wide eyes, and a figure about 35 meters long suddenly appeared on the screen, rushing towards the submarine at a speed far beyond the normal submersible!

"It's too fat, it can't be a submarine!" His comrade-in-arms nervously analyzed, "It's too fast, correct the target image!" ”

The AI program on the boat receives the command, quickly corrects the algorithm, and in the blink of an eye, a new image appears on the top of the desktop.

"This is ... Whale!! 35-meter whale! My God! The observer exclaimed in disbelief, "Was the Vietnamese boat sunk by it?" It must be! ”

7000 meters... 6000 meters... 5000 meters!

The distance between the two is shrinking rapidly!

"Speed 82 knots! 152 kilometers per hour! My God, is this a whale!! His comrades-in-arms were roaring, and the calm look on their faces disappeared without a trace in an instant.

"According to the speed and direction of the target, in the collision course, the relative speed is 193 kilometers per hour, the boat will be seriously damaged, please avoid! Please circumvent! "The submarine intelligent voice sends out continuous reminders.

The observer hurriedly pressed the automatic operation button, the autopilot mode was activated, and the submarine immediately left the rudder to dodge.

When the distance to the target was reduced to about 2,300 meters, the collision warning was finally canceled, the alarm light went out, and the three people on board breathed a sigh of relief.

The observer was still staring at the rapidly approaching giant whale icon on the screen, and he found that the target did not slow down, and more than two minutes later, still maintaining an ultra-high speed of 82 knots!

At their current relative speed, the two will meet in just over forty seconds.

"Can't wait, attack it!" His comrades did not hesitate to press the fish. Thunder launch button.

White line of fish from the front end of the submarine. Mine launcher ejects and a high-explosive fish. After locking onto his target, Ray turned a short sharp right bend and swept diagonally downwards at a speed of 140 km/h!

The people in the boat are staring at the fish. The signal of thunder, the shorter and shorter chime indicates the fish. The distance between Ray and his target was rapidly decreasing, and their hearts were gradually rising to their throats. It's right in the fish. When Ray approaches the 200-meter range of the whale. Suddenly, a missile-shaped object is shot out from the direction of the whale, and the fish that can't dodge it. Thunder slammed together, the fuse was triggered, and there was a loud explosion at the bottom of the sea!

"What's going on? Is that an underwater missile? The two of them were stunned and looked at each other, how could a whale launch a missile?

The one who was hurrying close to this cutting-edge military submarine was the mutated sperm whale that was disturbed by its sonar!

Solve the incoming fish in a supercavitating mine. After the thunder, the sperm whale's giant tail quickly fanned, and at a high speed completely inconsistent with its size, it crashed into the "swarthy monster fish" that made a nasty sound more than a thousand meters away.

Inside the submarine, the piercing collision alarm sounded again, and before the evasive maneuver was completed, the dull crash sound spread through the double hull throughout the submarine, and the violent shaking caused the three of them to fall to the ground. Before they could get up, another crash came, and the three of them slid from side to side!

"High voltage! Activate the high-voltage attack! The observer shouted anxiously.

The outside of the submarine lit up with a strange blue electric light, the giant whale was so electric that it trembled, its huge body was slightly sluggish, its blood-red eyes widened a little, and after swimming around the boat, it came to a position 100 meters away from the boat, and the huge head six or seven meters high was aimed at the left side of the submarine, and then the giant mouth opened suddenly, and a snow-white supercavitating mine passed through the violent compression of its throat, instantly formed, and shot straight at the submarine.

"It's with high-speed fish. Thunder-like ability attacks! "The observer finally understood the fish that had been detonated in advance before coming over. Something happened to Ray.

A loud noise came out of the submarine hull again, and the whole boat was violently shaken in the water, and before they could react, a high-pressure waterspout with a diameter of more than ten meters formed in the middle of the submarine, and the huge rotational force pulled the head and tail of the submarine, making it start to rotate with the direction of the waterspout, and the speed was getting faster and faster!

More than a thousand meters deep in the sea, the giant whale fiercely ravaged this disobedient inferior toy. A series of super-sized ability attacks crumbled the submarine's sturdy hull, and the submarine began to sink uncontrollably. At a depth of more than 2,500 meters, the hull pressure alarm was mixed with other sirens, and it looked so pale and powerless.

As soon as the life-saving buoy was launched, it was sucked into the abdomen by the giant mouth of the sperm whale.

A howl of despair echoed inside the submarine, and the whale slammed the submarine into its destination as if it were playing a collision game.