Although Abbas is not highly educated, he also knows that fighter jets can launch missiles, and destroyers can also launch missiles and torpedoes. But now it's all about not doing anything, it's too annoying. The only way to kill the giant shark is to launch missiles and torpedoes. But the missile was not launched, and Abbas was very angry, so he broke into the cockpit and asked the captain for an explanation.

"Why didn't you shoot missiles to kill the giant shark?" Abbas exclaimed.

Wahid glanced up at Abbas, and for a moment of anger, yelled, "Who let him in?" Blasted me out. ”

Two Chinese characters dragged out with Abbas. However, Abbas had great strength and threw the two men down at once.

"Tell me why don't you launch missiles?"

Captain Wahid had to open his eyes to this reckless man, he had seen it horizontally, but he had never seen such a horizontal one.

"You idiot, the shark is so close to the cruise ship, and if we launch a missile, our cruise ship will also be sunk." Wahid.

"What about luring the sharks away?" Abbas.

"Did you get your head eaten by a dog? If the shark runs away, it will burrow into the water and launch a fart missile, and it won't hit it if it wants to. "Wahid.

"Don't lie to me, I saw on TV that missiles have long eyes, and they can chase things all over the ground, even if they get into holes and water, they can hit them." Abbas.

"My stupid brother, it's called tracking, and objects can only be tracked if they have a signal! But the shark is in the water, who are you tracking? "Wahid.

"So how can you track down the shark?" Abbas, if you don't understand, you have to ask, and once you ask, you have to ask to the end.

Vahid didn't bother to say anything, but he still spoke: "You can put the sonar in the belly of the shark and fire the torpedo." ”

"You give me a sonar, I'll lure the shark away, and then I put the sonar into the shark's belly, and you fire the torpedo." Abbas, with a solemn face, didn't look like he was joking.

Captain Wahid has a knack for reading words and feelings, and guesses that there must be a story in it.

"Why do you have to put the giant shark to death?"

"More than twenty years ago, my father, my grandfather, was killed by this shark, and I must take revenge." Abbas gasped and said, "So I must take revenge and kill the giant shark." ”

"Are you sure you want to do this? It's dangerous, and it's likely to kill you. "Captain Wahid.

"I have already died once, this life is picked up, the Supreme Allah Allah wants to take it back, take it back!" Abbas.

Captain Wahid's face was solemn, thinking that if he couldn't go on like this, the cruise ship would definitely be hit and sunk by sharks. After some consideration, Captain Wahid agreed to Abbas's request.

"Can you tell me your name?" Wahid.

"Abbas, Poseidon." Abbas.

"Abbas, you are a worthy sailor, and I wish you a triumphant return." Wahid.

……

There are a lot of sonar detectors on cruise ships, and the technology is so advanced that they have developed into miniature ones. Captain Wahid found Abbas a wireless sonar fish finder, a device commonly used in scientific research.

Before Abbas could lure the shark away, Captain Wahid spoke to the destroyer's captain and told him about the ship's current situation and the torpedo fired by tracking sonar.

Today's torpedoes, that skill is really not covered, not only can go straight, even the "S" shape can walk, as if it has a pair of electronic eyes, to identify a target, to give up, as long as the thruster provides enough horsepower.

A torpedo is not a person, so how can it be targeted?

That's where sonar tracking comes in. Sonar emits sound waves, which are different from electromagnetic waves and have their unique advantages, but in water, the principle of the transmitter is fundamentally different.

Electromagnetic waves decay too quickly in water, and the shorter the wavelength, the greater the loss, even if high-power low-frequency electromagnetic waves are used, they can only propagate a few tens of meters. Sound waves are different, the propagation in the water is much less attenuated, a bomb of several kilograms explodes in a deep-sea tunnel, a signal can be received at a distance of 20,000 kilometers, and low-frequency sound waves can also penetrate the formation of several thousand meters under the sea, and obtain information in the formation. There is still no more effective means of measuring and observing in water than sound waves.

Generally, fish experts want to study the activity of fish, such as sharks and whales, as long as they install a sonar tracker on it, even if they run to the South Pole, they can find their whereabouts.

There are two types of sonar techniques: active sonar and passive sonar. Active sonar emits ultrasonic waves and then collects echoes for calculations and is suitable for detecting icebergs, reefs, shipwrecks, sea depths, fish, mines, and hidden submarines with engines turned off. Passive sonar technology is to passively receive the radiated noise generated by the target in the water and the signal emitted by the underwater acoustic equipment to determine the direction of the target.

The tracking sonar torpedo uses passive sonar technology, receiving the signal, then tracking the signal, determining the direction, and then chasing the past, which can automatically avoid the shelter.

Once the idea is made, it must be implemented. Captain Wahid tuned the mini-sonar to a specific firing frequency and handed it to Abbas. Similarly, Captain Wahid agreed with Captain Salaha to put the torpedo in place first, and launch it as soon as Abbas lured the shark away.

The giant shark slammed into the side of the cruise ship, and it didn't hurt at all. One side of the ship's wall has been smashed to pieces, and the torn iron sheet is particularly eye-catching. Fortunately, there are anti-sinking compartments in the bottom compartment of the cruise ship, and it doesn't matter if one or two or three compartments are flooded, as long as the sealed door is closed.

Abbas descended the gangway on the other side, just in time for a motorboat parked underneath.

The sonar system was turned on, the destroyer's torpedoes were already in place, just waiting for Abbas to lure the giant shark away before putting the sonar on the shark.

It's not so easy to put sonar on a shark, and Abbas has the idea of throwing sonar into the shark's mouth.

The mouth of the giant shark is so big, it shouldn't be difficult to throw it in. The difficult thing is how to get out of danger after the sonar is thrown in.

Although Abbas is not afraid of death, he still has a wife and children at home, and his mother is over 70 years old, and she needs to take care of herself. If he goes like this, the well-off life in his family will definitely return to the pre-liberation period all of a sudden.

Abbas first jumped into the water, swam a few meters towards the motorboat, and flipped over.

There was a roar, and the jet ski ran away. The iron-clad Abbas circled to the other side of the cruise ship and screamed a hundred meters from the giant shark.

The second egg, who was watching from a distance, was stunned for a moment, wondering if Abbas had a funny head, and had just escaped from the shark's mouth, why did he run down again? It's not like this way to die!

Erdan couldn't figure it out, so he continued to read, but the motorboat had already started, like a cheetah ready to go.