1252: C1252 There's More

C1252 There's More

Submarine communications are quite a technical task.

As the seawater was equivalent to a huge conductor, it had a good electromagnetic shielding effect. Thus, submarines that were underwater could not receive any short-wave signals. The common electromagnetic waves in the air, as long as one or two meters into the sea, it would almost disappear.

So, at the beginning, because there was only one way, the radio, the submarine had to take the risk of floating up to receive and send messages, which was quite dangerous. It was just that receiving was still okay. If it were to send a message, as long as it radiated electromagnetic waves... It would immediately attract a large number of anti-submarine generators.

In the later stages of World War II, the Hans's wolf pack tactic was shattered just like that.

In order to solve this problem, there were floating antennas and buoyancy antennas. Even if the antenna was used to the surface of the water, this way, the submarine could also send signals underwater. In fact, there was still the problem of a submarine exposing itself. Because the submarine used short-wave communication at a long distance, the signal itself was not confidential. It could be intercepted by the enemy and the location of the submarine could be detected. Moreover, the floating antenna that was exposed to the water also had the possibility of being detected by the enemy's radar.

Thus, after many years of research, long wave communication had already been confirmed to be the most suitable underwater communication method.

The absorption of electromagnetic waves by seawater was very strong, but the electromagnetic waves of different wavelengths were different. The shorter the wavelength, the higher the frequency, and the more destructive it would be in seawater. However, the electromagnetic waves with longer wavelengths could slightly penetrate the seawater. The longer the wavelength, the stronger the penetrative force of the electromagnetic wave.

The signals sent by the ultra-long and ultra-long waves were able to penetrate dozens of meters to over a hundred meters of water.

However, the antenna required for this kind of communication was huge, and it could easily reach hundreds of kilometers. At the same time, the data transmission speed was also quite slow. Dozens of bytes of newspapers... It also needs to be transmitted for half an hour, so it can only be done during the war. In order to ensure absolute secrecy, it would only be used.

Now that there was a communication satellite, the submarines of Han Country would carry out satellite communications every day, temporarily contacting the base and then diving into the water again.

As long as the anti-submarine didn't fly everywhere and keep searching, it wouldn't be difficult to find this short satellite communication and locate it.

"Report, we received news from the 320 submarines. Behind them, there is a submarine from Bear Country following them." When they returned to the bridge, they heard the report.

Sure enough, the people of Bear Country were following them from the side. Fortunately, they sent out the 320 boats and attracted a Bear Country submarine to follow them. This way, the submarine that they were really preparing to launch the mission would ensure better safety.

"That's right. Let them wander on the sea first. When our launch mission here is completed, we will go and find the Bear Country submarine to take revenge!" General Zhao slammed the table and said.

He had been humiliated by the Bear Country submarine last time. This time, he must take revenge.

The 320 submarine was now at the depth of the ventilation duct, continuing to cruise at a speed of five knots.

"The Bear Country submarines have been following us all this time. These Bear Country submarines are indeed experts in chasing!" Captain Lei listened to the sonar soldier's report and couldn't help but sigh.

The sound-proofing performance of their submarines was very good, and they were sailing at a low speed. The enemy was right behind them, and they were chasing after them from more than 30 nautical miles away. They were simply experts.

In the ocean, the submarines of Bear Country and Y Country often engaged in this kind of silent confrontation underwater. They were very experienced.

Originally, Captain Lei could no longer suppress his excitement and wanted to fight with the submarines behind him in a battle of wits and courage. They had a fierce competition, but now, their experiment had not begun. We can't make any moves, or else we'll lose the other party. It would be disadvantageous to the mission.

"Eh, that's strange. There's even a sound." The sonar said in a low voice. He closed his eyes and listened carefully. He carefully rotated a few buttons on the sonar device. Finally, when he opened his eyes, he had already made a judgment. "Behind the Bear Country submarine, there is another one. Los Angeles class submarine!"

In the mid 1970s, the Los Angeles class nuclear submarine began to gradually enter the state of military service. It quickly updated the underwater forces of the Y Country Navy and became the backbone.

In the ocean, the Los Angeles class nuclear submarine quickly became the main force to fight against the Bear Country submarine. And now, the Bear Country submarine was chasing after them. Unexpectedly, behind them, the Y Country submarine was also chasing after them.

The mantis stalks the cicada, unaware of the oriole behind.

"Continue monitoring." Captain Lei was even more excited. When his superior decided to make a move, what should he do to force all the submarines out of the water?

Well, think about it.

The underwater world was silent. At this time, several hundred nautical miles away from them, Great Wall 200 was also sailing smoothly.

It was currently floating on the surface of the water. The head of the boat split open the water and kept rolling around. On both sides of it, there were two fishing boats accompanying it on both sides.

That's right, the warships in the military port were all the targets of the enemy. There were also submarines watching underwater. Now, after quietly coming out, they met up with the two fishing boats and drove all the way to the predetermined area of the sea... No one noticed.

This large submarine had over two thousand tons of water displacement. It had reached 3,000 tons underwater, the same level as the brigade level. The huge hull was almost 100 meters long, just like a whale. In the voyage, a few crew members were carefully inspecting the deck.

They were wearing a white navy uniform, and behind the navy cap, the black cap band was floating along with the sea breeze.1

The deck of the submarine was not flat, and it was very easy to fall off the streamlined deck. If one fell into the sea, the consequences would be hard to predict. However, no one was afraid, and everyone was carefully inspecting the deck.

"Inspection complete. The Launcher is in good condition." A young man raised his head and shouted loudly. His face was serious, but also full of youth. It was the young man who wrote the will that Qin Guan had met.

He was in charge of the inspection mission.

"Return to the boat." In the command tower, the captain's expression was solemn as he loudly issued an order.

The submarines returned to the submarine one by one. The last young man skillfully shut down the Cabin Cover. This simple action was once overlooked by someone. As a result, the submarine sunk completely the moment it entered the water.

"Report to the superiors. We are ready to launch an experiment at any time." The captain shouted to the political commissar below.

Electric waves flew towards the satellite and then to the fleet. Very quickly, news from all sides was sent. The splash zone was ready and they could start salvage work at any time!

"Prepare to launch. Countdown of three hours!"

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