Sonar buoys have historically appeared in World War II as a technical countermeasure to curb the Germans' increasingly massive submarine superiority, first invented by the British.

Now, Germany has made great progress in electronic technology, and this sonar buoy detection device has also been developed.

For the fleet, the enemy's submarines are a great threat, and the submarine to submarine combat in this era is absolutely nonsense, only surface ships are the main force of anti-submarine, so anti-submarine helicopters appeared in this situation.

As the signal was detected, the captain did not hesitate and immediately ordered to throw the anti-submarine torpedo!

Under the short wing on the left, the T5 electric torpedo left the pylons and, due to the low altitude from the sea, fell into the water almost after being thrown.

To deal with underwater submarines, if you use depth charges, it is quite wasteful, after all, this thing is almost entirely dependent on Mongolia, if it is a surface ship, the number that can be carried is larger, the waste is not terrible, it is a big deal to bomb it several times.

However, the anti-submarine helicopter is not good, after all, it has a limited carrying capacity, although it carries part of the anti-submarine depth bombs, but, whenever possible, it will use the latest torpedoes that it carries.

The T5 electric torpedo is an improvement on the basis of the T3 torpedo, and the biggest change is its seeker, which is the first generation of Germany and the world's first acoustic self-guided torpedo, also codenamed G7ES.

Under water, radar cannot be used, the only thing that can be used is sound, and now, all warships have used sonar as the main means of detecting underwater.

If you put sonar on a torpedo so that the torpedo can automatically find the direction from which the sound is coming from and then attack, wouldn't it be easy to attack?

The idea is simple, but it takes technology to turn it into reality.

Even if it integrated the forces of the whole of Europe and invested in science and technology, Germany developed this first-generation acoustic self-guided torpedo, which initially achieved this goal, and it was only carried by helicopters.

Why?

Because it does not distinguish between friend and foe, although at the time of launch, it is bound with target data, but after launch, due to various reasons the target is lost, when looking for it again, it is likely to attack its own warship as a target, and in history, this kind of torpedo has done this more than once.

And now, with anti-submarine helicopters, there is no fear, the sea area where the helicopter flies out must be at a certain distance from your own warships, for example, now, just outside the maximum range of torpedoes, you don't have to worry about hitting your own warships by mistake, and you can finally use them with confidence.

Compared to the historical T5 torpedo, it has been improved and can be carried out in addition to anti-ship, but also anti-submarine. In fact, the difference between anti-ship and anti-submarine is the problem of setting the depth of the torpedo, and when the acoustic self-guidance technology is adopted, the parameter of the torpedo depth can be removed.

"Poof!" The torpedo splashed down and entered the seawater, and when it entered the seawater, the propeller in the tail began to rotate, and the acoustic self-guidance device in the head accurately captured the submarine at a depth of several tens of meters.

The advantage of the helicopter is its strong maneuverability, as soon as it captures the signal of the target, it begins to maneuver and fly, almost dropping bombs on the back and above the target.

At the same time, the sound of the torpedo falling into the water was also heard by the submarine under water, and at this time, the opponent had just dived to a depth of 100 meters, and then leveled it.

"They're dropping things again, this time louder, probably depth charges." The sonar man said, continuing to listen carefully, and as a result, he actually heard the sound of the propeller turning!

"They still came down with torpedoes!" The sonar officer anxiously shouted: "It's coming to us!" ”

The enemy actually threw torpedoes! And you can be at a depth of 100 meters, can that torpedo get underneath?

When he heard this, Captain Bill immediately frowned, and for him, he was puzzled at this time.

Even the United States does not have self-guided torpedoes now, at most they use the sonar of submarines, and when they do not use periscopes to visually search for targets, they shoot torpedoes according to the data provided by sonar, which is also to hit the surface ships of the other side, and they have never used torpedoes to hit submarines.

Now, the Germans actually have a situation where torpedoes come to hit their own submarines, so how did they set the torpedo parameters? Generally speaking, this is simply impossible!

has gone beyond their common sense.

"Torpedoes are swimming towards us!" The sonar man continued.

Torpedoes are still coming?

"Attention, the engine is stalled, remain silent." Captain Bill shouted loudly, at this moment, he could only speculate.

If there were depth charges coming from above, he would have better get out of this position to avoid being injured by mistake, but now there is a torpedo, and if this torpedo can catch up with his side, it can only rely on sound.

Yes, it's the sound, the opponent's torpedo can hear its own voice and chase after it!

There was no other option, Captain Bill had to give it a try.

The motor in the tail stopped, the propeller stopped agitating the water, and the rattling disappeared. At the same time, all the people on the boat stayed in their positions and did not make any sound.

They are strictly disciplined, and on the submarine, any negligence can put everyone in danger, and now, they are all waiting for the final moment.

The sonar crew was still on high tension, listening to the sound inside the sonar, the torpedo, getting closer, closer and closer.

"It's still moving closer to us." The sonar officer said.

Captain Bill didn't speak, he was also betting.

Now the situation is beyond their common sense, the torpedo actually went a hundred meters below the sea water, and actually wanted to hit their submarine, and now, they have kept silent and can only wait.

At this time, start the motor again to escape? That's stupid, Captain Bill won't change it easily since he has made a decision.

The T-5 torpedo was still moving forward, and at this time, it could no longer hear the sound in front of it and disappeared in an instant, so it could only sail by inertia according to the sound just now.

The torpedo continued to move forward, the sea water was flowing, gently impacting the torpedo, and the trajectory of the torpedo was also slowly deviating from the original trajectory, gradually deviating, deviating, only to see that it almost grazed the hull of the submarine, and crossed with the submarine.

Inside the submarine, everyone's hearts were in their throats, and they could even hear the sound of torpedoes.