The only protection of the merchant ship is the four destroyers, the submarines that have been verified have been verified, the decibels are below 110 decibels, almost 90 decibels of the ocean background, and the sonar that has just entered the actual combat use, it is almost impossible to detect them, even if they hear the sound, they will be hidden by the ocean background, and cannot be separated, so the submarine can dive into a fairly close distance, under the premise of such a close range, each has 2 submarines aimed at the destroyer, and the 6 torpedo tubes in front are ready.

All submarines are not hovering, but slight movements, some follow the direction of the ship's sailing, some are reversed, in slow motion, gradually approaching, there are so many torpedo tubes, they will all be launched at one time, so as to maintain the intensity of the attack, fortunately, China's submarine launch tubes are double-engine loading, after the first launch, there is another time, will not waste the opportunity, you know, ordinary torpedo tubes, after the launch, it takes more than half an hour to load, Even if China changes its reloading method, it will not improve much.

In China's application of computers, the biggest benefit is the artillery aiming system, which can raise the aiming of battleships to the height of art, and among submarines, there are also simple aiming systems made of computers, although they cannot be as accurate as artillery, in the water, especially torpedoes are propelled by power and propellers, the deviation and error will be a little larger, but not many, and some accidents are reduced to a minimum.

Now, the closest to the destroyer, the position is no more than 400 meters away from the destroyer, which is probably a distance that Germany could not have imagined before, even if there is no sonar, Germany's most recent torpedo attack is 1200 meters away. Still at night, most of the time, 1.5 km is common, occasionally 2.2 km away also strikes, that is an exception, after all, this era. The range of the torpedo is not long, the speed of more than 30 knots, 2 kilometers, almost 2 minutes, such time, the target of the attack has long been detected and evaded.

China's Flying Fish torpedo has surpassed the mainstream torpedoes in the world, and his speed has reached 65 knots. That is, about 120 kilometers in an hour, according to the distance of 400 meters, at most ten seconds, you can walk the entire attack journey, such an attack intensity, as long as the opponent is not prepared, has been running at high speed and rapid evasion, then the shot is certain. The torpedo has undergone some changes, such as in terms of fluids. The waterline formed is almost nothing, and the sound is very small, as long as it is not fully concentrated, otherwise, by the time the attack is discovered, it will be too late. It is the best sneak attack weapon, which has been proven in a hidden naval battle on the east coast of Africa, and the Qin-class submarine with the Exocet torpedo is enough to kill even a military fleet composed of all warships. Not to mention escorting merchant fleets.

In fact, the Chinese submarine, after approaching to 400 meters, on the premise that the opponent's warships did not find it, has already doomed the result, the opponent's destroyers, to take care of the merchant ships, are sailing at a speed of 10 knots, that is, 18 kilometers per hour, and they only walk about 300 meters per minute, 300 meters, and they cannot escape the attack of torpedoes at all, even if they are aimed in the original direction.

The destroyer is a small boat, easy to turn and extremely fast, but it takes more than 2 minutes for this small boat to accelerate from cruising speed to high-speed movement, and this time becomes the difference and determines the fate of the destroyer. In Deng Jieqian's command platform, one by one radio messages were received, the first group was in place, the second group was in place, the third group and the fourth group all came with positive information, and his remaining four ships were used as reserves, and the distance from the four destroyers was not very far, if the first wave of attacks did not show results, he would immediately come up and help the previous submarines to kill these targets in front of him, it can be said that he was fully prepared.

After contacting each other by radio, and finally confirming that the final preparations were made, Deng Jieqian ordered the attack, almost at the same time as the radio command was issued, they all pressed the torpedo launch button, and each submarine sent out 6 torpedoes, 2 in groups, that is, 12 waterlines, around the entire fleet, 48 torpedoes, very stealthily rushed towards the battleship, there was no sound, there was no large waterline exposed by the torpedo, the electric torpedo would not produce bubbles, and the sound was very small.

The Northwest can make silencing tiles for submarines, reduce the sound of propellers with hydrodynamics, which requires the cooperation of the entire hull, and China has made a breakthrough in professional materials, but for torpedoes, in the Torpedo Research Institute, at the beginning of the research, it was done similarly, but the torpedo with no waterline and sound at all, the speed was reduced to an unacceptable level, only 38 knots, and the threat to the high-speed warship would almost be reduced to the extreme, which was unacceptable, and in the end, the torpedo research chose the extreme, Replace the silent one with the highest speed, which can also reduce the reaction time of the opponent and increase the combat effectiveness.

The sudden sound was heard by the sonar almost immediately, and the decibels of the torpedo, especially considering the high speed, could not have been below 110 decibels, reaching 150 decibels, especially the sound of the propeller, so that the sonar on the destroyer could be heard, and the sonar man picked up the sonar at the same time.

On the 4 destroyers, there is sonar, or the highest technology sonar in the United States, the judgment of the sound is very sensitive, and the responsible personnel are also professional personnel, they made a mistake, they take it for granted that the sound they heard is not a torpedo, because it is too close, it is impossible to think that it is a German submarine that is heard, this is also normal, the sound is more judgmental is vague, the early sonar is like this, under the sound of torpedo propulsion, some do not look like a torpedo at close range, On the contrary, it is like a submarine at a distance.

After the unified action of the Entente against submarines, the German submarines were very far away from the warships, and most of the time the sonarists they were very bored, and now they suddenly found a submarine at close range, first of all, they felt that the opportunity was coming, in any army, there are military merits, and with military merits, whether it is a reward, honor, or even a promotion, this is needed, these sonarists almost invariably, specially spent time listening carefully, because the sound of torpedoes is farther than the propeller of the submarine, on the sonar, It doesn't even show it, it's close at hand, the kind that runs at high speed.

It took almost 10 seconds for the sonar crew to listen, and it was these 10 seconds that buried the last chance, and the four destroyers did not evade anything, and even most of the officers and men on the ship were not aware of the arrival of the torpedoes, and they were still immersed in the peaceful transport.

Of course, the Americans are still well-trained, and the long-term naval tradition allows them to be relatively in place in all aspects, and on the 4 destroyers, there are special lookouts, but unfortunately the trajectory of the flying torpedo is very small, that is, when it is close to the destroyer less than 70 meters, it is seen by the lookout who specializes in staring at the sea, but unfortunately the 65-knot torpedo is close to 120 kilometers per hour, almost 2 kilometers per minute, and the distance of 70 meters is about two seconds, such a short time, whether it is a destroyer, Still, these lookouts couldn't make any reaction, even if they were the ones who reacted quickly, they couldn't make a move, they couldn't even jump into the sea, and they watched the torpedo rush towards the battleship, almost watching the explosion happen.

The flames are soaring, the sound of explosions comes one after another, the Chinese torpedoes, all of which are 533 mm, powerful torpedoes with a charge of more than 150 kilograms, and the speed of 65 knots also brings a huge impact, and the warhead is all armor-piercing, at least the internal explosion of the ship that can penetrate into it, unless it is the armor of the battleship, or the armor that has specially strengthened the underwater protection, it is possible to resist these attacks.

Two submarines stared at a destroyer, a total of 48 torpedoes, these torpedoes can not all hit, after all, at the time of launch, the two submarines cooperate with each other, need to take into account the location, to prevent these destroyers from suddenly accelerating and escaping, in fact, for these less than 2000 tons of small boats, a hit to the vital part, it is enough to kill, even if it does not attack the vital part, it will be heavily damaged.

In fact, in the first wave of 48, a total of 27 hits, of which, 4 destroyers hit a total of 9, and the rest hit the merchant ships that were quite close to the destroyers, because the destroyers were on both sides, and around them were the long merchant fleet, which naturally became targets, without protection, and could only passively resist the targets.

Among the 4 destroyers, only one was lucky to hit 1 torpedo, the most one hit 4, it can be said that it was extremely unlucky, in fact, for them, one is enough, the underwater armor of the destroyer, almost nothing, the torpedo can easily pass through the armor and enter the interior of the cabin, the intensity of the explosion of 150 kg of high explosives is far from being comparable to ordinary torpedoes, accompanied by countless explosions, four destroyers were attacked for the first time, one of them was more unlucky, and it happened to be attacked to a weak position, Three torpedoes hit the middle part, breaking him into two sections, and in the case of the break, the fourth torpedo arrived and attacked him directly to the front half, as a result, the whole ship rolled over the sea like a toy, and finally, it sank very quickly. Several others, all below the waterline, were punched two large holes with a diameter of 3 meters, and the most critical, 150 kilograms of explosives, exploded inside, igniting the fire, destroying the entire power system, and in an instant, the protective force of the entire merchant fleet disappeared. (To be continued.) )