The winter of 1915 was a nightmare for the entire Allied Powers. In fact, they did not achieve much success in 1915. They were completely suppressed by Germany in the army. In the second half of the year, there was some good news. On the one hand, the capital of China was confiscated and the prosperity of the Chinese made them all full. Although the United States had eaten the largest slice, it had gained a lot for Britain and France. Coupled with the excellent effect of sonar, the entire Allied Powers was optimistic about the war in 1916.

Unfortunately, all this was hit to the bottom of the valley in the winter of 1915. The sea wolves that had been cleaned up almost the same emerged again at the end of 1915, even more fierce than before. Although the sea wolves before were fierce, they were only attacking one or two merchant ships at most. Although they brought huge shadows to the North Atlantic route, the fixed battle loss rate reached 10%, the submarines could hardly compete with the escort fleet. Facing a relatively powerful escort fleet, the submarines generally would not attack, which basically guaranteed safety.

This time the sea wolf is different, and comes in full force. Most of the ships are annihilation battles. Four escorts are like this, eight escorts, and even more than a dozen warships are still like this. That is, now, a large ship is formed, and the escort force is guaranteed to be more than 40 ships, and they are still vigilant at any time and anywhere. If there is any disturbance, deep-water bombs will be thrown into it, which will ensure the safety of the ships.

Such a result is unacceptable to the Allies. Large-scale ships can do it in a short time but not in a long time. They cannot import materials or transport materials until millions of tons. Such timeliness can be reduced at least by more than double, and a large number of rapid forces are restrained to escort, which is not conducive to the overall situation. Destroyers and light patrols are not the main forces in strategic decisive battles, but are important forces in reconnaissance fleets and search fleets, and are also tactical forces in strategic decisive battles. These ships cannot be used endlessly, which is not conducive to the overall strategy.

Before finding the weaknesses of these sea wolves, the Allies would never dare to act rashly. They tried their best to find the weaknesses of these sea wolves. In their opinion, submarines were weapons hidden in the water. Once the water was lost, it would be a disaster for submarines. Just like before, the listener could not find the location of the submarines, which made the two sides intertwined. However, in the sonar era, technology was more reliable than humans, and eventually led to a miracle of naval battles. After losing the hiding place, the record between the submarines and the warships had a miracle. There was almost no place for submarines to live in the entire Atlantic Ocean. The submarines were like a lone wolf far away from human society, slowly licking their wounds. It took a long time to act and risk their lives. Even if the results were achieved, it didn't matter.

It is this example that made the Allies understand that in order to deal with submarines, they first need to find the weaknesses of the submarines. At least they need to discover the submarines. Only when they discover the submarines can they deal with them. Otherwise, they can only rely on quantity. This kind of reliance is not reliable and cannot be implemented for a long time. If you want to treat the symptoms and root causes, you must find the weaknesses of the new submarines.

After knowing the exact facts, the Allied began to search for data. After several attacks on the Allied merchant ships, not every time was an annihilation war. There were survivors, and merchant ships and warships who were lucky enough to escape. They conducted a comprehensive visit to these, from the beginning of the attack, the power of the attack, and to the final result, detailed statistics and investigations were conducted, and finally the basic situation of the sea wolf was generally obtained.

Overall, it is very cruel, exceeding the imagination of all scientists. Sonar is immune. Yes, in the previous attacks, dozens of warships of large and small sizes accumulated, of which the number of sonars is as high as more than 40. There are enough sonars, but with so many sonars, none of them discovered these submarines. This basically means that it is almost difficult for sonars to discover submarines. The moment of attack was discovered in the record, the torpedoes began to be launched. Such suddenness is very strong, and many ships were hit by such sudden attacks.

Not to mention the performance of German torpedoes, even the torpedoes currently mastered by the Allies, as long as they can avoid sonar and launch them at a relatively close range, there are not many ships that can avoid. It is a good idea to say that warships are not possible, but merchant ships are impossible. This is also the fundamental reason why sea wolves can achieve such great power.

In addition to the power of sea wolves, torpedoes are also an important aspect. Before the outbreak of the European war, the Allied did not pay much attention to submarines, but after suffering so much loss among sea wolves, of course, they also began to study submarines and knew that the maximum combat power of submarines was actually placed on torpedoes. For submarines, the greater the power of the torpedo, the greater the power of the submarine itself. This new sea wolves also increased the power of the torpedoes to a higher level, far more powerful than the torpedoes they had before. This new torpedo is quite concealed, with extremely fast speed and almost no waterline. In this case, it creates huge difficulty for avoiding, which is also the fundamental reason why sea wolves can sink a large number of escort warships. Most of the time, the warships did not even react and were sneak attacked by torpedoes.

The research has achieved this effect, which is indeed beyond the expectations of the Allies. At this moment, most of the British power was restrained by the European war. They could not invest a lot of energy in their research. The main force in cracking the sea wolf became the United States. With the support of the United Kingdom, the United States has become the strongest and strong technical foundation in the field of naval technology. In addition, scientists who have surpassed Britain, France and Russia to jointly devote themselves to the field of technical research, they will definitely make great progress. To discover submarines, they still have to rely on sonar, in their top science.

After research, my family felt that these submarines were not immune to sonar, but had a very low sound. Although they had no choice but to figure out why it was so low, there were still solutions: increasing the resolution of sonar, if some background music on the seabed could be removed and the sensitivity of sonar could be increased, submarines could be discovered. The United States began to increase its investment in sonar. In just half a month, at least 12 different universities were built, with a fixed investment of up to 50 million US dollars.

This is a huge research fund, and it will have an immediate effect when investing in any field. Unfortunately, Americans ignore the difficulty of increasing sonar resolution. The performance improvement of this electronic component requires more precise electronic components. It is not possible to improve that high for the time being. Although the resolution decibels are increased from 130 decibels to 120 decibels, the improvement is huge, but it is still not possible to make sounds that are up to 110 decibels and even reach about 100 decibels.

However, the study of torpedoes has increased the resolution of sonar, especially the ability to analyze and track torpedoes. Among the data collected by the Allies, the new torpedoes have no waterline, but can be discovered by sonar. The torpedo cannot reduce the sound. Although the sound of the German torpedoes is quite low, it has been in the detection range. It has achieved a certain degree of increase in sub-projects in this area. Unfortunately, it only increases the reaction time of sonar a little. At about 800 meters, a 65-knot torpedo can take the full range in less than 30 seconds.

For any ship, the reaction time is still a little slower. As long as you are negligent, it is normal to be hit. However, compared with before, you are completely unprepared and you don’t even know where the opponent is, this is much better. Especially the results obtained by American scientists through battlefield analysis, the opponent’s submarine should have been launched several hundred meters away from the battleship recently. At such a close distance, the opponent is too bold. If the sonar can detect torpedoes and determine the opponent’s position, even if it cannot resist, you can fight back. This will prevent the opponent from getting so close and also buy time for avoidance.

After the sonar started hard, a tactic of combining reconnaissance aircraft and airships emerged. Under precise reconnaissance, the airship can bomb more accurately. This bombing is not fixed during the day, at night, under any weather conditions, as long as the airship can take off, it is enough. This has brought huge trouble to the Allies. Millions of tons of military supplies were destroyed, and this loss is almost unacceptable. The most important thing is that there is another new weapon in the war.

A aircraft that is heavier than air, with faster speed, more flexible use and more reliable, a large number of flight enthusiasts were included in the military. After a huge investment, it was only circulated among enthusiasts. It continued to develop aircraft with difficulty. After achieving great development, at least it no longer used automobile engines. Scientists concentrated their efforts and used 100 horsepower or even 150 horsepower engines. The performance of the aircraft was immediately greatly improved.

Of course, these cannot be compared with China. In addition to forward-looking, China also has a power engineer like Yang Yuanzhao. In the field of power, he is definitely a master in this world, and even standing on the shoulders of a master, he is much stronger than ordinary masters.

China has also entered the aircraft era earlier than other countries. It has developed several years earlier and has formed a scale and systematization. The gap between this cannot be made up for time.

The technological upgrade caused by weapons is inevitable. Yang Yuanzhao did not intend to keep it confidential from the reconnaissance aircraft to Europe. As long as this reconnaissance aircraft is exposed to the vision of countries around the world, the reconnaissance aircraft will not be used. Then China must study a new generation of reconnaissance aircraft. In China, there are higher reconnaissance aircraft and its strength is also good. However, in order to meet new challenges, China has proposed a higher-level reconnaissance aircraft research. The research on reconnaissance aircraft continues. Among them, Yang Yuanzhao proposed two directions, which almost represents the main direction of future reconnaissance aircraft. (To be continued.)
Chapter completed!