How can it be anti-submarine in the era when sonar has not yet been done, and there are only underwater hydrophones? This is a historical puzzle, and it can even be said that it is difficult to complete it as a traverser without opening the skill of the golden finger. The First World War was a paradise for submarines, and in history, submarines in World War I could have achieved quite good results even with deck guns. Excluding the factor of scale, the power of German submarine warfare in the First World War was actually more powerful than that of the Second World War!

Without sonar there is no reliable way to locate a submarine hidden under water, (of course, even with sonar, it is very difficult to locate the submarine, after all, there are various terrain and hydrological conditions underwater, and even now, anti-submarine is not an easy task.) So as long as the submarine is submerged, it is generally very difficult to sink. Although there is no way to sink submarines, there are many ways to reduce the losses caused by submarines as much as possible, and the core of anti-submarine warfare in World War 1 should not be on how to destroy submarines, but on how to limit the combat power of submarines.

This is a systematic project, first of all, before the ship leaves the port, it is necessary to make relevant preparations, such as intelligence secrecy, whether it is 1 war or 2 wars, the reason why German submarines can find British and French transport fleets on the vast ocean is largely because the Germans have a relatively complete intelligence network, they will steal the ship's navigation plan and send it to the German Navy headquarters, and the German Navy will use this to contact the submarine in the ocean through the long-wave radio in order to encircle and intercept. Therefore, keeping the ship's navigation plan as secret as possible can effectively reduce the probability of being ambushed by a submarine.

The second is the arrangement of the route, and the endurance of the submarine is actually not long. Especially when sailing underwater, if you can avoid the route where the opponent's submarine is deployed. So even if the submarine has great capabilities, it can't reach it? Compared with World War II, War 1 Britain and France had one of the biggest advantages, even if France was not occupied, it was too difficult for German submarines to come up with a trip, they had to go through the North Sea first, then through the Danish Strait and then into the Atlantic. Therefore, it is necessary to consume a considerable amount of fuel before entering the battlefield.

Of course, the so-called route planning is not only a matter of detours, but also an important issue of coordination between ships and batches. For example, in World War II, the United States made reasonable arrangements and marshalling of transport fleets, which greatly reduced the attack efficiency of submarines. The specific method is simple: before entering the range of German submarine attack, multiple fleets use low speed to save fuel, and then enter the pre-demarcated assembly area, and then after the fleet is in place, form a unified large fleet to find a route under the cover of escort warships. Fast passage through the hunting grounds of German submarines.

The principle is very simple, a very simple probability problem, let's say you have 100 merchant ships traveling 10 routes, and 2 of those 10 routes are divided into German submarines. Then the probability that you will run into a German submarine is even 100%. And if you choose 6 of a kind. Then the probability of encountering a German submarine will be much lower. And if you choose only one path, then the probability of hitting a submarine is only 1 in 5! And because the fleet is concentrated, the escort force will inevitably increase, and even if it does, the probability of survival will increase.

After the issue of routes and confidentiality is solved, another very important and core issue is escort. Unlike countering surface assault ships, anti-submarine warfare ships are not very demanding except for hydroacoustic equipment, and the power almost doesn't matter. As long as you can keep up with the fleet, it doesn't matter if the artillery is almost. THE 75MM GUN IS ACTUALLY ENOUGH. It doesn't matter if the protection is almost there, the artillery battle between the submarine and the destroyer is to find death, and it has little to do with armor protection, as for the torpedo? Well, the gods can't save it.

What destroyers need is quantity! Deploy a large enough cordon around the fleet with a sufficient number of old destroyers to force submarines to dive far away, and make submarines have to go far around if they want to ambush the fleet. As for attacking submarines under water? Don't think about accuracy, by the time of World War II, a destroyer throwing all the depth charges may not be able to get a submarine, so it is necessary to have several destroyers, emphasizing that as many depth charges as possible can be thrown into the water in the shortest possible time in order to achieve a covering attack. So the famous hedgehog cannon in World War 2 was like this, shooting a series of bombs at once, and the fuses were set at different depths to form a three-dimensional death zone. And in real combat, it will be better if several destroyers need to act together.

The so-called escort system does not only refer to the destroyers that accompany the fleet, but also includes a large number of patrol ships cruising in the sea, and their task is to search for opponents in the area where the submarine is likely to appear, not in terms of how many submarines you can sink, but in keeping the submarine from showing its head. It is important to know that even by the time of World War II, the hull design of most submarines was ship-shaped rather than teardrop-shaped in later generations. The fundamental reason is that submarines actually sail on the surface of the sea most of the time, and German submarines can sometimes account for 95% of the total range on the sea during World War 1. To put it bluntly, you will only dive when you attack.

The speed and consumption of the submarine under water are very large, and the search ability has also decreased greatly, so suppressing the submarine under water is equivalent to weakening the range and combat power of the submarine. If you catch up with a submarine that runs out of power and is charging at sea, and is unfortunately discovered by a destroyer, then it is okay to drag it until the oxygen inside the submarine is exhausted and forced to float. In this way, many submarines in the 2 war were consumed alive by destroyers!

In addition, these patrol ships had a very important role in striking the camouflaged supply ships that supplied the Germans with fuel for the submarines. Because of Xu Jie, the Germans have begun to pay attention to the ocean-going supply of submarines, and they plan to use camouflage cruisers to carry out reconnaissance and dismantling operations on the one hand, and to provide fuel and material supplies for submarines on the other hand, and those patrol ships are definitely a strong enemy for these camouflaged cruisers. And Germany's plans to resupply submarines could be dealt a serious blow.

The British actually did not lack ships, the pre-dreadnought era built a large number of various destroyers and cruisers with the progress of the times have fallen behind, they can not play a role in the main duel, but they can play a huge role in anti-submarine and escort operations, and even if you remove part of the artillery above to strengthen the army, it doesn't matter, as long as there are depth charges! If there is a relatively sound escort and coordination system, Xu Jie believes that German submarines will definitely not play the glory they once had.

In war, there are always some key materials or personnel that cannot be lost in the slightest. For example, troop carriers, for example, transport ships that transport some key weapons. For example, during World War II, the British used super cruise ships to transport soldiers, and the Queen Mary cruise ship could transport tens of thousands of soldiers to the other side of the ocean at a time. And there must be no room for error in this kind of action.

The most powerful weapon of these cruise ships is high speed, which is always maintained at an ultra-high speed of more than 25 knots, making it impossible for any submarine to attack. Together with the frigate, they crossed the Atlantic Ocean many times without any accident under extremely secret conditions, and it was proved that high-speed cruise ships are not afraid of submarines at all, not only high-speed cruise ships, but when any ship is traveling at a speed of more than 15 knots, the submarine has no very good way to attack, and if the speed of their own surface cannot keep up, how to track and ambush? It can only be like a big luck to set up an ambush in advance in the place where the other side may pass, and whether or not the results can be achieved may only depend on God's arrangement, and the efficiency of such an action is very low.

Therefore, building a large fleet of fast transport ships is also a good way to deal with submarine warfare, and the cost of increasing speed and fuel is completely less than the loss caused by the sinking of the cargo on the ship. Therefore, if the British government gives some compensation for the construction of "high-speed ships", Xu Jie believes that after the war, the British communication lines will be much safer.

These are all measures that can be done at this stage, and these measures are already quite a challenge for fledgling submarines, but the various events in the world are interconnected, and the British may implement an escort system at the beginning of the war, but at the same time, the Germans may invest more resources in submarines, and of course, there will be an improvement in performance. Xu Jie's fundamental purpose is to make Germany and Britain fight to lose, and the strength of either side is not what Xu Jie wants to see. Therefore, Xu Jie used the increase in Germany's submarine warfare capability as a basis to increase the anti-potential of the British.

In fact, Xu Jie still has a trump card in his hand, that is, air power and anti-submarine, using airships and airplanes to monitor the coastal waters. It is even possible to build a seaplane carrier. This kind of thing was really used by the British in the late World War 1 on Xu Jie's plane, although the bomb load of the aircraft at that time was very small, and the bombing accuracy was almost no different from throwing grenades down with your hands, but it could still force the submarine to stay at the bottom of the sea for a long time, and find out the movement of the enemy submarine. However, Xu Jie clearly does not intend to give advice to the British in this regard.

"In the final analysis, if we want to fundamentally solve the submarine problem, I think advanced underwater acoustic detection equipment is necessary, so for the common interests of the two countries, I hope that the research and sharing of underwater acoustic equipment can be strengthened between the two countries. Hopefully this is the starting point for us to work together again. When the exercise ended, Yang Yonglin said to Jericho after the exercise.

"Technical communication is a must, but I've always believed that if we want to target a weapon, we first need to understand it. According to our technical analysis, the noise of your submarines is smaller than ours, and we want to find out why. Jericho thought for a moment and said.

"It depends on the progress of the cooperation between the two sides." Yang Yonglin said with a smile, in fact, the so-called principle of noise reduction is very simple, at least at present, the Huaxia Navy just adds a shock-absorbing rubber pad to the motor!

Thank you for the reward from the book friend Wangyun Mountain people~~. The second is more ~~~. The three-day double change promised by the side has been realized, and I hope you can support it~~~. (To be continued......)