Scarpa Bay naval base is the anchorage of the Royal Navy's main fleet in the British Isles. It is located in the Orkney Islands north of Scotland. This site is just located in the main point of the German maritime transport line in and out of the North Sea, which has extremely important strategic significance.

There is no doubt that some attractive targets for German submarines often appear in the base. The British main fleet has many battleships in and out of the base, such as the well-known Battlecruiser hood and the battleship Royal Oak.

But just like other impregnable fortresses, Scarpa Bay was heavily guarded, and the British garrisoned a large number of troops here for defense. On shore defense, there are hundreds of large caliber guns, and dense air defense firepower is also arranged.

But at sea, especially for submarine attack. During the first World War, the ub-116 submarine under the command of emsman dived into Scarpa Bay in October 1918, but it sank due to a mine and all its crew members were killed. This operation made all senior British navy officials believe that any attempt to break through Scarpa Bay is absolutely impossible.

But God is a God who doesn't like to boast about human beings, so people who boast and affirm their own ideas have no good end. For example, the unsinkable ships, such as the first Titanic and the first Bismarck, all come to a bad end. The same examples include pearl harbor, which the Americans think is impeccable, and the Maginot line, which the French think is impeccable

In the words of akkado's admonition to dunnitz, commander of submarine forces, any attacker "needs the most bold and strong enterprising spirit, extraordinary courage and superb technology". So the Germans are going to take it by surprise this time. Even if they have to face not only the heavily defended Royal Navy, but also the unpredictable strong current, which is powerful enough to make submarines deviate from the scheduled route and put them in danger.

Akkado and Donitz have been working on a surprise attack secretly. Both of them want to try to get a German submarine into the waters of Scarpa Bay and give the Royal Navy a heavy blow, so that the British will lose their advantage in a few years.

The reason why the head of state attaches so much importance to a tactical attack is not as superficial as Donitz, because akado wants to hide his real killing tactics with a successful attack.

The end of the naval battle off the Dutch coast was confirmed by akkado as early as 1937. Although the German Navy lacked the courage to fight a decisive battle and postponed the victory to the beginning of 1938, akkado had been preparing for the victory for a long time.

One of the backers is how to make people forget this victory. This follow-up plan can be said to be an important step for akkado to disrupt the rise of maritime power of various countries. In fact, there are many fears in akkado's heart, one of which is the fear of the US's production capacity to destroy everything without interference.

If the industry of the United States is allowed to run at full speed, Germany may be able to compete without interference. However, if the blockade of Britain is added, Germany will only return to the old road of defeat.

The geographical advantages of the United States can not be changed, and Germany can not threaten the United States for a while. This is a modest statement to the extreme. In fact, akkado knows not to threaten the United States. He does not even have the strength to look at the east coast of the United States.

On the other hand, once the powerful American industry starts to operate, Germany will have to face the threat of 10 or even 20 American aircraft carriers. Akado doesn't want to point out the right way to develop the navy to the United States so early. He hopes to uncover the mystery as late as possible, so that the U.S. Navy can be caught off guard.

Germany's iron and steel is limited. The war with France and Belgium broke German iron and steel imports. The existing reserves are not enough. Germany is free to develop its own armed forces. Although akado rejected the plan to build battleships and heavy cruisers under the great pressure of the Navy, the steel saved was only enough for him to produce seven aircraft carriers. In other words, if we only use the original resources of the Navy, its present Navy is almost at the end of its development.

Therefore, it is necessary to build a strong navy, a navy that can dominate the Atlantic Ocean, and an elite maritime force with aircraft carrier as the core before the Americans react. In this way, even if the United States enters the terror stage of mass production of aircraft carriers in the later period, it can rely on its accumulated wealth to ensure that the Atlantic defense barrier is safe.

So how can the British and American naval generals not notice the German carrier fleet? How can the battered Royal Navy turn its attention away from the German carrier fleet? Akado decided to create another miracle to cover up his real intention.

How can let a person forget the pain of severed finger? The answer is very simple, that is to find a way to cut off one of his arms! Driven by this idea, akado and Donitz drew up the plan as early as 1937 when they invaded Poland. The purpose of this plan is to divert the attention of the world's navies to the aircraft carrier with a brilliant victory of submarines, and let them turn their attention to the "real secret weapon submarine".

The Intelligence Department of the German Navy has done a lot of preparatory work for this. Through the German air force, some submarines patrolling at sea, the merchant ships passing here before the war, and the spy departments all over the world, it has collected some intelligence information about skapa Bay. On September 11, 1937, before the war with Poland, a modified German Air Force seaplane managed to take some clear pictures of the base; On September 13 of the same year, the u-216 submarine patrolling near Scarpa bay also ventured to approach Scarpa Bay and brought back some valuable reports.

After careful study of the above information, the German Navy submarine command concluded that night attack must be adopted because the water flow on the seabed was relatively slow at that time. The next problem is to determine the person to carry out the attack. Now we all know that this person is prion, who is now directing the submarine in Scarpa Bay. He was really stunned, because there was a huge fleet in front of him that he had never seen in his life. How big is this fleet? There are four aircraft carriers, including the Royal ark, the brave, the glorious and the competitive God. There are as many as five battleships, including the vengeance, the monarchy, the Duke of York, the Queen Elizabeth and the Barram. There are too many other cruisers and destroyers. This may be the largest fleet in human history. If you include the German high seas fleet sunk in the vicinity of operation rainbow, almost half of the warships built by human beings are collected here. Now the problem for prion is not that he can't find the target, but that he has too many targets to decide which one to attack. His submarine can launch six torpedoes at one time, the first four torpedoes and the second two torpedoes. In order to destroy his target, he has to ensure that several torpedoes attack one target at the same time. It was so embarrassing for prion that he looked around on the water and found a perfect attack position. Then, determined to have a good time, he went back to the submarine and came to the front torpedo launch module. There he worried about almost all his crew and began to assign tasks. In order to achieve as many results as possible, he found several ropes and hung them on the ceiling of his submarine. With the help of these ropes, he used the lever principle to make his crew hold the torpedo in front of the torpedo hatch“ In a moment, I will launch three of the four torpedoes in front of me, and then you will immediately load the two torpedoes in the lower position, and then I will fire at the other target again. Then you have about 10 minutes to reload the two torpedo launchers above Prion arranged for his crew. While he said, he explained: "when you load, I will turn the submarine and shoot out the rear torpedo! Then I turned the bow again and attacked the fourth target. After hitting these torpedoes, we would retreat. "“ Is there a problem? " At last he looked up and asked. Dozens of pairs of eyes staring at him, eyes full of no turning back. They knew that in the middle of the attack, the British would come back to them, and the destroyers would soon block the whole harbor, so their chances of escape from the sky would be negligible“ no problem! Captain The torpedo technicians said with a smile, "don't worry! We'll let the British know the strength of our German submarines. " Prion bowed deeply: "you are the best soldiers in the Empire! Never die today! My friends, you are invincible“ The world is invincible All of them cried in a subdued voice. Prion aimed at a huge outline with a weak light. According to the mouth of the ship, it should be a British aircraft carrier. It looks like it has at least 20000 tons. Not far from the aircraft carrier, there is a huge battleship, which is the main reason prion chose to attack here first“ Aim at the target Prion put his eyes close to the sight, focused on his target, and gave the first order gently“ Torpedo ready The torpedo operator replied“ Bow torpedo tubes 1, 3, 4, stand by Prion continued“ 1. Torpedoes 3 and 4! " The torpedo operator followed“ Launch Prion yelled out his first attack order of the day“ Launch The torpedo operator pressed the button to launch the torpedo“ Bang Everyone in the boat heard the sound of the submarine's torpedoes. With the vibration and noise, three torpedoes with bubbles were ejected from the front of the u-211 submarine. In the dark night, they swam fast towards their target.