Recently, Accardo was so distracted by the loss of paratroopers that he missed the commissioning ceremony of the new equipment of the Navy, but the ceremony was held on time under the auspices of the Deputy Commander-in-Chief of the Navy Raeder and the Commander-in-Chief of the Submarine Force, Dönitz.

In a dock in the German port of Hamburg, 40 of the best submarine officers and men stood in four rows with their hands behind their backs, waiting for the military band on one side to play a solemn war song.

"General Dönitz, can this new type of submarine really change the mode of operation of submarine forces in the case of ocean-going operations, as those designers boasted?" accompanied by the sound of military music, Marshal Raeder leaned slightly and leaned into Dönitz's ear and asked softly.

He wore a black admiral's dress with double-row gold buttons, and he looked very good, after all, under his command, he was a powerful fleet that defeated the world's first navy, and he could be said to be the most successful senior naval commander in the whole of Germany since its birth. Although most of these achievements have nothing to do with him, during his tenure as supreme commander of the Navy, the German Navy achieved terrible results that shocked the world.

It can be said that he is already at the pinnacle of the entire Imperial Navy, and the battleship Marshal Raeder, named after him, can even be said to be the first real battleship in the German Navy since its new construction, and it may also be the last battleship.

Dönitz nodded, he was the supreme commander of the submarine who had seen the test of this new submarine, and even he personally witnessed the whole process of this submarine from birth to development. Because of the improvement and development of materials and technology, this submarine is destined to become the representative of the highest technology of this era, and it is also destined to be forever engraved in the long history of the development of human weapons because of its terrible performance.

"The new power is a new and terrifying system that allows submarines to travel underwater for long periods of time. Dönitz tried his best to explain this German naval superweapon to Raeder in a not-so-secret number: "The birth of this submarine marks the evolution of the submarine weapon into a real submarine from today. ”

"What is a real submarine? Wasn't it a real submarine before?" Raeder paused and became even more confused, he looked at Dönitz, waiting for the other party to give him a more colloquial, more reasonable explanation.

Dönitz then smiled brighter, after all, this weapon was enough for him to formulate more terrifying wolf pack tactics and a more desperate strangulation war system: "Marshal, in the past, the weapon we piloted could only be said to be a diving ship, but now this submarine is simply a submarine that can surface. ”

"What's the difference?" Raeder still didn't understand the difference between the two, but he realized something at once, and before Dönitz could show off his new toy, he asked, "You mean...... The submarine is mainly underwater?"

"Yes, Marshal. Dönitz nodded triumphantly, with a proud expression on his face: "This submarine can dive far, far away, and it can dive for a long, long time." Underwater speed ......"

He lowered his voice, pressed it to Raeder's ear, and whispered a number: "More than 15 knots." ”

"Shhh

The military band was still playing, standing in the center of the crowd, as the most unlucky submarine commander of the German Navy, the submarine commander with the most brilliant results, was standing there, and suddenly saw Admiral Raeder not far away suddenly coughing violently, I don't know what kind of stimulation he was under.

"Ahem!" After coughing, Raeder looked at Dönitz with shocked eyes, and was momentarily speechless by the other party's words. As a commander of a Navy surface ship, Raeder is familiar with the rules of the fleet's anti-submarine operations, and he knows what this speed means for surface ships.

In this era, almost all surface ships are not accurate in the sonar, we only roughly find the location of the submarine, and then use the explosion radius of the mine in the deep sea to make up for the embarrassment of the lack of attack accuracy, and now the speed of the submarine has increased by three times, which means that the approximate position of the submarine can no longer be used as the basis for the attack of the surface ship - the moment you drop the depth charge, the opponent has already left the destruction radius of the depth charge.

Most of the reason why most of the World War II submarines were designed with sharp bows was because the submarines needed to travel on the water most of the time, so they were designed as much as possible to reduce driving resistance and improve the seaworthiness of the submarine. However, this design is obviously not prepared for underwater driving, and the operating power of the battery underwater is really not flattering, so the underwater speed of World War II submarines is maintained at a speed of about 5 knots in most cases.

However, under Accardo's prompting, the fuel cell, a trendy thing that the Germans successfully developed as early as 1927, and after ten years of technical reserves, this new submarine underwater power scheme finally reached the design standard a year ago, meeting Accardo's requirements for stable performance of equipment.

With this new powertrain, Germany's new submarine can travel quietly underwater for more than two days, and even more than four days at a quiet cruising speed. And during this period, there is no need to even expose the ventilation tube to the surface, which makes the submarine truly an underwater god of war, rather than a warship that can dive.

Since the submarine can float and charge at one time and stay underwater for about 3 days, for the sake of submarine safety, most of the driving state of this new submarine will remain underwater, so the sharp bow design style is a bit outdated.

Therefore, the new submarine adopts a more fluid design of the round bow design, coupled with more abundant power, the new submarine can reach a limit speed of 17 knots underwater, which is about three times that of the fastest model of the previous submarine, and such a speed can even support the submarine to pursue a part of the merchant ships underwater, and if conditions permit, it can almost track the enemy fleet underwater.

In order to increase the speed of the submarine to the extreme, and in order to reduce the irregular parts to produce more noise underwater, this submarine has canceled the 88 mm cannon in the bow for the first time, and designed the 40 mm anti-aircraft gun on the control tower to be recyclable and hidden.

Because the size of the battery increases, a larger submarine volume is needed, and because the members cannot be exposed to the surface in most cases, they also need a larger space to reduce the pressure caused by the enclosed space, and from another point of view, the larger volume also means that they can carry more supplies and more ammunition, so the new submarine has a displacement of an astonishing 2400 tons, which is definitely a terrifying underwater monster.

The rounded bow gives the new submarine an added benefit that was previously unattainable: a part of the sonar system can be installed in the submarine's widest coverage angle, so that the submarine can find its target farther and earlier underwater, leaving only the tail of the submarine in the dead end.

If anyone remembers Prien's battle at Scarpa Bay, they will criticize the U-47's ability to temporarily reload, because it could not fire enough torpedoes in one go, so although the German submarines had more chances to achieve a more brilliant record, they could not do it for technical reasons.

Now, this phenomenon was finally solved by the German submarine design technicians, the increased size of the new submarine has the powerful firepower of the six torpedo launch bays in the forward bow, and the more professional torpedo compartment is also equipped with the fashionable gadget of auxiliary loader, in the case of sufficient ammunition, this new submarine can shoot out 18 torpedoes in the torpedo compartment in a standby state in one go, and can fire another salvo after 10 minutes.

When Dönitz transferred Prion from the Spanish coastal port back to Hamburg, Germany, Prion and his men were reluctant, but when the military band left the dock and the engineers pulled open the dock, revealing the new submarine inside, Prion and his men were immediately speechless by the supersubmarine in front of them.

After the engineer had explained the power of the new submarine to Prion and his crew, Prion glanced at General Dönitz standing beside him, and from the other man's eyes he could see what was in his own eyes, and their souls trembled at the birth of this submarine, because the submarine warfare they had devoted their lives to had changed at this moment. And these people will personally witness this earth-shaking change.

"You're not just a battleship killer now, you're the fastest man underwater. Dönitz pointed to the new submarine and said proudly: "Once this kind of submarine begins to form a wolf pack, His Majesty the British Emperor in Iceland will probably starve to death." ”

Prien nodded: "I'll go to sea tomorrow and let him eat vegetarian for a few months before starving him to death!"