Since it was the United Group that paid for it, many other things had to be changed according to the president's requirements: for example, the 13.2mm anti-aircraft machine guns became 12.7mm United machine guns, and the radio stations on them also became United Telecom products - in 1926, the United Radio Company entered the field of wired telephones in addition to the traditional radio and radio stations, so United Radio became independent from United Electric and became two subsidiaries of United Radio and United Communications, collectively referred to as United Telecommunications, Betty was the only woman in charge of this section and the only woman in the United Group's top executives. But now that she is married, she has matured a lot, and no one has said anything about it.

Originally, the development of Italian Telecom could have been carried out step by step, and in this era only the key government positions and the wealthy could use telephones, but under the strong impetus of Contini, this demand was completely released - he promoted the radio in government offices and schools like the last time, and in addition, the new residences of the United Group, whether it was the new village of the leader or the high-end residential area, were installed with telephones, basically one for each unit.

As a result, Milan, Rome, Genoa and other cities have rapidly increased the number of telephones, from a few hundred to a few thousand, and there is an urgent need to update the equipment, so the carrier telephone technology that appeared in 1918 (4 telephones on a pair of copper wires), and the vertical and horizontal telephone exchange (Swedish invention) that appeared in 1923 began to be introduced into Italy to take root, with the efforts of German and Italian engineers, there will soon be "independent innovation" products.

The second sign is whether there are magnificent, shiny aluminum alloy doors and windows, and the third sign is whether there are professional security guards and service personnel in the community - these value-added contents make the residential prices of United Real Estate higher than other residential areas are still favored by the middle class, and it is said that United Real Estate will soon launch a fourth significant difference: preparing to build a 10-12 storey high-rise building with elevators.

It is precisely because of the investment and innovation of these works that the situation of United Real Estate is very good this year, not only the profits have risen sharply, but also to enhance the market influence of United Finance - most of the housing mortgage loans of these residences are released through the United Bank, which has improved the progress of various industries including glass, water pipes, paints, cables, etc., and so on at the end of the year, United Iron and Steel will be put into production, and a large number of rebar and other construction steel can be produced and sold, and it has been praised by the president for many times, and it is said that there is hope to be rated as a Class A enterprise at the end of the year.

The German mercenary officer corps, including Dönitz and others, had also settled in a place similar to the Leader's New Village, except that the security had become stricter, and their only feeling was that the Italians would enjoy it - but it was quite comfortable to live in.

However, Dönitz was not in the mood to think about whether he would live well or not at the moment, he was attracted by this drawing, and after taking a closer look, he asked: "Are you going to build a large number of such submarines?" ”

"It is impossible to build in large quantities, because the price is expensive, plus the first construction, it is estimated that the cost of a single ship will exceed 3 million US dollars, and even if it is built in batches, it is difficult to be less than 2 million US dollars, unless we find more economical raw materials and equipment manufacturing, it is impossible to replicate in batches - 5 such submarines are equivalent to 1 Caracciolo class, how many of those traditional admirals are willing to spend so much money on submarines?"

This made Dönitz gloomy: not only in Italy, but also in Germany, where the surface fleet sent generals desperately to develop the main warships and did not look at submarines at all.

"But don't worry, we have placed an order for 4 ships, the first batch of 2 ships have started construction in October last year, and the construction of another 2 ships will start in the second half of next year - the United Group is responsible for half of the money, so I have a lot of say, you have a lot of time to verify the use, I have two positions for this submarine: first, he is the head wolf of the region, acting as a command submarine; Second, he is a feed supplement, acting as a cow submarine. ”

"Cows?"

"In the future, there will be a modification of this batch, which will increase the amount of fuel, food, and torpedoes to provide supplies for other small and medium-sized submarines, and will not carry out combat missions themselves - only retain a very weak self-defense capability." Contini smiled, "I know that the German Navy usually uses merchant ships to disguise themselves as supply ships, but this process is full of risks, and it is easy to be discovered by the enemy, especially if it may collide with the freighter of the enemy country or even a neutral country at any time, if the submarine is used to provide supplies, it is not only more concealed but also more flexible and convenient - in an emergency, the submarine officers and men can also achieve partial rotation!" ”

Dönitz excitedly said: "This is a genius idea, I will think carefully about how to use it in the new tactics, which means that our tactics will have more room for manoeuvre!" ”

"Personally, I think that Mr. Bernatis's medium submarine scheme may be more suitable for mass construction, although his current design is a bit oversized because of the ...... caused by the power of the diesel engine."

The submarine has a surface displacement of 1,060 tons and an underwater displacement of almost 1,250 tons, and is armed with two 100mm 47 deck guns, eight 21-inch (533mm) torpedo tubes (bow and bow and four stern) and four 13.2mm anti-aircraft machine guns. The torpedo carrying capacity was 12 (it could be increased to 16 if necessary), in addition to 300 shells and 3000 machine gun rounds.

After Contini's intervention, a more drastic modification was made, the surface displacement was cut from 1,060 to 870 tons, the underwater displacement was 1,040 tons, one of the two deck guns was cut, the machine guns were replaced as usual, and the ammunition carried was reduced accordingly. In making these adjustments, Continy was aiming at Germany's most famous and most built VII-class submarines, but the VII-class submarines have a displacement of only 769 tons, and the addition of this 100-ton displacement allows for better use of the crew's cabins and maintenance system – which Contini believes will help to further enhance combat capabilities.

The power is still a combination of 2 diesel engines + 2 electric motors, with a single output of nearly 1500 horsepower, and the battery pack is divided into 132 units and propelled by two four-bladed propellers.

The design of the submarine is still being further refined, mainly by combining the opinions of two naval experts, and the Italian Admiralty is currently generally considered by the Italian Admiralty to have a superior hull in the hull of the hull, which has a saddle-shaped tank and a high-performance cylindrical pressure-resistant hull supported by a large number of cylindrical steel beams (reinforcement rings), each approximately 500 mm apart, and riveted steel plates (each plate overlapping the adjacent steel plates). The pressure-resistant hull is made of nickel steel and is 18 mm thick at the amidships and 16 mm thick at the ends. It can withstand a maximum pressure of 60 kg/mm². The outer hull is machined from 7 mm thick steel plates, fuel and ballast water are stored between the inner and outer hulls, and the entire pressure-resistant hull is divided into 5 main sections, plus a control room.

Starting from the stern, the first compartment is the aft torpedo compartment (including the electric motor), followed by the engine room, the control room, the officers' and non-commissioned officers' quarters and the first battery compartment, and finally the bow torpedo compartment and the second battery compartment. Above the control room is the conning tower, each watertight chamber can resist the water pressure of 40 atmospheres, and the reinforced watertight chamber can provide better safety, with a design maximum depth of 140 meters.

After Contini intervened, a requirement was added to the design: the main components of the submarine should be transported by rail.

"Rail transport? What does that mean? ”

"The first is the need for combat, and the second is the need for production." "There is no direct waterway between Germany and Italy, and if you want to achieve cross-border dispatch of submarines, you have to detour to the distant North Sea and the Mediterranean, which I think is uneconomical - it is better to transport submarine parts and personnel by rail, it only takes 20 hours by train from Berlin to Rome, and I don't think it will take 10 days to assemble a submarine with complete components - this is more convenient and safer than cross-sea dispatch; As for the second, it's your wolf pack tactics that work in production! ”

"The production and application of wolf pack tactics?" Dönitz was a little confused, "You mean?" ”

"Quite simply, if all the main components can be transported by rail, it means that as long as the final assembly process is by the sea, the rest of the production process can be carried out inland or even underground! After all, there are a few submarines manufactured in seaports, and if every industrial city can manufacture qualified submarine components, wouldn't it mean that the whole country is full of docks and workshops? Not only can it speed up the production pace and improve the efficiency - one is that one factory produces all the components, and the other is that one factory is only responsible for producing 1-2 components, which speed do you think is better? It is also good for concealment and dispersion - in the past, it was enough to destroy submarine production by destroying docks and shipyards, but now it is not possible, it is necessary to destroy the production network covering the whole country, at least the key nodes in it, how easy is it to say? "So I'm very tough, don't always mess with multiple models to add to our own problems, we should try to focus the advantages on one or two models, strengthen the versatility, and simplify the production requirements." ”

"Can the bureaucrats of the Admiralty listen to you?"

"They'll listen." "This submarine now costs $1.5 million ($1926), and mass production can be pressed to $1.20-1.25 million, and if I use my method to strengthen production, national or even cross-border cooperation, the cost may be reduced to $1 million." I told the bureaucrats at the Admiralty that if they wanted to build 200 ships in the future, I would pay half of the money! Isn't it $100 million, I can afford it! ”

"Oh my God, 200!"

"Actually, I want to say 400 ships, but I'm really afraid of scaring them, so I'll shrink it by half first, and the other half to see if I can make enough money." Contini smiled, "I suggest you design a wolf pack tactic on the scale of 300 ships!" ”

"That's fine, of course, but why are you doing that, President? Wouldn't it be better to keep $100 million for your own use? ”

Contini smiled: "You definitely don't like to hear lies, telling the truth seems too obscene, I just want to say: I just passed my 23rd birthday and entered the 24th year, don't you underestimate the ambition of a young man, he is now a president, is he only a president for the rest of his life?" ”

"Oh!" Dönitz slapped his head, "God, I forgot you're only 24 years old!" ”