PS: Thank you for the monthly ticket voted by the book friend "wuwenwang", and ask for a recommendation vote ^_^ again

The so-called rod warhead, that is, the shrapnel produced by its explosion is not a fragment, but a piece of metal rods, which are surrounded by the shell in advance, and after the warhead explodes, the metal rod will fly to the target at high speed, causing a cutting effect on it like a knife blade. For many models with a solid fuselage, the conventional shrapnel killing effect is very poor, and even many aircraft shells are beaten into a sieve but can still stagger and fly back, but after the rod shrapnel hits the aircraft, it does not make small holes, but cuts a series of openings, which has much greater destructive power on the fuselage, and will lead to the disintegration of the aircraft structure at every turn. The smaller the warhead charge, the greater the advantage of the lethality of this new warhead over the conventional warhead, so the 57mm proximity fuze anti-aircraft projectile with the smallest caliber can be said to complement this new warhead

When this new type of warhead was first invented, it was questioned that its shrapnel density was too small (the number of metal rods preset in the rod warhead was less than one-tenth of the number of shrapnel in the conventional warhead), but Hu Weidong insisted on using it in actual combat, and the results proved that even against Japanese aircraft that lacked armor protection and the fuselage was not strong enough, even if it was used for large-caliber anti-aircraft shells such as 120mm, after switching to a rod warhead, the killing efficiency was more advantageous than that of traditional anti-aircraft shells. And if it is used for relatively small-caliber anti-aircraft shells, or against the more robust models of other powers, the effect will naturally only be better. In fact, Hu Weidong let this sharp weapon come out in advance, and the hypothetical enemy was not a devil's plane, but those sturdy models of the two giants of the United States and the Soviet Union, and the Il-2 attack plane, which was known for its solidity during World War II, and the B-17 of the United States, and many other sturdy and durable strategic bombers, once they encountered antiaircraft shells that used rod warheads, the probability of being shot down would increase at least several times, and even if they were damaged, they could still escape back by a very lucky getaway. The structural damage caused by rod shrapnel is also far more troublesome to repair than the small holes made by ordinary shrapnel

Compared with the improvement of long-range air defense capabilities, the two light cruisers after the modification have more powerful close defense capabilities, after the addition of twin 37mm anti-aircraft guns and 7-barreled 25mm "Skynet" close defense guns 4 each. Its powerful and dense close-in fire is enough to pose a huge threat to any country's dive bomber fleet. Of course, if there are too many enemy aircraft, these 8 close fire cannon systems alone will not be able to stop it, but no matter how much the Omaha class is improved, it is only a 7,000-ton light patrol after all. You can't force it to have the air defense capabilities of a large warship, right?

Compared with the light cruisers with a larger tonnage, Roosevelt did not care much about the smaller tonnage ships, because the Yellow Water Navy could not threaten the United States. Therefore, this has naturally become the focus of Zhongfu International's introduction. And many shipyards in the United States in the field of civilian ships for more than a year by Zhongfu International with the assembly line shipbuilding method to the ground, only those who build ships for the United States Navy can still rely on the military's orders to support, now Zhongfu International suddenly threw a large order, they naturally immediately grabbed the head, for the capitalists, profit is more important than anything else, the previous grudges or something is the floating clouds!

And the assembly line shipbuilding method is only one method after all. Zhongfu International can use it, and these shipyards can also use it, because the market was quickly seized, resulting in a large backlog of products, which made the cash flow of these enterprises extremely tight, and at this time, Zhongfu International deliberately lowered the price of the ships built. So that these companies because the profit margin is too low and the delay is not enough, and this time involving a large number of jishu equipment transfer is enough to restore their competitiveness, after the advantages of Zhongfu International is no more, and then want to maintain the status quo of "the scenery is unique", not to mention that Zhongfu International is a foreign enterprise after all, the US government will be more or less partial to the local, which is undoubtedly more unfavorable to Zhongfu International. Fortunately, Mao Zemin realized this in time, and before that, he decisively transferred most of the shipbuilding business except for containers and container ships with patent protection, which not only avoided losses, but also returned a lot of funds

As soon as the US government's supervision was relaxed, Mao Zemin's diplomatic and commercial talents were given the opportunity to give full play, and through his efforts, the US Navy actually agreed to sell the Porter-class destroyers with Shijie's advanced level and transfer a full set of production jishu, which made Hu Weidong, who was thousands of miles away, very happy, and praised Mao Zemin for doing a good job. You must know that the Qingdao shipyard is now basically equipped with the equipment conditions for the production of 2,000-ton warships, as long as the Americans are willing to transfer jishu, the shipyard will soon be able to start mass production, although the destroyer is only a destroyer no matter how strong it is, but there is still an essential difference between being able to produce independently and relying entirely on capture and outsourcing. What's more, the performance of this destroyer is really excellent, and its basic parameters are as follows:

Full load displacement: 2131 tons;

Main scale: total length 116.20 meters, total width 11.28 meters, draft 3.2 meters;

Speed: 37 knots;

Crew: 290 people;

Main guns: 4 double-mounted 127mm high-level dual-purpose guns;

Torpedoes: 2 quadruple 533mm torpedo tubes;

Air defense weapons: 8 40 mm anti-aircraft guns, 6 20 mm anti-aircraft guns.

Anti-submarine weapons: 2 depth charge throwing slots.

Considering that the Porter-class destroyer has a displacement of just over 2,000 tons, her sea, anti-air and anti-submarine capabilities are enough to satisfy Hu Weidong and several major generals of the Navy, and its speed is also amazingly fast, but due to the better performance of the near-fire guns or domestic ones, coupled with the consideration of unified caliber, the 40mm Bofors anti-aircraft guns originally equipped on the ship were replaced with 37mm anti-aircraft guns produced by the border arsenal, and the 20mm anti-aircraft guns were replaced with 25mm anti-aircraft guns. Since such light warships are generally not subject to priority attacks by large enemy fleets, the "Phalanx", which consumes a lot of ammunition, was not chosen, but 8 40-mm anti-aircraft guns were replaced with 4 single 57mm anti-aircraft guns and 4 twin 37mm anti-aircraft guns, and 6 20-mm anti-aircraft guns were replaced by 8 twin 25mm anti-aircraft guns.

However, this has led to too much increase in the load of the warship (the addition of a lot of anti-submarine weapons is also a reason, as detailed below). After the communication between the personnel of the two countries, it was finally decided to replace the two twin 127mm high-level dual-purpose guns in the bow and stern with a single 152mm naval gun to strengthen its attack power on the sea and the opposite shore, after all, the 2000-ton destroyer is also a big ship in China, and it may also have to be sent out to take on heavy responsibilities if necessary. And it is worth mentioning that after the creation of a 152mm caliber high-level dual-purpose gun in the Central Plains and its installation on Porter-class destroyers, its long-range air defense capabilities are no less than those of the original configuration (to be continued). )