According to the contract finally signed after many wrestling, Qingdao Shipyard will purchase two Porter-class destroyers in service from the United States at a total price of more than 50 million US dollars, and introduce the corresponding Jishu and some domestic shortage (quantity or quality) machinery and equipment, this price is really not cheap, you must know that a newly built Porter-class destroyer is worth 7.5 million US dollars. In addition, in order to save the limited amount of military purchases, Hu Weidong demanded that the jishu and equipment commonly used in the construction of civilian ships be placed outside the arms procurement, so in fact, Zhongfu International spent much more money for the navy than the published figures (the army and the air force have similar situations, but neither can be compared with the navy). But after the introduction of this jishu is completed, Qingdao shipyard alone can build 2 ships at the same time, if it can recover Shanghai, Dalian, Lushun three shipbuilding bases with large repair docks, this number can at least double, considering the weak foundation of the Chinese Navy, this number is more than enough, otherwise there are too many ships but not enough soldiers and officers, plus the maintenance cost of warships is extremely high, it is purely a waste of the country's precious foreign exchange

Moreover, even if the development of the Chinese Navy is much faster than Hu Weidong expected, this production capacity will still be enough to meet the needs, because the tonnage of Porter-class destroyers is small (Note 1), so the modular shipbuilding that has begun to sprout (the earliest application in history is the German UXXI submarine in the late World War II period) and the so-called "land shipbuilding method" pioneered by later generations of sticks are likely to be put into practical use, and the already fast production speed of destroyers can be accelerated several times.

However, strictly speaking, it is only the speed of final assembly that is accelerated, considering the overall strength of China's industry, so the actual effect of these two methods cannot be as rebellious as that of later generations, but it only takes a maximum of 3 months for a destroyer to be launched from construction to launch (the United States launched a destroyer every 17 days in World War II, but this is the result of the average total production, in terms of a single destroyer). It will take at least half a year. The speed was terrifying enough during World War II. However, it is precisely because of this that Hu Weidong, who was worried about being learned by the two BTs of the United States and the Soviet Union (Note 2), did not immediately put these two methods into practice. Of course, the details of these two methods are not very clear to him, and it will take time for Shiyan to explore, which is also an important reason that cannot be ignored

The comprehensiveness of the Porter-class destroyers is amazing. However, it was not without weaknesses, and the mere two depth charge slots were far from enough for the Chinese Navy to deal with the large number (relative to the strength of the Chinese Navy) Japanese submarine force, and Hu Weidong naturally asked the United States to modify the Porter-class to strengthen its anti-submarine warfare capabilities. After some modifications. The final basic parameters of this destroyer, which China calls the "Xiangtan class", are as follows:

Standard displacement: 2056 tons;

Main scale: total length 116.20 meters, total width 11.28 meters, draft 3.5 meters;

Speed: 37 knots [the application of the bulbous bow is sufficient to offset the negative impact of the increase in load on the maximum speed];

Crew: 360 people [Because of the large number of equipment for air defense and anti-submarine weapons, the number of personnel required has also increased accordingly. 】；

Main guns: 2 single-mounted 152mm high-level dual-purpose guns;

Secondary guns: 2 double-mounted 127mm high-level dual-purpose guns;

Torpedoes: 2 quadruple 533mm torpedo tubes;

Air defense weapons: 4 single-mounted 57mm anti-aircraft guns, 4 twin-mounted 37mm anti-aircraft guns, and 8 twin-mounted 25mm anti-aircraft guns.

Anti-submarine weapons: 2 depth charge throwing slots, 2 rocket depth bomb launchers. 8 depth charge droppers.

By the way, the nomenclature of the ships of the People's Navy of this time and space: capital ships such as aircraft carriers and battleships (if any) are named after the province; Cruisers and escort carriers were named after cities; The destroyer was named after the county; Training ships, supply ships and other auxiliary ships are named after historical people; The rest of the ships are numbered directly by numbers, unless significant merit is recognized. The classification of warships is named after the name of the first ship, and if the first ship only has a numerical number, another name is taken.

Speaking of escort aircraft carriers, this is the core of anti-submarine escort during World War II in history. However, due to the fact that this thing is too attention-grabbing, and it is estimated that the Americans will not help, and the piloting of carrier-based aircraft is also a difficult problem to solve (Note 3), Hu Weidong did not ask Zhongfu International to make a request in this regard. But the difficulty of escorting the aircraft carrier is not great, Hu Weidong as a traverser and naval enthusiast, for this special aircraft carrier also has a deep understanding, can provide a lot of guiding suggestions and opinions, I believe that as long as the conditions are ripe and there is this need, China can build or modify a large number of escort aircraft carriers at any time, in fact, the container ship itself is now mass-produced by Zhongfu International is Hu Weidong with the memory of the escort aircraft carrier pattern changed, On this basis, it is easy to re-convert into an escort aircraft carrier, which is better than the Casablanca-class escort aircraft carrier converted by the United States from the Liberty ship in all aspects

The escort aircraft carrier cannot be bought or built for the time being, so Hu Weidong remembered the frigate, the main type of anti-submarine ship in later generations, although even its predecessor "escort destroyer" has not been launched, but its jishu content is limited, as long as Zhongfu International asks for it. U.S. shipyards can easily design and build in large quantities, and with their humble tonnage, they don't have to worry about being thwarted by the U.S. government, like cruisers.

Note 1: Both modular shipbuilding and land-based shipbuilding have high requirements for heavy machinery such as large cranes, so it is unlikely that ships of more than 10,000 tons will be used in the construction of ships during World War II, but light warships of several thousand tons, especially one or two thousand tons, are still not too difficult.

Note 2: Although the strength of the Soviet Red Navy was not strong at that time, destroyers and even cruisers could still be built, while Germany and Britain had enough industrial power, but resources were a big problem.

Note 3: Carrier-based aircraft have very high requirements for the quality of pilots, while escort aircraft carriers are a kind of cheap special aircraft carriers, mainly playing an auxiliary role, there is undoubtedly a great contradiction between the two, it does not matter to the great powers whose pilot base generally has tens of thousands or even hundreds of thousands of people, but for China, which has almost no amateur pilot reserves and even land-based aircraft pilots need to be trained from scratch, this is an almost unsolvable problem. (To be continued.) )