Suitable for the arrangement of land-based batteries, that is, naval guns, this is a common practice in the field of world fortresses, but Yang Yuanzhao proposed some methods of improvement, unlike battleships, land-based naval guns, can be slightly thicker, a little heavier, and even the barrel can be lengthened, which can increase performance, in the middle of more than 15 inches of artillery, increase the thickness of the barrel, can increase the range, the same is true for the length, perhaps for naval guns, the range is increased by one or two kilometers, which is not obvious, However, for fixed islands, a certain range is drawn in the surrounding sea area, coupled with the assistance of computers, increasing the firing range brings about a decrease in accuracy, which is within a controllable range, but it is an increase of one or two kilometers of firing range, plus the location of its own battery arrangement, it may be 100 meters above sea level, or even higher, and the difference between the plunge attack and the elevation attack allows the naval guns to gain the upper hand under the same specifications.

An artillery, any slight change, will bring about a large change in the overall performance, these are not to say that you can pat your head to decide, but Chinese artillery experts are quite mature, just need to give an order, you can hand over to experts for research, this speed will be quite fast, much higher than the design of a single artillery.

On the choice of caliber of land-based artillery, there is a slight dispute, more than 15-inch caliber artillery, are alternative, each has its own advantages, 15 inches and 16 inches are the most mature, 15 inches are relatively cheap, after several years of production, their process is mature, the price has been reduced to the lowest, suitable for large-scale layout, 16 inches is powerful, as for 17 inches and 18 inches, just laboratory production, not mature.

As early as a few years ago, in the era of fantasy class, China was already able to produce 15-inch naval guns, and after several years of development, it was already possible to mature the industrial production of 16-inch naval guns without an all-in-one machine, and even in the laboratory, 17-inch and 18-inch ones have also been successfully developed, which is super fast from this point of view.

This is not only the help of the all-in-one machine, but also many scientists and artillery experts in China, focusing on the development of artillery science and technology, before the reunification of China, China barely produced 220 mm artillery, or with the help of the all-in-one machine to complete, now it has been made to 18 inches, this intermediate material is the most critical, thanks to the accumulation of a day machine every day, it is a huge number, China in materials science, more than the dynamics of the world, hard power is not other countries in a short time to catch up, this, Other countries have not yet realized it.

Compared with the mature 15 inches and 16 inches, the current 17 inches, 18 inches can only be produced in the laboratory, because, these two materials, just accidents, many times, materials science, are a series of accidents, gradually produce results, these two materials, which one of the 18 inches, its performance is even several times higher than the 17 inches, according to the theoretical data, it can even withstand the strength of the 20-inch gun, but China has no way to complete the design of the 20-inch gun for the time being.

China's naval artillery was developed after absorbing the naval artillery field of Germany and other countries in the world, at that time the largest German was 12 inches, and the British largest was 14 inches, on this basis, China integrated several of the world's most outstanding naval guns, and quickly completed the development of 15-inch and 16-inch guns, from 17 and 18 inches, there is still a certain amount of technical accumulation, 20 inches, it is too far.

Even in later generations, there is no 20-inch artillery, the biggest is probably the 18-inch naval gun of the Yamato, Yang Yuanzhao knows very well that in the future, large-caliber artillery will be gradually eliminated, because even the battleship itself will be eliminated, on the one hand, it is a variety of new naval guns, land weapons, will be reduced to less than 200 mm, no matter how big, it is not easy to move, and the pressure on logistics is also very great, and the sea weapons are basically to this extent, relying more on missiles and aircraft, and the era of naval artillery has fallen behind, However, the difficulty of naval guns above 20 inches is too great, especially for the overall destructive power of the hull and the structure itself, even if you invest energy, it is not possible to study it in a short time.

After focusing on aircraft carriers, China has put more of its goal on airplanes, constantly developing the best aircraft, and further deepening the research on naval guns below 15 inches in terms of conventional weapons for ships, striving to strengthen the power of naval guns on the original basis, but on the other hand, it is also carrying out forward-looking research on missiles, but the progress is quite slow, and in the laboratory, even if it is a semiconductor technology that has been used at present, it will take at least 10 to 15 years for conventional missiles to appear.

The reason why the missile is powerful is because of its precise guidance, in ordinary shells, when the hit rate is below 5%, this is still a salvo of battleships, the missile can basically reach more than 70%, some accurate, satellite-guided missiles, can even reach more than 95%, such a hit accuracy, can give full play to the power of the missile, as for the air-to-air missile, the missile that exceeds the over-the-horizon has become the best weapon, such a missile, for all aspects of the accuracy requirements are very large.

With China's current reserves in the field of power, coupled with Yang Yuanzhao's suggestion, it is not a big problem to come up with a missile similar to the V1, but those things have no meaning at all, and if they are made, it is just like a large artillery battle.

Just like World War II, between Germany and Britain, just separated by an English Channel, the shortest distance of more than 30 kilometers, in later generations, ordinary artillery can hit through, in the era of World War II, but no, the emergence of V1, V2, is considered to solve this problem, but only to hit the other side, in World War II,

From September 6, 1944 to March 27, 1945, Germany launched a total of 3,745 V-2 missiles, of which 1,115 hit the British mainland and 2,050 landed on the European continent in Belgium Antwerp, Brussels, Liège and other places, killing only 2,724 British people and injuring 6,476 people.

There is no way to lower the accuracy of such a hit rate, the range of this error is no longer a few hundred meters, several thousand meters, that is completely tens of kilometers, aiming at the missiles launched by the United Kingdom, can hit the scorching sun, and the intermediate distance is at least close to 100 kilometers, such an attack, like the first US air raid on Tokyo in World War II, only plays a role in harassment, and cannot be used as a conventional weapon.

Rocket research has been going on, and even rocket artillery such a big killer has begun to mature, but unfortunately the missile is really too advanced, it is impossible to take out missiles like V1 and V2, at least there must be a certain guidance technology, but the generation gap between this technology is too far, and it cannot be completed in a short time.

However, Yang Yuanzhao was not discouraged, compared to the world powers that have not yet entered the era of airplanes, and do not even know what missiles and rockets are, China has entered this field in advance, in this sense, China is already a pioneer, one step ahead, as long as it follows this goal, move forward, come up with effective, can be applied to the finished product in the war, I am afraid it is only a matter of time, just like the airplane, China is one step faster, the opponent only has the opportunity to catch up with him, if you want to surpass it depends on luck.

After a certain degree of discussion in the military, aside from the uncertain things of missiles and rockets, the most mature thing in China is 16 inches, and it has been 1 and a half years since it was manufactured, and it has gone through a series of modifications, for example, the 17 inches in the laboratory, 18 inches, the materials can only be synthesized in the all-in-one Zhihong, but the materials obtained from the middle can still be used, such as in the mature alloy of the 16-inch gun, add some substances that increase strength, It can probably increase the strength of the 16-inch gun by more than 20%, and the caliber of the shell is still 16 inches, but both the muzzle velocity and the weight of the shell have increased greatly.

These all represent hard power, the power of artillery shells, is not only a matter of caliber, just like the current Chinese new 155, look at 155 caliber, but the actual power, both range, or power, are much more powerful than 220, is the best infantry firepower.

The 16-inch naval gun is like this, even if it is British and American, under the equipment of the ordinary 16 inches, it will be all over the ground to find teeth, compared to the general 16 inches, in the range, almost one-third increased, under the simple optical ranging and self-meeting system, the accuracy is also extremely high, the most critical all the naval guns, are placed in the high mountains, with the help of natural rock walls, plus a series of arrangements, will make Guam within 25 kilometers, become a forbidden area.

This distance is enough, not every battleship can fire at a distance of 20 kilometers, and the hit rate is high, Britain currently guarantees an accuracy within 10,000 meters, other countries can't even reach it, as long as these batteries are arranged, the entire Guam will be impregnable.

It's a pity that a 500-square-kilometer island, if you want to protect it all, the number of batteries is huge, this is a battery group to resist 8 battleships like the fantasy class, not a simple coastal defense battery, the overall amount of work is very huge, at least there is no year to complete, even in 1 year, it is also preliminary, divided into three phases, after the final completion, at least 3 years later, but as long as it is completed, Guam's protection intensity will be frenzied, even if there is no aircraft, it will become an attacker's nightmare, not to mention having aircraft, 1,000 aircraft is at least the total number of 10 aircraft carriers, plus the performance of land-based aircraft is much higher than that of aircraft carriers, basically Guam can withstand the attack of at least 10 aircraft carrier battle groups when all aspects are complete, and can win in battle. (To be continued.) )