When the warship was just born, for traditional thinking, the power of naval guns was far above the power of land artillery, the scientific and technological indicators were the same, and even the industry and design were the same.

The artillery can't be fixed there, fixed there, what can be affected is only the area covered by the battery, this area, even if the range of the artillery is 20 kilometers, that is, a circle of 20 kilometers, this total area is not small, but compared to the huge national border, as long as you avoid this fortress, other places can be hit casually.

Only by constantly moving, the artillery has great power, and there is a strong deterrent, this is the fundamental reason why the truth is under the range of the cannon, the moving cannon, bringing a strong attack and deterrence, even if it is a plain, others do not dare to come in casually.

At that time, the rise of power could not catch up with the rise of weight, so the bigger the cannon was, the better, but with the development of technology, the weight of the cannon, under the premise of continuous rise, there was a huge pressure on logistics.

About 1 ton of artillery, for no mobile force, relying solely on manpower and horse-pulled, is already very difficult, armed with a large number of heavy artillery troops, very susceptible to the weather, once it is a continuous rainy season, it is easy because of logistical problems, slow movement results.

When armor and other forces do not appear, the movement of artillery on land is a big problem, and when considering the problem of mobility and power, sometimes, the more powerful must be discarded, and if you really get a big guy of 200 mm or even above, the whole army should not revolve around it.

Is it really useless for artillery above 200 mm on land, on land, those huge, incomparably strong fortresses, almost all have such artillery, these fortresses, in the First World War, that is definitely a nightmare existence for the attackers.

The most obvious is the fortress of Liège, even if it is a surprise attack by Germany, whether it is the combat effectiveness of the army or the degree of various weapons, it is higher than that of Belgium, but in front of the fortress of the scorching sun, it is stuck, the reason is very simple, such a fortress equipped with a large number of large-caliber heavy artillery, if you want to conquer it, there is no way to overwhelm it in the face of insufficient number or even overwhelm his heavy artillery.

In fact, in history, it was by relying on 900 mm artillery that the Scorching Sun Fortress was overcome, of course, such artillery, most of the deterrence, just pulled down the Liege Fortress, symbolically came several waves of attacks, in the face of the invincible artillery, in the end, chose to surrender.

If you want to overwhelm the fortress, the caliber must be much larger than the fortress, and at the same time, the firing range needs to be farther, so that it can be suppressed, which is also the sadness of the fortress artillery, to deal with those who are shorter than him, or the existence of no heavy artillery, it is definitely an overwhelming advantage, but once the range is farther than him, the power is greater than him, it is a nightmare, and he can only be beaten passively.

Before there were a large number of motor vehicles, or even armored forces, on land, the advance of artillery was either manned or horse-pulled, so although Napoleon called artillery the king of the army, most of the artillery of that era was three-pounder guns, six-pounder run, even if it was a stronger 12-pounder gun, that was already the limit.

The weight of these guns is relatively light, even if the 12-pounder cannon of the Lun era is used, his weight is several hundred kilograms, even if the wheel is added, it is not more than 1 ton.

A ton of things, for a single person, is a huge, difficult to pull weight, but for the army, not very heavy, special in the middle of the carriage, can pull up 2 tons of things, a ton is only half of this load carriage.

Historically, heavy artillery has developed from its appearance to large-scale development, and then to the Napoleonic period, after hundreds of years of development, and in the Napoleonic era, there was a logistical problem of heavy artillery units, but in the Dinghai Navy, the development was too fast.

At the beginning, whether it was a copper cannon or an iron cannon, hundreds of kilograms, they were easy to handle, whether it was a carriage for the navy or a ship, they could easily pull it up.

However, the foundation of the navy is too deep, the excellent materials, the excellent artillery system, so that the power of the artillery is getting bigger and bigger, the old 105 mm, and the new 105 mm, the power is a world of difference, and the weight is constantly increasing.

Just like the newly installed 105 mm heavy gun of the Navy, including the gun mount, the total weight has reached 2,200 kilograms, that is, 2.2 tons, which has exceeded the bearing capacity of ordinary roads.

The 105 artillery is still like this, to the 155 artillery, the weight is several times higher, reaching as much as five or six tons, with the rapid increase in caliber, the overall weight will also increase significantly, for example, the most caliber, but also the most advanced 400 mm artillery, the weight of the simple artillery itself is as high as about 140 tons, which is almost on land, can not be moved.

For example, the weight of ordinary shells of 105 guns is about 20 kilograms, which is equivalent to 40 pounds, but when it comes to 155, it has reached more than 50 kilograms, and as for 400 mm guns, the general weight is more than one and a half tons.

There are one and a half tons of shells alone, and you can imagine how powerful they are, especially with the use of new propellants, so that they can push the shells of 150 or even 200 mm guns to dozens of kilometers away, and this self-weight is so large that it cannot be attached.

According to the weight of the current 152 mm heavy gun, plus the gun carriage and tires, the overall weight is 7.5 tons, which is lighter than the weight of the mainstream 152 mm guns in later generations, which also shows that the Dinghai Navy is strong in weight control and artillery design, but such artillery is still a nightmare for the current land environment.

Carriages, even if they are from Europe, the strongest heavy horses, it is difficult for them to pull something close to 10 tons, not to mention the war horses of this era, Mongolian horses, in the face of heavy artillery, are dwarfs.

For example, the 152 mm gun is only 7.5 tons as a whole, but when this caliber, from 152 mm to 400 mm, don't look at it, it only increases by one and a half times, but the weight is upside down.

In this case, most of the artillery is loaded on the ship and becomes a naval gun.

For example, the twin 400 mm gun, plus the turret, auxiliary devices, and ammunition reserves, etc., the overall weight is about 1100 tons to 1200 tons, such a weight, on land, there is no way to solve it, but at sea, with the displacement of the dreadnought at the beginning of the 20th century, 16,000 tons, according to the knapsack, the first three and the last two, 10 guns and 5 turrets are equipped with a total of 5,500 tons, which accounts for one-third of the overall ship's weight, which is also relatively in line with the specifications.

It's just that now, there is no way to make a large-scale breakthrough in the steamship, from 50 tons, 100 tons, to the level of tens of thousands of tons, so the battleship, at least, in a short period of time, the probability of appearance is low, then the only option is to choose the solution on land.

400 mm artillery, has been made, there is no way to mothball, it must be made of military use, in land warfare, do not have to consider protection, if it exceeds the range of this artillery, you can not block it with armor, if it does not exceed this range, it is passively beaten, do not have to consider the problem of protection.

That is, to transport this artillery, at least, it is necessary to have a carrier capable of carrying 14 tons.

On land, without large-scale armor or large trucks, the means of transportation that can support about 140 tons of goods can only be based on railways.

Railway armor, which is second only to the navy in land combat weapons, those large-caliber guns of the First World War, except for those used by the navy, most of them were transported by rail, and even the largest caliber, more than 900 mm.

The 140-ton 400-mm gun, after removing some of the armor, on land, what can threaten the armored artillery vehicle, the 400-mm gun, the firing range can reach up to 38 km, and at such a range, nothing can threaten it.

After some weight reduction, the weight of the entire gun was reduced to 120 tons.

Although it is still very large, the weight and length are equivalent to the size of two carriages, and it can be loaded on a train.

It's just a load, strong recoil and power, so that it is impossible to fire directly on the railway, the railway is only responsible for the work of transportation, and then after arriving at the place, it is the power of the artillery itself, and the rapid maneuver on the railway, under the premise of reaching the battlefield, it can be unfolded and fixed with a series of objects to increase the intensity, which can be launched.

You must know that in just a few years, the railway mileage has exceeded 200,000 kilometers, covering almost all of the current Dinghai Navy, and the coverage of the Northern Song Dynasty has also reached more than 50%.

A lot of railways have been built, and similarly, a lot of railway trains have been built, and this task is only to modify the original trains, which is not very difficult.

The first armored train, which has already been made, is a total of 12 cars, two locomotives, which can move forward and backward, they occupy 3 carriages, and the remaining 9 cars, themselves, should be able to accommodate two guns, but in the position, as well as recoil, by the way, under the premise of continuity, in the end, 2 were chosen.

The two cores are artillery, both of which are 400 mm caliber, which can be fired at a position of 270 degrees, which is not considered full coverage, but it is also quite terrifying, with a maximum range of 38 kilometers, and a threatening and accurate range of about 18 kilometers, which is already a very long distance, which almost represents the ultimate in optical aiming.

On the artillery, one step far, step by step, if in the range of the artillery, if there is an advantage of about 3 kilometers, for naval warfare, it is simply crushed, the kite kills the opponent, unless the opponent's ship is faster, otherwise, control the distance, one side can easily hit the other party, the other side, can only be passively beaten.

The project of the armored train was directly taken over by Zhao Xin, after the completion of the huge investment, no one knows what kind of power it is, the army estimates that it is based on the caliber of artillery, which may be higher than 100 mm and 200 mm.

But when I really went to test, I was startled, you know, the original artillery, the original artillery, is also more than 150 mm, but that one only uses nitrocellulose, he is smokeless gunpowder, can ensure smokeless laughter, in terms of power, it is a little unsatisfactory,

However, this 400 mm gun uses the technology of self-tightening of the tube body, the use of metal coating, and there are also huge improvements in the power of gunpowder, all of which increase the power.

Not to mention anything else, the total kinetic energy of the export has increased by 30 times, and the weight of artillery shells has only increased by 4 times, which means that the overall power has increased by about 7 times.

This is still second, the key is that artillery, shells and a series of things are improving, and the overall power has also increased hugely, and now it has reached the train, because of the large weight, the average weight of each carriage, the gravity is about 70 tons, which is the limit that the railway can bear.

With 12 carriages and a total weight of more than 840 tons, it can only be regarded as a very small ship at sea, but on land, it is really a giant.

Because the artillery is too heavy, in terms of power, this power must not only support the armored train, under the impetus of the steam engine, to move quickly, but also to support the deployment after reaching the position.

The Dinghai Navy has adopted a unique design, mainly automation in deployment, plus a transmission device, and replacing manpower with steam power, which will reduce the speed of the artillery deployment from the original 8-10 hours to less than 2 hours, which will also occupy a considerable amount of kinetic energy.

However, the armored train that was finally completed was just the most primitive form, the attack combination formed by 2 guns could be on the railway, at a speed of no more than 100 kilometers per hour, basically in a place where there was a railway, it could be arranged, and at the same time, when it was deployed, there were certain restrictions, it could not be a bridge, or a place like going uphill and downhill, of course, fighting on the inner line of the Dinghai Navy, and even in the future, entering the Northern Song Dynasty, there are huge benefits.

The completion of the armored train, the announcement of the 400 mm artillery project, really from the experimental development, forward, really into the combat sequence, and before this, there is a problem that needs to be solved, that is, to experiment with the power of this armored train, there are some combat matters, such a powerful weapon, of course, must be thoroughly studied clearly, before it can be put into the battlefield.