To fight at such an ultra-long distance, if you want to inflict effective damage on the enemy's capital ships, the demand for the power of naval guns is very large, even if the current 300 mm and 35 times the caliber naval guns are enough, let alone 250 mm 35 times the caliber naval guns or 40 times the caliber naval guns.

The main gun of the new warship will inevitably be a 300-millimeter and 40-caliber naval gun that will be able to be developed next year, and this naval gun adopts an integrated turret, and after smokeless gunpowder, its rate of fire is expected to reach 1.5 rounds per minute, which is much higher than the previous generation's seven-year 300-millimeter 35-caliber naval gun of the initial model of two minutes and the Gaoqing's improved seven-year main gun of the integrated turret.

Among the many large-caliber main guns in the empire at present, only this naval gun can barely meet the needs of ultra-long-distance combat of more than 10,000 meters in the future.

But how many main guns are there?

If you directly get eight doors and ten doors, it is not impossible, but the tonnage will be extremely huge, not to mention 178 or even more than 20,000 tons.

On the one hand, the empire is still short of some experience and heritage in the construction of large-tonnage warships, and at the same time, the current technology of the empire's force system is also slightly lacking, and the speed of 20,000 tons will be very low, and the cost will be very expensive, and it is even possible to exceed 10 million constant yuan.

Moreover, before the breakthrough of unified fire control technology, there was no way to extend the long-distance artillery bombardment, and if the battle was carried out within 10,000 meters, especially within five or six thousand meters, the battleships made in this way seemed to have many main guns, but in fact, because the rapid-fire main guns were far inferior to rapid-fire artillery, the amount of ammunition projected was probably insufficient.

In other words, before the unified fire control is upgraded and modified in the future, the actual effectiveness of the warships equipped with eight or ten main guns at the same time is not as good as that of the Gaoqing or Jinghe.

The future needs to be considered, but the current situation needs to be considered!

Nowadays, the pressure on the Imperial Navy is not small, what is needed is instant combat power, and if it is built, it can exert its maximum combat power!

And not a battleship that will not function until ten or eight years later!

Therefore, after careful consideration, the navy still abandoned the eight-gun and ten-gun schemes, and instead chose the six-gun scheme.

The overall main gun layout of the new battleship adopts the front, middle and rear central axis, and the layout of three twin seats.

Originally, the Navy still wanted to engage in the first two and one rear knapsack turret, but unfortunately the knapsack turret has not been successful, although the design has been, but it is not mature, and the technical risk is too large, so it gave up, and planned to wait for the knapsack turret technology to be perfected before doing it.

At the same time, considering that the nine-year-old 300 mm and 40 times caliber naval guns have adopted an integrated turret, the rate of fire has been increased to 1.5 rounds per minute, which has made up for the embarrassment of the lack of rate of fire of large-caliber main guns above 300 mm in the past.

More importantly, the research and development progress of the upgraded version of the 250-mm naval gun, that is, the 250-mm 40-caliber naval gun, is lagging behind, and it is estimated that it will not be possible to do it next year.

The design of this class of battleships will abandon the 250 mm secondary main gun.

It also doesn't use a two-hundred-millimeter and forty-caliber second-class main gun, which is a bit high or low.

Therefore, he ruthlessly directly adopted the new 10-year 150 mm 45 caliber rapid-fire gun, intending to pile up 12 guns in one go, and increase the number of ammunition projected at medium and close range by increasing the number of secondary guns.

The idea of comprehensive protection is still adopted, and the nickel alloy hardened armor - Luojing armor is planned to be used.

The nickel alloy research group of Imperial College London has completed the improvement of the production process of nickel alloy steel, greatly increased production capacity, and greatly reduced costs.

At the same time, Luohai Iron and Steel Company has also developed a successful gaseous carburizing method.

By tomorrow, the Empire's two major armor suppliers, Jingzhou Iron and Steel Company and Luohai Iron and Steel Company, will be able to provide nickel alloy hardened armor using the gaseous carburizing method, because the armor will be mass-produced by Luohai Iron and Steel Company and Jingzhou Iron and Steel Company at the same time, so this armor is also called Luojing armor.

This means that the nickel alloy hardened armor, which was too expensive to be used in batches before, will barely be able to be used in batches by next year.

The nitle-chromium hardened armor using the gaseous carburizing method, that is, the Luojing armor, is in line with the hardened armor in the minds of the navy, and its protective efficiency is much higher than that of the previous hardened armor.

One hundred and fifty millimeters of Luojing armor can obtain the protective effectiveness equivalent to one hundred and seventy millimeters of Jingzhou armor, if it is Luohai armor, it is one hundred and ninety millimeters, and nickel steel is two hundred and forty millimeters, as for homogeneous ordinary mixed armor is three hundred and eighteen millimeters, and wrought iron is four hundred and six millimeters.

In the past, when the Imperial Navy built Yonglin-class battleships, in order to ensure the protection capability, its wrought iron main armor belt reached more than 400 mm armor belt, which occupied a large amount of tonnage, forcing the battleships to only use key protection.

Now, if Luojing armor is used, only more than 150 mm is enough to achieve the same protection effectiveness, enough to save a lot of tonnage to expand the protection area, or to strengthen firepower and power.

Luo Jing Armor successfully overcame the production capacity and cost of nickel steel to reach mass production, which will further improve the protection effectiveness of Imperial warships.

In terms of power system, it is expected to adopt the new technology of oil-injected coal-fired boilers, which has been tested on a number of ships, in addition to the new construction, but also modified one or two large lightning strike ships, and installed fuel injection equipment, which is now a relatively mature and usable technology.

If nothing else, it will be fully applied to the newly built capital ships next year, and even the old warships can be upgraded to a certain extent, and the fuel injection system will be installed to improve the power.

This battleship design is a typical compromise.

Not only did they want to upgrade their fire control in the era of long-distance engagement of all-heavy artillery warships, but they also wanted to give full play to the performance advantages of rapid-fire guns in the era of long-distance combat of all-heavy artillery warships by upgrading fire control and six large-caliber main guns, and at the same time wanted to control costs and reduce technical risks, so they finally came up with a product that compromised in all aspects.

However, one thing was guaranteed, that is, the speed, for which the Imperial Navy did not hesitate to increase the cost or even reduce the protection, but also to ensure that the ship's speed reached twenty knots, which was also the speed of the full-speed fire gun battleship of the Mirror River.

Twenty knots speed, this is already the speed requirement of the Daheng Empire Navy for a new generation of capital ships, of course, this premise is because the Daheng Empire has a unique hardened armor technology, which can save a lot of tonnage on the armor, so that it can be increased to a speed of twenty knots under the premise of ensuring protection and firepower.

At the same time, it is also so that the ship can still be active on the front line after several years.

The speed of the capital ships in service today is generally eighteen knots, and the armored cruisers are all twenty knots higher, if the new warships want to be able to ensure combat power after upgrading and refit in the future, it is difficult to do without twenty knots.

In order to ensure firepower, protection, and speed, the tonnage of the ship finally made history again, and the standard displacement of the ship is expected to reach 17,000 tons.

This typical transitional product was finally initially named the battleship Luohe, which inherited the name from the original second-class battleship Luohe, which was urgently sold to the Orr Kingdom in the eighth year of the reign of Qiansheng, and was thus removed from the Imperial Navy and vacated the ship's name. After the original second-class battleship Luohe entered the navy of the Orr Kingdom, it was renamed the battleship Kari, and was finally sunk in the Second Battle of Ian.

The construction of the new battleship Luohe was expected to begin in December of the 10th year of the Qiansheng Dynasty.

This is also after the construction of Gaoqing in December of the ninth year of Qiansheng and the construction of Jinghe in January of the tenth year of Qiansheng, the empire once again started construction of large-tonnage capital ships.

At the same time, the appearance of the ship also means that the Gaoqing first-class and second-class mixed main gun plan and the Jinghe full-rapid-fire gun plan have been rejected.

Or rather, these two schemes eventually merged together, and eventually became the Luo Hai's six-main gun scheme.

And if the design concept of this six-main gun battleship is seen to the outside world, it is a bit similar to the six-main gun battleship of the Olisa Imperial Navy and the Kekel Empire, at least the gun layout of the two is the same, and even the main gun and secondary gun layout are similar.

But the design concept of the battleship is completely different, the Orissa Empire and the Keel Empire are engaged in six-gun battleships, purely because the huge power of rapid-fire guns and the efficient protection ability of hardened armor have not yet been discovered, and the design ideas of their battleships are still stuck in the early years, the rate of fire of the main guns is extremely slow, and there are no rapid-fire secondary guns, and they still use key protection.

However, the concept of the Daheng Empire's six-main gun battleship is a fusion of the latest technology in the Daheng Empire, trying to be compatible with medium-range rapid-fire gun engagements and maintaining the modification potential at the same time, so as to cope with future ultra-long-distance engagements, so as not to wait for the full weight of the ship's guns to come out, the battleship will be directly outdated, and even the second-line battle will not be able to participate......

At the same time, the other two main reasons for the Empire's six-gun scheme are that the Imperial Navy has adopted an integrated turret and omnidirectional loading technology, which has greatly increased the rate of fire of large-caliber naval guns, reaching 1.5 rounds per minute, which is faster than the rate of fire of the traditional 150 mm guns per minute.

In addition, the Imperial ammunition technology surpasses the navies of other countries!

The smokeless gunpowder propellant peculiar to the Empire is not available in other countries for the time being.

The combination of these two greatly increases the power of the main gun!

This allowed the Imperial Navy to choose a new battleship scheme with six main guns!

The new warships of the Imperial Navy are expected to use six main guns, and no one knows this news for the time being.

But at this time, the firepower layout of the Gaoqing battleship that has been under construction for more than a year has been leaked, after all, this is just a firepower layout method, there are too many people who know, and it is not a technical detail, and it is not easy to keep it highly secret for more than a year.

The firepower layout of the new generation of battleships of the Great Heng Empire is very strange, in addition to the front and rear twin main guns, there are also four 250 mm guns at the four corners of the amidships.

This kind of firepower layout has not appeared before, and it does not conform to the current mainstream warship design, which makes them very confused!

But ordinary countries are confused, it doesn't mean that the Navy of the Krull Kingdom is also confused about this!

A technical rear admiral of the Navy of the Krull Kingdom, after learning about the peculiar main gun layout of the Great Heng Empire, pondered for a long time, and finally hurried to the Admiralty!