In order to fight against the new warships of the Daheng people, they hope to equip the new battleship with 350 mm naval guns, but they can build the hull and other parts by themselves, and even give them a certain amount of time, they can also toss out this 350 mm caliber main gun.

They had successfully developed a 300-millimeter 25-caliber naval gun on their own, and after introducing a certain amount of technology from the Krull Kingdom, they successfully developed a 300-millimeter and 30-caliber naval gun on their own.

But the problem now is that the 350 mm caliber naval gun is more technically difficult, and it can be done, but it will take a long time, and they don't have much time to wait, so they try to introduce certain technology from the Krull Kingdom to speed up the research and development progress.

The technical problem of naval artillery must be solved as soon as possible, otherwise they can only prepare a second plan, that is, to continue to use 300 mm and 30 times the caliber of naval guns, but to load six main guns in one go.

But without much surprise, the Kingdom of Krull rejected them!

If it is said that the battleships are ordered directly, even if it is a Harold-class battleship, they will sell it to the Orissa, after all, the relationship between the two countries is not bad, especially after the unification of Daheng, the strong and big moves shown in the expansion of the navy have made the Krull Kingdom more and more dissatisfied, and even feel threatened, so they have deliberately begun to support the Olisa people in recent years.

But battleships can be sold, and what about the technology of this naval gun, especially the technology of the top-of-the-line 350 mm caliber naval guns, they are not willing to sell it.

It's not that it's about national defense and security, but if the ship gun technology is sold, then the Olisa Empire will not order warships from them.

At the end of the day, it's about money!

However, the Orissa Empire has also been very hard in recent years, and the finances are very tight, this capital ship is millions of Hengyuan at every turn, and the foreign trade price of a Harold capital ship has even reached 6.5 million Hengyuan, and if you buy two, it will be more than 10 million.

You can't toss it like this if you have money, not to mention that they have been very tight on funds recently.

So in the end, the warship trade was naturally in vain, at this time, the Olisa people also got angry, and they didn't want 350 mm caliber naval guns, so they used their own 300 mm caliber naval guns, although the performance was slightly worse, but Lao Tzu loaded six guns in one go, and the ammunition projection was not bad at all.

At the same time, it is also to increase the upgrading and improvement of its own 300-mm naval guns, hoping to develop a 300-mm naval gun with a longer barrel.

So, not long after, the shipyard of the Orissa Empire started construction of a very special warship for the mainstream warships of contemporary countries, which adopts the design of three twin-mounted turrets on the central axis.

There is a twin turret at the bow and tail and at the amidships, which are arranged along the central axis!

At the same time, in order to strengthen the protection against the '350 mm' naval guns of the Daheng people, they did not hesitate to further reduce the seaworthiness, adopted a closed turret design, and the armor belt was also thicker, and the main armor belt even reached 450 mm steel surface iron armor, which inevitably brought the problem of low freeboard and extremely poor seaworthiness.

However, the power is not bad, reaching sixteen knots, but the endurance is a little worse.

In fact, this kind of six-gun central axis three-twin turret layout, the Daheng Imperial Navy has also tossed before, before the Jingzhou-class battleship was selected, in the three major schemes, two are six main gun design, one of which is the central axis three-seat twin layout, but the selection adopts a high freeboard plus semi-enclosed open turret design, rather than a low freeboard plus closed turret design.

However, at the seminar at that time, the senior admirals of the Daheng Navy thought that this was not worth the loss, because the middle turret was deployed between the chimney or the bridge, and the shooting was greatly affected, and at the same time, the hull would be lengthened, the thickness of the protective armor would be diluted, resulting in a decrease in the overall protection performance, and it would also lead to an increase in the cost of building ships.

The most important thing is that in fact, the rate of fire of the main guns in these years is very slow, even the large-caliber main guns of the navies of various countries have generally adopted the method of hydraulic control, but the re-entry still relies on gravity, and the overall rate of fire is very slow, and the rate of fire of the main guns of 300 mm caliber generally stays at about three minutes.

Even if the Daheng Empire has realized the rate of fire of small and medium-caliber naval guns, the progress of the research and development of the rate of fire of large-caliber naval guns is still very slow, and now the maximum caliber of the Daheng Empire's rate of fire is one hundred and fifty millimeters.

The larger caliber main gun can only achieve a half-rate of fire, that is, the technology of a part of the small-caliber rapid-fire gun is used to the large-caliber naval gun, which solves the problem of repulsion, and at the same time adds spring-assisted re-entry, but the overall rate of fire is still very slow.

In addition to the problems of retrenchment and re-entry, the heavy and difficult loading of ammunition also restricts the increase in the rate of fire of large-caliber naval guns, even with the assistance of mechanical equipment.

What, without mechanical assistance, it is impossible to complete the loading of the main gun with a caliber of more than 300 millimeters by manpower alone, and the propellant of that thing is tens of kilograms larger, and the shells are heavier, reaching hundreds of kilograms.

For example, the three-hundred-millimeter naval guns in the Daheng Imperial Navy, under the standard charge, just the propellant reached seventy-eight kilograms, which is still a smokeless propellant, and if it is replaced with black powder in the early years, it will be more.

The No. 2 armor-piercing bullet and the No. 2 semi-armor-piercing bullet were fired, and the bullets weighed 385 kilograms.

The No. 4 high-explosive bomb weighed 400 kilograms.

Moreover, these propellants and shells are extremely dangerous things, which cannot be stored in the turret on weekdays, but are stored in the ammunition depot under the turret, and the shells need to be transported up and reloaded with the help of a lifter.

It is almost impossible to lift up a 400-kilogram lump of iron and stuff it into the barrel by manpower alone.

Therefore, it must rely on the assistance of mechanical equipment, but the reloading auxiliary equipment in these years is still very rudimentary, so it also affects the reloading speed.

The two major problems of repositioning and loading of large-caliber naval guns have further limited the rate of fire of large-caliber naval guns, and the Daheng Empire was able to increase the rate of fire of the new 300-millimeter naval guns from three minutes to two minutes, which is already a very good progress.

To this end, they improved the gun carriage, and on the basis of gravity re-entry, added hydraulic control and re-entry auxiliary devices, and also designed a complete set of new loading auxiliary equipment for the entire ammunition handling process with the hoisting machine as the core, and even the location and passage of the ammunition depot have been more carefully designed.

In the end, we were able to achieve a rate of fire of one shot in two minutes!

Of course, if the shell is raised into the turret in advance, the crew members will be able to make all the preparations within 60 seconds, and they can fire at any time after completing the load, and the second shot can also be controlled at about 100 seconds, but it will take more than two minutes after that, this is still the theoretical rate of fire, and in actual combat, because the two sides are constantly maneuvering, they also have to measure the range, calculate the shooting yuan, etc., the time will be even slower, and it is normal to only shoot a few shells in half an hour.

This also means that the main gun, while extremely powerful, has a slow rate of fire.

At this time, rapid-fire guns appeared!

Therefore, the Great Heng Imperial Navy is more inclined to choose to increase the number of rapid-fire guns in the choice of increasing the number of main guns and increasing the number of rapid-fire guns.

As a result, it can be seen that the Jingzhou-class battleships are equipped with twelve 150 mm and 40 times the caliber secondary guns in one go.

Moreover, in a demonstration of the Navy half a month ago, it was decided to change the layout of the small-caliber secondary guns and abandon the 55-mm and 45-mm secondary guns.

The Navy felt that the two secondary guns did not form a clear distinction in firepower, overlapped, and that the 55-mm secondary guns were not powerful enough against some small ships of slightly larger tonnage, such as large mine-striking ships.

For this reason, the Navy chose the newly developed 75 mm rapid-fire gun as the main small-caliber secondary gun, which has an extremely fast rate of fire and is also very powerful.

Paired with the 75mm rapid-fire cannon was the 40mm rapid-fire gun, which had a faster rate of fire, even faster than the 20mm cannon used by the Daheng Imperial Navy before, and its power was not weak.

The 75-mm rapid-fire gun and the 40-mm rapid-fire gun are matched with each other to form a small-caliber secondary gun match for the next generation of capital ships.

After the third phase of the naval development plan was finalized and the warship construction plans were also determined, the Daheng Navy entered a new peak of warship construction.

In August of the 7th year of the reign of Qiansheng, the construction of the Jingzhou battleship officially began in the 20,000-ton dock of the Quping Naval Shipyard, which has the most complete facilities and the most powerful technology.

At the same time, a number of cruisers began construction at the Luohai Shipyard and the Jingzhou Shipyard.

In September, the keel of the Fengyang armored cruiser was officially laid in the Jingzhou shipyard, and because of the proximity, Emperor Lin Ziran personally attended the groundbreaking ceremony of the ship.

This also represents Lin Ziran's attention to the construction of the Navy's new generation of warships.

Lin Ziran knew very well that the series of warships that the empire had started construction now were already typical pre-dreadnought-class battleships in the history of the earth.

And this kind of battleship unceremoniously ushered in a new era, and this is true on Earth, and it will be the same on Blue Star.

This is the inevitability of technological development!

Lin Ziran looked forward to the new generation of pre-dreadnought battleships and matching armored cruisers and other warships, which could allow the Daheng Empire's navy to go out of its own coastal waters, go deep into the sea, and go to the seas around the world to protect the overseas interests of the Daheng Empire.

Even though the Great Heng Empire did not have any overseas colonies or overseas enclaves, only a few islands.

However, the Great Heng Empire needs to guarantee the right of passage in the Endless Strait, and it is best to be able to control the Endless Strait in the future.

At the same time, more importantly, with the passage of time, the Daheng Empire, which has a large population, a huge area, rich resources and a developed agriculture, quickly became an important member of international trade after unification.

In the seventh year of Qiansheng, the total international trade volume of the Daheng Empire was already the third in the world, second only to the Krull Kingdom and the Walya Empire.

The total import and export volume of the Daheng Empire in one Chinese New Year's Eve is already a strong announcement to the globe that the rise of the Daheng Empire is proceeding in an unstoppable situation.

However, with the expansion of international trade in the Daheng Empire, especially after the continuous increase in the export volume of industrial products, the Daheng Empire will inevitably encounter international trade barriers!

At this time, the Great Heng Empire needs a strong navy to open up overseas markets and protect its overseas interests!