After returning from the Quping Naval Base, about five days later, Guo Dongyan received the Navy's first training report on the battleship Ning Yu.

According to the training report, the secret sea training conducted by the Ning Yu this time was normal, and the performance data of the warship in all aspects were comparable to the several sea trials conducted after its completion.

For the first time, ultra-long-distance live-fire training was carried out, and intensive tests were carried out at distances between 10,000 and 14,000 meters, followed by live-fire tests on targets at a distance of 15,000 meters.

Although the 15,000-kilometer test was not successful in the first live-fire test, and the successive rounds of firing failed to get a hit, this was not a design problem, but a limitation of the performance of optical aiming and ranging, calculation, etc., which were integrated into the unified fire control system.

In order to carry out ultra-long-distance shelling, the requirements for the subsystems in the unified fire control system are very high, especially for the accuracy of optical rangefinders and other equipment.

However, this sub-component can be continuously upgraded and improved in the future.

In fact, at the beginning of the design, the battleship Ningyu took into account ultra-long-distance shelling, and specially increased the elevation angle of the main gun, and its maximum range could reach 18,000 meters.

However, how to give full play to this maximum range of 18,000 meters still needs to be continued in the follow-up efforts.

In addition to the live-fire test, all other aspects of the performance data have met the predetermined requirements, of course, some problems have also been exposed, such as when sailing at high speed, the jitter of the battleship will be relatively large.

This is due to a defect in the powertrain.

Because of the concept of comprehensive protection, the weight of the armor on the battleship Ningyu is very large, and at the same time, in order to ensure the level of protection and control the cost, the square coefficient of the battleship is also relatively low, and the construction is relatively short and thick, which leads to not much space and displacement can be used to place the power system.

However, in order to ensure the speed of 20 knots, a huge amount of things are needed, so the steam engine system on the Ning Yu is squeezed to the limit, which also leads to the problem of shaking when the battleship is sailing at high speed, which in turn affects the accuracy of long-distance shelling.

In fact, this problem has been known several times before it was put into service, and the battleship Ningyu was built, and before it was officially put into service, it had actually been secretly tested by the Navy many times, but at that time it was the performance of the battleship itself.

That's when the jitter problem was discovered.

But a bunch of engineers in the empire are also helpless about this, this is not only a matter of speed, in fact, the newly built ships in the Great Heng Empire are faster than battleships.

The battle cruisers have twenty-three knots, and the heavy cruisers have twenty-six knots, which is much faster than the Ning Yu battleship, but these battleships do not have jitter problems, because they have more available space and a larger square coefficient.

If you want to maintain the defense capability of a battleship and want to have a high speed, and at the same time avoid this jitter problem, then you have to use more advanced power systems, such as steam turbines, which are still under development, which are greatly reduced in size and weight, and have more power.

Generally speaking, the first formal training of the Navy after the Ningyu was put into service has allowed the Navy to verify many problems, and at the same time, many problems have been exposed, and these will have great positive significance for the subsequent development of the Daheng Imperial Navy.

The battleship Ning Yu was officially put into service, and it was already the time to start secret training, and Lin Ziran was also worried that other countries would find out the secret of the battleship Ning Yu.

After all, the appearance of the battleship Ning Yu is so special, you can see the ten main guns on it at a glance.

This is a completely different firepower layout from the battleships of other countries today, once this special firepower layout is discovered, the navy leaders of other countries are not stupid, they will definitely analyze, to study, and in the end they will be able to analyze it with a high probability, the ten large-caliber main guns on the battleship Ning Yu are born for long-distance artillery battles, and then they may deduce more technical details, such as the key secret of unified fire control.

After all, unified fire control is actually not a new thing, but the Kyle Imperial Navy tried to unify fire control on battleships seven or eight years ago to improve the hit rate of the main gun, but at that time, it was limited by communication technology, optical instruments and mechanical calculations and other equipment were not up to standard, so what came out was only a manual version of unified fire control, and this kind of artificial unified fire control was actually meaningless.

However, even this means that the concept of unified fire control has appeared in other countries, but they have not yet found a way to effectively use it and give full play to unified fire control.

In addition, although a series of new technologies adopted on the battleship Ningyu are all top-notch, they are not insurmountable for the three traditional industrial powers of Krull, Valia, and Keil, and even many of them have them.

For example, the naval gun system, the 300 mm and 45 times caliber main gun technology on the Ning Yu is top-notch, but the Krull Kingdom also has it, and it was even used a few months earlier, and it is no secret that the integrated turret is omnidirectional loading, basically the newly built capital ships of the three major powers have begun to be applied.

The optical rangefinder is even more of a rotten thing, and even the Olisa Empire and the Gafia Empire, which have a poor industrial base, can make it, but the performance is relatively poor.

As for the power system, the steam engine and coal-fired boiler technology of the Daheng Empire are not as good as the three traditional powers.

Although it is very difficult to integrate these subsystems, it is the same as rapid-fire guns, and they can be developed in a few years, after all, their basic industrial background is there, and what they lack is actually just an idea.

In this case, Lin Ziran naturally hoped that the unified all-heavy artillery battleship could continue to be kept secret, and the longer the better.

For this reason, he specially instructed the navy to do a good job of secrecy, and if this new type of warship can not be shown to others, it will not be shown to others, even if it cannot be hidden in the future, but it must be hidden first.

Therefore, since the completion of the battleship Ningyu, several sea trials and this formal training have left the port at night and went straight to the deep sea for training, and the exercise training area will also be demarcated, and the navy will directly send other warships to blockade to avoid civilian ships and ships from other countries, especially the navy of the Krull Kingdom.

As for the secrecy when berthing in the port, there is no need to worry about this, because the Quping military base is a pure naval base, and the entire port and the surrounding area are military restricted areas, and ordinary people are not allowed to enter the port.