The dock is not very good at all. After all, all kinds of equipment have not started to be installed yet, and many of the equipment of the battleships parked on the sea have not been dismantled. They need a huge gantry crane to hang some large parts inside.

Liu Yijiu did not go up to see the Iowa-class battleships that had been dismantled and were only looking at the two steel beasts that made the world tremble from afar on the embankment at the end of the dock, and then took everyone back to the technical conference room of the Northern Shipyard.

Because the battleships are too large, China is not familiar with the structure or other layout. Now the renovation design team has placed the office directly in the northern shipyard. The surveying and mapping work has been completed long ago, and even the preliminary plan for the renovation has been determined.

In the huge technical conference room, there is a model more than two meters long and made from 100 to 100 on the middle table. Many places are even cut open. The conference room is surrounded by blackboards, some with technical lists of key parts on it, and some with assembly diagrams of some places on it, allowing people to understand the details of the renovation project at a glance.

"The biggest problem with the transformation design at present is that the front and rear main guns are cancelled, nuclear power is used, and the front and rear chimneys and other parts need to be cancelled. In this way, the center of the entire battleship will be offset. If the bridge part is not moved, it will be difficult to achieve the balance of the center of gravity. This is the biggest difficulty we encountered in overall design." Seeing Liu Yijiu stopping in front of the model, Wu Tianhai introduced the situation to Liu Yijiu.

After dealing with this young director several times, they knew that Liu Yijiu did not like to listen to their results, but wanted to hear about the difficulties encountered and solutions to them.

When the Americans provided it to the Chinese Iowa battleship, they canceled the main gun and removed all the eight heavy oil boilers inside, leaving only four steam boilers. Although this warship was barely usable, it could not be used in war because of the change in the center of gravity.

It must be modified.

Liu Yijiu also frowned deeply when he looked at the model in front of him.

There have been many magic-reformed Iowa-class solutions on the Internet in later generations, but they have never considered the issue of shifting the center of gravity. After all, those who came up with magic-reformed solutions are not professional ship designers, and they don’t even consider balance at all.

"Now if you demolish the superstructure such as chimneys, the center of gravity is relatively high, right?" Liu Yijiu looked at the model in front of him and asked Wu Tianhai.

The latter nodded, "The bridge is already relatively forward. Originally, there were two triple-mounted main guns in front, and once they were removed, the center of gravity began to move backwards. If the chimney next to the bridge was demolished, the center of gravity would move forward again. Even, the warship might overturn when maneuvering and turning at high speed..."

Wu Tianhai introduced the situation, especially using the supercomputer in the technology room with several screens. After showing their results after many demonstrations, Liu Yijiu also became a headache.

"This is the case now. If a long-range early warning radar is installed on the bridge, although the weight will not increase too much, the change in the center of gravity will be more obvious." Wang Kai also said.

There have been obstacles in the structural design. After the transformation plan provided by Liu Yijiu was simulated by the technical machine, the center of gravity changes very clearly. If it is a straight line navigation, there is no problem. Once a turn occurs during high-speed maneuvering, it will have a catastrophic impact on the entire warship.

"What if we equip this with larger missiles? For example, each missile weighing 40 tons is at the original position of the main gun..." The Dongfeng-31 missile was equipped with a battleship was not in the initial plan.

"It's not possible either. The main reason is that these designs are balanced at the beginning. As long as the bridge is not moved and the superstructure is demolished, the stability will increase by about three meters compared to the original one. This is a very dangerous design!"

Wu Tianhai shook his head.

What missiles are installed on the warships, it doesn't matter.

Because you must reach a balance before loading these missiles, otherwise it will become more dangerous when installed.

At that time, with such a long time of hard work, a huge amount of funds will be buried in the sea.

"In this way, you can only remove the bridge?" If you remove the bridge part, the entire project volume would be too large.

Almost all designers nodded.

Deng Shijun has been studying the structural design and internal space layout of the Iowa-class battleship here, preparing for the design of the 10,000-ton 055 large missile destroyer they are starting.

It is not Iowa-class battleships, but almost all the huge battleships in the world have emerged through countless technical accumulations. This accumulation is lacking by Chinese naval equipment designers. "Director Liu, why not, let's take down the first floor type of the Soviet Kirov-class missile cruiser, adopt a two-story first floor design, the main firepower is concentrated on the front deck, and the personnel live in the middle..."

According to the Soviet Union’s Kirov information, the 701 Institute has obtained a lot of information, which were all obtained by Liu Yijiu through the Heiwei and used for the design reference of the 701 Institute.

After all, Kirov is the most powerful missile cruiser in the world.

Just four ships can compete with 20 Ticonderoga-class missile destroyers in the United States.

"If this happens, except for the shell problem of the warship, all buildings will change. How long will it take? We don't have much time to verify the design in this regard!" Wu Tianhai shook his head. They had considered such a plan at the beginning.

Through computer simulation, these problems in front of you are still unable to be solved.

Moreover, the warship, which is nearly 300 meters long, is far wider than Kirov. In order to maintain stability and the center of the entire warship, the bridge is already in front, with a large number of detection equipment and secondary guns installed next to it, and the chimney behind it is even closer to the bridge.

With the new transformation projects that adopt nuclear power and the advancement of electronic technology, many equipment will be greatly reduced. After this transformation, the standard displacement of the entire warship will be reduced to less than 35,000 tons. This is nearly 10,000 tons lower than the original design!

Such challenges are even much more difficult than the new design of China's self-design.

"Not to mention the others, according to the overall situation of the warship, our missile layout needs to be in front and back. The main missiles are also the greatest deterrent missiles in the future. They are about 13 to 14 meters in length, about two meters in diameter, and weigh more than 40 tons... There are also various other types of anti-ship missiles, air defense missiles, anti-submarine missiles, and torpedo weapons and equipment... These are the issues you should consider when designing." Liu Yijiu had no choice.

He is not an expert in ship design.

"Even a missile that exceeds 40 tons is not good. Before this, the weight of a main gun only had a rotation part of the body, which reached 1,730 tons. We need about 43 of these missiles to balance the original weight. Even if some launching equipment is added, at least 30 pieces will be required to balance the weight of a main gun..." Wu Tianhai's words made Liu Yijiu's mouth twitch.

Let’s not talk about whether there are so many Dongfeng-31s on it. Even if it can be installed, there will be hundreds of Dongfeng-31s in a battleship, and the Ninth Court will not go bankrupt?

Therefore, this situation is simply impossible.

These issues were not considered in the beginning.

"What is your solution?" After so many years, it is impossible for the 801st Institute to not even come up with a solution.

Liu Yijiu needs to know the solution.

"Demolition of all superstructures, determine the power cabin and internal structure inside, and then arrange the superstructure!" The solution proposed by Wu Tianhai can be said to be the most feasible.

The problem is, this project is too large.

There seems to be no such precedent in the field of warship manufacturing in the world.

They all first make the hull and then install the weapon system.

Power or something, this is normal, but the bridge is originally part of the hull.

"If this plan is followed, how many years will the transformation be completed?" Liu Yijiu thought for a long time before asking them.

"The transformation of the hull part can be completed within three years."

"What about the weapon system? This is a bit different from the previous plan." It's still acceptable after three years.

Weapon outfits, especially various systems, are basically carried out during the hull transformation.

"I think that all the 20 secondary guns on both sides can be removed. The secondary guns with a range of more than ten kilometers will not be of much use in future wars. We should change these 127mm secondary guns to smaller caliber and faster firing high-level dual-purpose guns to defend against threats from the air."

"The secondary gun still needs to be left behind. Sometimes it is easy to use to deal with some small fish and shrimp. However, it is best to change the caliber to the same model as in China." Liu Yijiu disagrees to remove the secondary gun. "If all attacks with missiles, the cost is too high, and the cost of the shells is much lower than that of the missiles. Moreover, in order to strengthen the firepower density, some quantity should be increased, and this mainly considers the small-caliber rapid-fire gun..."

Liu Yijiu pointed at some parts on the model of the warship.

Although this battleship is thick and thick in skin, durable and not easy to be sunk, it can defend against invading missiles, which is much better than being hit and then repairing.

Moreover, he wants to make this a hedgehog!

Whether it is offensive ability or defense ability, the whole world must tremble.
Chapter completed!