With all the manpower and material resources in place, the construction of the palace is far less laborious than it sounds.

According to Luo Ji's meaning, the general layout of the palace should be as it was original, because he has lived for so many years, he has long been used to it, and if you suddenly change the layout, he will not adapt to it.

As for whether you want to upgrade or do something else while maintaining the original layout, it's up to you.

The construction of the entire palace took four years.

But in fact, the second year after the official start of construction, Luo Ji had already moved back to the palace.

Some of the main palace buildings have been completed, but it took almost two years for the other buildings in the palace to be completed.

Although the layout of the newly built palace has not changed, there are many changes in the overall appearance.

While retaining the ancient charm of traditional buildings, it also brings a lot of modern designs, making some structures and designs more scientific and convenient.

As far as Luo Ji is concerned, he is still very satisfied.

As for the cost, ahem, it's a lot more expensive than he expected......

After that, a period of time passed, and in the naval base of the Yangtze River Fortress, there was another big guy, and the final test was carried out today......

And at this moment, the big guy is quietly crawling on the Yangtze River port......

From a distance, it is estimated that many people will mistake it for a large black whale leaning against the shore.

When I got closer, I realized that it was actually a vehicle of considerable size, which was another project established by Luo Ji a few years ago, the goblin submarine!

This goblin submarine, to be honest, is not being tested for the first time.

But as we all know, goblin things are prone to malfunction, especially when they are just developed.

During the first official test, not long after being in the sea, the battery exploded, killing and wounding several goblin soldiers.

Luo Ji looked at it, and I didn't think it would work.

So the project team continued to improve, and at the same time, Luo Ji also transferred the talent adjustment design drawings of the Terran and Dwarves to the project team.

Goblin things, that's it, you spend three or four years developing them, and then you have to spend another three or four years refining them to get a reliable finished product.

The Academy of Science and Technology and the Dwarves side, in order to cooperate with this submarine, have also developed the Q series geocentric engine, which is for submarines.

As for the model of this submarine, the Whale-4!

The shape design of this submarine adopts a typical 'whale type', so the name of the series is also called the giant whale series, and this submarine has been improved and upgraded four times, as for the small scale, I am afraid there are twenty or thirty times.

When you get closer, you will find that the surface of this whale-4 is not smooth, but densely packed piece by piece, which makes people a little uncomfortable to see.

That piece by piece is called a silencing tile.

In the sea, everyone relies on the feedback information of the sonar radar to confirm the location of the target, and after the sonar spreads over, once it comes into contact with the silocating tile, it will be absorbed and will not produce feedback.

In other words, under normal circumstances, the submarine cannot be detected by sonar.

While speaking, Jiang Zhan, the deputy head of the Goblin Research Department, had already quickly run in front of Luo Ji, and then handed over a document in his hand.

Obviously, the research and development project of this goblin submarine is also led by him.

Flipping through the file, there are some basic data written on it.

The Giant Whale-4 attack submarine is 98.7 meters long, and under normal circumstances, it has a displacement of 3,531 tons on the water and 3,873 tons under the water.

As for speed, the maximum speed on the water is 17 knots, and the maximum speed under the water is 24 knots.

The maximum range, which is currently 4,734 nautical miles, is fully capable of joining the front-line battles.

In terms of armament, there are six torpedo tubes, and the total number of shells carried is generally twenty-four, including sixteen torpedoes and eight anti-ship missiles.

Next, Luo Ji naturally had to sit on it and feel it in person.

To be honest, the inside of this submarine is relatively narrow.

The crew of the submarine was sixty-seven in total, all of whom were composed of goblin soldiers.

On the one hand, it is because they have the effects of the class project, and on the other hand, because they are smaller, they are more flexible in this limited space.

After all the members were in position, the Whale-4 attack submarine slowly set sail and dived towards the deep sea.

According to the data on the report, the underwater noise of the whale-4 is less than ninety decibels.

The water noise of the ocean itself is 90 decibels, which is perfectly concealed.

As the first attack submarine of his Ten Thousand Realms Civilization that is about to be officially put into service, being able to do this is undoubtedly to fully exert the black technology of the dwarf and goblin races, and Luo Ji is also very satisfied.

Of course, leaving aside the performance issues, just the feelings, this is really more boring to sit in a submarine than to sit on a boat......

You said that the navy went to sea on a warship, and when it was bored, it could run to the deck to blow the sea breeze, look at the sky, and look at the sea view.

But in this submarine, you really can't see anything.

Do you think there could be a window under this that you can look outside? No, not at all!

This entire structure is opaque, and the only way to lock on to the target is by sonar.

At the head of the submarine, there was a sonar cabin, and the goblin soldiers sat there, staring at the screen, and the whole process was really not ordinary.

And if you want to be inside the submarine and see the scene outside, there is only one way at present, and that is to use a periscope.

Sneak out of the sea, take a look, and at the same time confirm the specific situation of the target, and then aim at something.

Luo Ji obviously didn't plan to stay on this submarine for too long, and after turning around in the sea, he quickly returned to the shore, and when he returned to the shore, he couldn't help but stretch hard, and sure enough, it was more comfortable to stay outside.

In terms of performance, there should be no problem, after all, before he came over, the Ordnance Research Department had actually tested it many times, and there were no accidents, if it wasn't for that, they wouldn't dare to let Luo Ji go up.

In this way, Luo Ji pondered in his heart......

"Then, let's build twenty ships first."

According to the current development speed of his Ten Thousand Realms civilization, Luo Ji felt that this model would not take long, and in the next five or ten years, maybe he would be able to make a better one, so for the sake of safety, build twenty ships first, and let each fleet divide one point, just in case.

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