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

According to Luo Ji, the general layout of the palace should be as it was before, because after living here for so many years, he has long been used to it. If you suddenly change the layout, he will not be able to adapt to it.

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

The construction project of the entire palace took a total of four years.

But in fact, Luo Ji had already moved back to the palace the second year after the construction officially started.

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

Although the layout of the newly built palace has not changed, there have been many changes in the entire appearance.

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

Personally speaking, Luo Ji was very satisfied.

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

After that, another period of time passed, and within the naval base of the Yangtze River Fortress, there was another big guy who launched the final test today...

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

Looking from a distance, many people may mistake it for a big black whale leaning on the shore.

Only when they got closer did they realize that it was actually a large vehicle. It was another project established by Luo Ji a few years ago, the goblin submarine!

To be honest, this is not the first time this goblin submarine has been tested.

But everyone knows that Goblin products are prone to malfunctions, especially when they are just developed.

During the first official test, the battery exploded not long after being in the sea, causing the casualties of many goblin soldiers.

When Luo Ji took a look at it, I thought it was not possible.

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

That's the thing about goblin stuff. It takes you three or four years to develop it, and then you have to spend another three or four years improving it before you can get a reliable finished product.

In order to cooperate with this submarine, the Academy of Science and Technology and the dwarves have specially developed the Q series geocentric engine, which is for submarines.

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

The appearance design of this submarine adopts a typical 'whale shape', so the series name is also called the Giant Whale series, and this submarine has also undergone four large-scale improvements and upgrades. As for the small-scale

Yes, probably twenty or thirty times.

After getting closer, you will find that the surface of the giant whale-4 is not smooth, but densely packed with patches, which makes people feel a little uncomfortable.

That piece-by-piece thing is called an anechoic tile.

In the sea, everyone relies on the feedback information of sonar radar to confirm the target position. After the sonar spreads, once it comes into contact with the anechoic tile, it will be absorbed and no feedback will be generated.

In other words, under normal circumstances, sonar cannot detect this submarine.

While he was talking, Jiang Zhan, the goblin deputy director of the Ordnance Research Department, quickly ran up to Luo Ji and handed over a document in his hand.

Obviously, he is also the person in charge of this goblin submarine research and development project.

Open the file and there is some basic data written on it.

The Whale-4 attack submarine is 98.7 meters long. Under normal circumstances, it has a water displacement of 3,531 tons and an underwater displacement of 3,873 tons. It is a big guy.

It's really no exaggeration at all.

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

The maximum range is currently 4,734 nautical miles, and it is fully capable of joining the frontline battle.

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

Next, Luo Ji naturally had to sit on it and experience it for himself.

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

There are a total of sixty-seven people in the submarine, all of whom are soldiers from the goblin tribe.

On the one hand, it is because they have the effect of the military project, and on the other hand, it is because they are smaller in size and can move more flexibly in this limited space.

After everyone was in place, the Whale-4 attack submarine slowly set sail and dived towards the deep sea.

According to the data in the document report, the underwater noise of the whale-4 is less than 90 decibels.

The water noise of the ocean itself is 90 decibels, so the concealment is simply perfect.

As the first attack submarine of his civilization to be officially put into service, to be able to achieve this point is undoubtedly the full use of the black technology of the dwarves and goblins. Luo Ji also expressed that he was very satisfied.

Of course, leaving aside the performance issues and just talking about the experience, sitting in a submarine is really more boring than sitting on a boat...

You said that the navy goes out to sea on warships. When they get bored, they can go on the deck to enjoy the sea breeze, look at the sky, and take in the sea view.

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

Do you think there is a window down here that allows you to look outside? No, not at all!

The entire structure is opaque, and the only way to lock onto the target is with sonar.

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

If you want to see the outside scene from inside a submarine, there is currently only one way, and that is to use a periscope.

Sneaking out of the sea, take a look, confirm the specific situation of the target, and then take aim.

Luo Ji obviously didn't plan to stay on the submarine for too long. After circling around in the sea, he quickly returned to the ship. When he returned to the shore, he couldn't help but stretched himself hard. As expected, it was better to stay outside.

Comfortable.

In terms of performance, there should be no problem. After all, the Ordnance Research Department had actually tested it many times before he came here, and no accidents occurred. If not, they would not have dared to let Luo Ji go up.

In this way, Luo Ji thought about it in his mind...

"Then let's build twenty ships first and then talk about it."

According to the current development speed of his civilization of all worlds, Luo Ji felt that this model would not be used for long. In the next five or ten years, he might be able to build a better one. Therefore, to be on the safe side, he would build twenty ships first.

Just divide each fleet into one, just in case.
Chapter completed!