The next day, Liu Yifeng got up and had breakfast with the little guys, and was taken to the waiting room by them. He's getting used to it, and it's a big deal to sit for another day.

Unexpectedly, Yang Changbai actually came to see him every 1 hour to exchange some topics about the new currency. Basically, it was to ask for advice, and to ask for the parts that he didn't understand when he was sitting in the meeting.

Liu Yifeng patiently explained to him, and there were some things that he couldn't say clearly, so the two simply discussed. This day passed like this, in addition to the pain in his buttocks, Liu Yifeng unexpectedly felt that it was quite fast, much faster than yesterday's waiting.

When he was about to go back to Xiaowu's residence for another night, Yang Changbai brought a person he didn't expect to meet him.

"Liu Yifeng, follow me."

"Lord Zhang!? Well, I'm now an advisor to the Maritime Administration, so it's hard to leave. ”

Zhang Jun gently pushed Yang Changbai's shoulder: "Changbai, you come." ”

"The captain has already told the teacher that I won't need you for a few days, so I just let you build a model with the captain of the school......"

"Model ship! You go away, and you don't understand. ”

Zhang Jun pulled Liu Yifeng and walked out, and when he walked out of the Maritime Safety Bureau, he was a group of knights in naval uniforms, escorting 3 empty horses.

"Can you ride a horse?"

"Will it be a little, the naval station is far away?"

"Of course." Zhang Jun turned over and said: "The naval garrison is secret, and it will definitely not be built in the Fifty City District." ”

Liu Yifeng glanced at Yang Changbai, who was also skillfully turned over and got on the horse, and he explained: "The teacher asked me to accompany you." ”

"Okay, Changbai is my junior, and he is a member of the Maritime Safety Bureau, a disciple of Lord Song, as long as it is not too secret in the naval station, he can go there. Hurry up and get on the horse, there are several craftsmen waiting for you on my side! ”

Liu Yifeng's riding skills were completely incomparable with others, and after a while, Zhang Jun impatiently let Liu Yifeng sit behind one of his personal soldiers, so that he came to the beach within half an hour.

There are two naval headquarters in Dongshan Prefecture, and there is an office in the 50 urban districts, mainly where the civilian officials are. The southernmost shipyards and ports in Yushan Bay are the real headquarters of the Navy.

In the night, Liu Yifeng could only hurriedly look at the appearance of the port barracks, and was taken into a room, where a table that could lie 10 people side by side actually had a sand table on it!

Liu Yifeng glanced at it and instinctively felt that this was the sand table of Yushan Bay. Half of the sand table is land, the other half is the ocean, and the open sea part clearly indicates the shipping lane.

Yang Changbai also saw the navy's sand table for the first time, and subconsciously stopped and watched like Liu Yifeng. But Zhang Jun didn't give the two of them much time to observe the sand table, and walked in with a group of people wearing navy uniforms.

"This is the commander-in-chief of the Dongshan Fleet, Captain Chalang, Wang Qi, Lord Wang!"

Liu Yifeng and Yang Changbai immediately saluted. This person can be said to be as powerful as Song Yingxing, but he is nominally controlled by Song Yingxing in peacetime.

"Who is Liu Yifeng?"

"Xiaomin is Liu Yifeng."

"It's good, young and promising. Get up, and look at the model of the ship, if it is the ship you said. ”

Liu Yifeng was a little shocked for only two days, and he roughly communicated with Zhang Jun about the characteristics of the flying clipping boat, and he made a ship model!?

He really underestimated the love of the navy people for the ship, and also underestimated the vigorous and resolute character of the soldiers.

After taking over the ship model, Liu Yifeng immediately discovered the problem. This is a Zheng He class with the superstructure removed and an extra mast.

"How do you think the ship you told you about is like?"

Liu Yifeng didn't know how to speak, so he could only nod. Zhang Jun still saw that Liu Yifeng did not dare to tell the truth in the face of the unfamiliar senior officer Wang Qi.

"Lord Captain, if you don't force this kid, he won't tell the truth, it's very slippery."

Damn, you just sold me? I'm still your partner!

Liu Yifeng could only smile bitterly and said cautiously: "Two adults, this ship model is still far from what I said. ”

Unexpectedly, his words did not make Wang Qi and Zhang Jun unhappy, and after the two glanced at each other, Zhang Jun said: "Sure enough, speed and solidity cannot be both." ”

What do you mean?

Liu Yifeng looked up at them and took out the second ship model, which was very similar to the clipper boat in his impression.

"Two, this ......"

He couldn't understand what the first model ship meant.

"Sit and talk." Wang Qi asked his soldiers to put a few chairs on the table of the sand table, and everyone chose a corner of the table to make it.

"Little Brother Liu, the boat you mentioned, our craftsmen said that it was feasible after stopping, but it is true that the requirements for wood are a bit high, and the ship itself cannot be built too big."

Liu Yifeng nodded.

The prototype of the clipper was a Bermuda galleon in the Atlantic Ocean off the east coast of the United States, which was originally a small ship with a displacement of several tens of tons. Later, the displacement of clippers that could cross the ocean generally ranged from 200 to 600 tons, and they were basically small boats. The displacement of ordinary Galen ships of the same period ranged from 1000-2000, and the ultimate body of Galen ships even exceeded the displacement of 4000 tons.

The structure of the clipper ship is not destined to be a large-tonnage ship, and the largest seems to be close to 2,000 tons of displacement, and that is also caused by the use of metal parts in many key parts.

The clipper ship in Liu Yifeng's mind is 500-1000 tons with a full load displacement, and it is completely existing as a merchant ship.

So after seeing that the navy had obviously made the ship model of the flying clipper ship in his mind, he took out a strange Zheng He-class ship model, and probably guessed what the navy was thinking.

"We have evaluated the ship you proposed, and we agree that its cruising speed and peak speed may be one-third faster than that of the Zheng He class."

Liu Yifeng knew that he had guessed correctly, and after hesitating for a while, he opened his mouth and said tentatively: "Lord Captain, do you want Zheng He-level to have that kind of high speed?" ”

"Yes." Wang Qi is a straight gut and directly admitted: "Zheng He's stern does not have to exist, we are like trying to cut down the stern and erect a mast." ”

"Then dare to ask Lord Captain, what is the result of your evaluation?"

Wang Qi and Zhang Jun looked at each other and said, "There is a problem with the center of gravity, and the ship is at risk of turning over." ”

Sure enough, Liu Yifeng nodded secretly.

The peak of the Galen ship was the sail battleship of the 19th century, whether it was Britain or France, the warships that left a name in human history were generally 3-mast layouts without superstructures, which was somewhat similar to this Zheng He class.

But they are designed with the center of gravity of the whole ship in mind.

The same is true for the Zheng He class, the center of gravity was considered at the beginning of the design, and the center of gravity of the ship will inevitably change if the stern of the ship is changed to a hasty tune. In other words, if you want to design a Zheng He-class modification without the three masts of the superstructure, the entire ship has to be reset.

After Liu Yifeng violated his intentions, Wang Qi suddenly laughed, making Liu Yifeng and Yang Changbai, who was observing, laugh dumbfounded.

After laughing, Wang Qi stood up directly, patted him on the shoulder without giving Liu Yifeng a chance to get up, and left.

Liu Yifeng and Yang Changbai, who were messy in the wind and completely confused, were left.