Lin Che took out a pen and paper and simply sketched out the shape of the battleship.

Pointing to his flat bottom, he said: "Although the Ming warship is huge, its flat bottom seems to be seriously insufficient in its ability to withstand wind and waves. ”

"Most of the time, we can only rely on inland rivers and offshore navigation, and it is difficult to use it to cross the ocean."

Zhu Fan was shocked by Lin Che's vivid way of drawing the battleship with a few simple strokes.

But I don't agree with his words.

"Sir, don't you know that the weather in the deep sea is unpredictable and unreplenished?"

"Instead, you can walk along the coastline, not only to avoid the wind and waves that can capsize ships, but also to replenish water and food whenever you want."

"In comparison, there is no benefit at all in sailing in the deep sea, even if my Da Ming Sailor can't go far to the deep sea, it's not a defect, right?"

In today's era, the Ming Dynasty's understanding of the sea basically comes from some experience accumulated in the coastal areas of fighting against the Japanese slaves on the southeast coast.

Zhu Fan had heard Tang He talk about some marine knowledge before.

In his subconscious, he thought that a long-distance voyage was the right way to sail.

As for going deep into the deep sea, it is completely looking for death.

Lin Che faced Zhu Zhang's questioning, and casually drew a simple coastline between the Ming Dynasty and the Americas.

Then, a straight line is drawn between the two.

He smiled: "Didn't I teach you the truth that between two points, a straight line is the shortest?" ”

"If the colonization scope of the Ming Dynasty is limited to Southeast Asia, the coastal fleet is indeed enough."

"But if you want to compete with the Europa barbarians, then Daming must have his own deep-sea fleet."

Although taking the Bering Strait line, Daming can also reach the Americas.

But the journey was too far.

And the places I passed through in the early stage were all permafrost that had no value.

Not even a supply depot could be built.

If the Great Ming Mantra colonizes this route, although the risk is not large, the immigration efficiency is also very low.

Compared to Europa, which is across the sea from the American continent.

If the Ming Dynasty does not carry out innovation on the sea.

At the very least, in the struggle for the land of the Americas, it will inevitably become the losing side because of the lack of population.

"I, Daming, am so far away from this new world?"

This is not the first time Zhu has seen a nautical chart of the Americas.

But it was the first time that Lin Che had drawn the location of Europa.

Under the comparison between the two, he finally understood why Mr. Lin said that he could not sail in the deep sea, which was the defect of the Ming fleet.

After all, the American continent is like Europa's doorstep.

If the Ming Dynasty can't go straight to the deep sea and shorten the voyage to the Americas.

No matter how large the native population is, it cannot be transported to the New World, and it can only become the losing side in the colonial battle for the Americas.

Zhu Fan absolutely did not allow such a fertile land to fall into the hands of the Europa barbarians.

He hurriedly asked Lin Che: "Sir, then how should I solve the problem that the fleet can't go straight to the deep sea." ”

Hearing this, Lin Che took out a blank piece of paper again and sketched on it.

Then he pointed to the freshly baked drawings and said: "If the Ming fleet wants to go straight into the deep sea, it only needs to change the bottom of the ship to a pointed bottom, and then replace the hard sail with a soft sail." ”

Such a simple answer made Zhu Fan not react for a while.

Zhu Bai stretched his neck, looked at the unheard of new ships on the drawings, and asked in disbelief: "Sir, as for changing the bottom of the bed and the softness and hardness of the sails." ”

"Can you run rampant in the rough sea? It's inevitable..."

Zhu Bai wanted to say that what Lin Che said was a bit exaggerated.

Although he is not very old, he likes to come into contact with generals such as Tang He and Fu Youwen, and he also knows more or less about the sea.

And he is very curious, and he always likes to get to the bottom of things, unlike Zhu Fan who only likes military affairs, and is not interested in other things.

To some extent, he knows more about the danger of the ocean than Zhu Zhang.

Naturally, it is impossible to believe that a flat bottom can withstand the wind and waves set off by the sea that can engulf a giant ship.

Zhu Fan almost had a similar idea in his heart.

He's seen it many times, though.

Lin Che used simple means to solve the problem that had plagued the world for a long time.

At will, Zhu Fan casually gave Zhu Bai a head on it.

The lesson said: "Mr. said yes, then it must be done, don't you even understand the truth of great ingenuity?" ”

Zhu Bai pursed his lips, and he just asked a question, and he was inexplicably beaten.

But Zhu Zhang's bold reprimand really made him dare not be dissatisfied.

After all, in the opinion of Zhu Bai, who received a Confucian education.

Regardless of whether Lin Che said it was right or not, he questioned his husband's behavior, which was already very deviant.

That is, Lin Che usually has no shelf, so he put the problem in front of respecting the teacher for a while.

Zhu Bai immediately bowed and apologized: "Sir, I shouldn't have questioned your words just now, and please don't be surprised." ”

"What is there to apologize for."

Lin Che faced Zhu Fan and Zhu Bai, his attitude was surprisingly good, if Zhu Yuanzhang and Zhu Biao were present, he wouldn't bother to deal with it.

Lin Che helped the poor Zhu Bai up, and raised his hand to give Zhu Zhang, who was still snickering, a brain meltdown.

Lectured: "You kid have listened to my lessons for so long, have you even forgotten the rules?" ”

"If you think you think the troops I am talking about, you can ask directly, after all, the truth is clearer and clearer!"

"If you bully your brother again because of this problem, you should reflect on it for a few days before you come to the class!"

When Lin Che lectured, he never forbade students to ask questions.

Because he thinks it's not interesting to just point out the country by himself.

The best way to pass the time is to talk unscrupulously together.

After teaching Zhu Fan a lesson, Lin Che reached out and rubbed Zhu Bai's head, and said with a smile: "If you have any questions in the future, just ask directly, if he dares to give you a brain melt again, I will help you return it." ”

"Thank you, sir."

Zhu Fan didn't expect that Lin Che would help him out, and he was immediately moved and bowed again and again.

"I said, don't do so much nonsense with me."

Lin Che picked up Zhu Bai and once again emphasized classroom discipline.

Then he pointed to the drawings he drew and answered Zhu Bai's question just now: "The biggest reason why the pointed bottom boat can withstand the wind and waves is that its pointed bottom destroys the tension of the sea surface." ”

"And the thrust generated by the rippling waves constantly acts on the sides of its pointed bottom, so that the boat is unexpectedly balanced."

Hearing Lin Che's description of the spire, Zhu Bai couldn't help but ask, "Sir, are you saying that the spire is like a tumbler in the sea?" ”

"No matter how the waves push it, it will return to its equilibrium state and will never be slapped into the deep sea by the waves?"

Lin Che glanced at Zhu Bai unexpectedly.

I didn't expect this kid to give such an apt analogy.

(End of chapter)