I am the cook, but I am Li Er's son-in-law

Sails are vital to a boat.

Especially big ships.

Although there are paddles and manpower is sometimes used, but... in most cases, wind power is still needed.If there is no sail, how can we borrow the power of the wind?

Especially when the speed of the ship is only at the current level, isn't the wind more important?
"How is it possible." Yin Xuan shook his head, "Now it's just a matter of deploying the overall ship, without adding any power, that's why the ship runs so slowly."

Li Shimin grasped the point: "So I can run faster in the future?"

Yin Xuan nodded.

"How fast can you run?" Li Shimin was a little anxious. The importance of ships in a war is self-evident. If there are a few good ships when attacking Goguryeo, they may be able to fight faster. So impatient to lay the tracks.

Yin Xuan pondered for a while: "Thirty or forty miles an hour?"

He doesn't know much about steamships, but... Fengchao sent the information to him, and he looked at it a few times, and memorized the parameters by heart.

It's just that Fengchao is somewhat conservative, and the reference data is based on the current ship data of Datang.

More or less conservative.

The given speed of the boat was [-] miles per hour, and Yin Xuan doubled it by a small amount—this is not out of his imagination.

The speed of the steamship can basically reach 45 knots, which is [-] miles per hour. The data given by Yin Xuan is reasonable.

Thirty or forty miles an hour?

Li Shimin's eyes lit up.

This is really a very good number. In fact, sailing can far exceed this number at the fastest time, and it is not impossible to sail more than 50 miles in an hour.

But... this requires the support of the weather, after all, the stronger the wind, the faster the sailing boat can be.

Sometimes this condition may be met.

But in most cases, the wind direction can only help slightly, and sometimes even become a hindrance.

And steamships are faster than ordinary ships, and they are hardly disturbed by the wind direction. This is an extremely rare thing.

"Then look at this boat..." Li Shimin rubbed his hands in embarrassment.

He no longer has any doubts, and he has no doubts about Yin Xuan's words.

He didn't understand these things, and none of Yin Xuan's previous disclosures were fake, but in these matters, Li Shimin had 100% trust in Yin Xuan.

"What about the boat?" Yin Xuan pretended to be confused, full of doubts, "The boat is testing the waters now."

Li Shimin coughed twice: "I mean, the way this boat is built..."

"What happened to Zaofa?" Yin Xuan still pretended to be confused.

Li Shimin spread out and said, "Can I hand it over to the imperial court?"

Yin Xuan hesitated for a while, then shook his head: "You mean this, I'm afraid it won't work in a while."

Li Shimin was stunned for a moment: "Why not?"

Yin Xuan raised his face and said seriously: "It is still in the water test, and some key data have not been completed yet."

As he spoke, he paused: "You can understand it this way. Although the current ship has been launched, it can't sail too far, and it is easy to fall apart..."

"You should know that the ship fell apart when it was launched for the first time."

Li Shimin nodded.

Baiqisi had reported this matter to him, and of course he had secretly laughed at Yin Xuan with Empress Changsun, that the always effective Lord Zhengyang turned his back on this kind of matter.

But he didn't dare to make fun of Yin Xuan in front of him.

Drinks will be deducted!

Yin Xuan patted his thigh: "That's really a pity, I didn't get to see it with my own eyes."

Li Shimin glanced over with strange eyes.

Yin Xuan straightened his expression, and continued: "My family has a big business, and it doesn't matter if I invest in one or several. For scientific research, it is only natural to invest some money in it."

"But this immature method is to be brought to the imperial court. If you are lucky, it is just a mistake in transportation. If you are unlucky, it will sink when you are carrying the soldiers..."

"My father-in-law, you can't bear this burden."

Li Shimin frowned slightly.

What Yin Xuan said touched his heart. It's not that he or Yin Xuan can't bear this responsibility, but... there's no need to take the risk of losing the reputation of the two of them.

Yin Xuan will not hand over the method of making the steamship for the time being.

Not that necessary.

Now the Tang Dynasty has not yet reached the time for naval battles, and Fengchao has only researched the first generation of steamship manufacturing methods, and the technology has not yet been innovated. That is to say... If Yin Xuan gave the steamship manufacturing methods to the court, then It was all handed over.

Yin Xuan still felt that it would be better to keep a few hole cards for himself.

If you really hand it over, you are a fool.

Wait until the technology is updated in the future, just like firearms-then hand over the current version.

Li Shimin thought for a while, then knocked on the table: "When will it be possible?"

Yin Xuan looked innocent, and spread his hands: "How do you know, it's been more than half a year since the first time I went into the water, and I will let Xue Rengui take the boat out for a run to see if I can meet my requirements..."

"Maybe a year or two."

One or two years?

Li Shimin was stunned for a moment, he was used to Yin Xuan's high efficiency now, and he was a little surprised that the sudden one-year or two-year time span came.

"It took so long?" Li Shimin smacked his lips.

Yin Xuan was a little helpless: "It takes ten months to conceive a child, not to mention that this thing is much more complicated than giving birth."

Li Shimin opened his mouth.

"Why don't you give birth to a child yourself, bah, try to make one yourself?" Yin Xuan took a step ahead of him, and blocked his next words.

Li Shimin closed his mouth and almost bit his tongue.

Good guy... Let yourself have a baby, can this man give birth to a baby?

He sighed, and stopped talking about this topic, but ordered a few dishes, waved Li Hui off the mahjong table, and then began to deliver chestnuts to the other three little old men.

Li Shimin is not in a hurry to find a way to build a ship, but as an emperor, he is greedy by nature and wants to hold all good things in his hands.

But... Judging from past experience, holding it in the hands of my son-in-law is no different from holding it in my own hands.

This third time into the water, instead of going downstream, it went upstream, from the Bahe River to the Weishui River, and then rushed to Fufeng County.

The road is longer than going to Lantian.

The power has also increased a bit.

It was more than twice as fast as the second time, with a speed of twenty miles per hour. This was a huge challenge for the hearts of the ship and the researchers like Fengchao.

The result is good.

It took a day to go back and forth, and the passage was very smooth.

Gun Gun didn't like the feeling of being on the boat very much. It decided that it would never come up again, unless it had two catties of apples, one catty would do.