But this thing is too advanced for Datang and is unnecessary. It is already very powerful to have weights that are accurate to grams, and as for the subtle gaps caused by air corrosion and other reasons in daily life, it is inevitable.

Hearing the approximate conversion given by Li Ke, Li Shimin probably converted, and was a little stunned, a ship can carry 10,000 stone of goods?! A set of Mingguang armor is about 35 catties, doesn't it mean that a sea ship like this can carry more than 30,000 sets of Mingguang armor?!

The volume of this material delivery far exceeded Li Shimin's imagination, which is much stronger than land transportation.

"Can the inland river of Datang be opened at present?" Li Ke asked.

"It's okay to be unladen but not fully laden, the spire-bottomed sailboat is a sea vessel, its waterline is deeper, and the river can't support it, but the ship that transports goods is about 10,000 stones, if it adopts the traditional flat-bottomed shape, it can be transported in the canal, and the paddle wheel with the spinnaker is more powerful." Yu Wenlin said with a respectful face.

(The above canal feasible stone boat record from Tang and Shi Huilin's "All the Scriptures and Meanings": the residents of the health care to send death and marry are all in the meantime, open the alley for the garden, and drive hundreds of workers, south to Jiangxi, north to Huainan, a year to go, what is the benefit, this is nothing less than ten thousand.) ）

"We are talking about sea ships now, it is the beginning of February, before the middle of July this year, that is, five and a half months, and all the official shipyards of Datang in the Bohai Sea will be handed over to you, and most of the strength of Yuelai Commercial Bank will be mobilized for you to use, you can hire as many people as you want in the vicinity, no matter the cost, can you build several sea ships of this scale?" Li Ke didn't talk nonsense, but asked directly.

The reason why it was mid-July was because the battle of Qadihya between Arabia and Sassanid Persia began in about three months from July to October, and the journey was calculated as one and a half months, and the remaining one and a half months to Sassanid Persia must have been handed over to the other side.

Of course, the handover personnel can leave early, or even now.

But it's okay to allow plenty of time.

"If enough ships are mobilized to use the canal to transport timber from various areas of Datang to the Bohai Sea, five and a half months, counting the current two, the minister can build up to four more ships, because the shipyard in the Bohai Sea only has three docks, and there is no ready-made dock for expansion, at most it can only start building one at the same time, no matter how many people there are, it is useless, but if the time is not tight, the follow-up dock can be expanded, and the construction of a dock will take about one to one and a half months."

"Does Your Highness need to go to sea?" Yu Wenlin looked at Li Ke and asked.

"That's right! By going to sea, taking the Guangzhou Tonghaiyi Road (the Tang Dynasty's name for the Maritime Silk Road), and going directly to Persia, I can provide a complete nautical chart, including relevant tools that can be located during the night and day. Li Ke said directly.

Yu Wenlin's eyes lit up instantly, and he raised his head directly and said, "Your Highness, the minister strongly requests to follow the fleet to act together. ”

"No, you still have a lot to do." Li Ke shook his head and refused directly, Yu Wenlin is different from Lu Daqiang, Lu Daqiang and other craftsmen, it can be said that they can become master craftsmen, it is completely piled up with time, and they may have talent, but not much.

And Yu Wenlin is different, Yu Wenlin is considered to be a person who Li Ke has encountered, a person who really has the temperament of a scientist in ancient times, he is very similar to Li Ke's graduate tutor in the university in later generations, and Li Ke's mentor is the kind of real pillar of the country.

Or people say that for most ordinary people, the mentor you come into contact with in college may be the pinnacle of your life. If you don't know, you don't know how awesome your mentor is.

Li Ke didn't know when he was studying, and he also gradually learned how awesome his mentor was after graduating from graduate school.

And Yu Wenlin's temperament is very similar to his teacher, for example, this straightforward and simple way of communication, it's not that he doesn't understand, but he is too lazy to learn, because in his opinion, this straightforward way of communication is the most efficient way to communicate, which can avoid wasting his time.

"Your Highness, rest assured, I have found a few good seedlings, most of what I have learned can be left to him, even if I die, Your Highness, you will not be unavailable, but if I follow the fleet, I may be more able to discover the advantages and disadvantages of the ship, and I will not delay learning and research on the ship, in addition, we are a fleet to act together, each ship also has a small boat and a watertight cabin, so as not to die." Yu Wenlin arched his hand.

Li Ke was completely speechless, what did you say you were a researcher.

"In this way, I don't think you need to go to Persia, it may take half a year to go back and forth, which is too long, if you want to go to the ocean, you can test it in the Bohai Sea, East China Sea, Yellow Sea and other sea areas, and if you find a problem, you can adjust it at any time, which is more efficient."

"And it's not that these ships won't be built after they are built, after these ships are built, the construction of the entire fleet will not stop, but will increase!"

"There's no limit to how much you can spend on your research." Li Ke hurriedly painted cakes for Yu Wenlin.

"If that's the case, that's fine." Yu Wenlin thought about it, he didn't have to go to Persia, he just wanted to study how to build ships.

"Then it's decided, if you can maintain six sea vessels, you can consider the ratio of the fleet, for example, those that are dedicated to housing personnel, and those that are dedicated to transporting goods, and you can make detailed arrangements." Li Ke said.

"I understand that the counterweight and position arrangement of the spire is very difficult, and I will consider it if you don't say it." Yu Wenlin nodded directly and agreed, "But Your Highness, I still have an idea, if it is for the ocean, I personally suggest that the riveting technology should also be applied." In this way, the keel of the bottom of the ship can be strengthened, and it will also be more handy in fighting storms. ”

"Can it work? If I pass the covering iron, will it affect the progress of shipbuilding? Also, if you cover the iron sheet, the counterweight will have to be recalculated, right? Li Ke hesitated.

"Your Highness, this is not something you should consider, this is what I should consider, I can definitely guarantee that it will be completed! The progress will definitely not be affected, but I need your Highness to provide me with materials and related technology! And of course, get the money ready! "Yu Wenlin is called a you're welcome.

Li Ke: "......"

Okay, you're the boss, you have the final say. The riveting technology is actually not difficult, of course, it is certainly not as efficient as that of later generations, but in Datang, this thing is already very advanced, after all, there are still riveting parts on modern aircraft carriers more than a thousand years later.

As for money, Li Ke doesn't care at all, he is not short of money!