[The first update of the supplement]

The queen waited for a long time, and when she saw that no one asked Han Gang, she couldn't help but ask: "Dare to ask Xuanhui envoy, what kind of weapon is it?" ”

"The first is still in the boats. Bigger, faster, more stable boats. For example, iron-boned ships. However, this is only the internal structure, and the shape of the sea vessel is also important. The northern sea area is shallow and shoal, so there are many flat-bottomed boats, while the south is deep and rough, so most of them are wide ships with deep draft and high keel. If you want the ship to travel quickly and steadily, you need to design a new type of warship in the shipyard and then build it. ”

"Is Shenzhou okay?" Asked the Queen.

"Shenzhou is large and stable, but it is slow, it is easy to be attacked by enemy ships, and it cannot be used in naval battles."

"How do you design that?"

"First make a model, and experiment in the water whether it is easy to overturn and whether it is convenient to move. Then make it as it is. The courtiers had models of flat-bottomed boats and wide boats, which were incomparably exquisite, no different from the real thing, but reduced by a hundred times in scale. Just by looking at the model, you can see the differences between the two ship types. ”

Empress Xiang was a little confused, but Han Gang said it in an orderly manner, so he didn't want to ask any more questions, making the Zai Fu think that he didn't understand anything and lost face.

"And the second?" She continued.

"The second is the utensils. Nowadays, on the seagoing ship, there is a compass to point the way. However, the compass is easy to shake when it encounters wind and waves, and this aspect needs to be improved. Also in need of improvement is the transoceanic stellar plate that measures the position of the ship, which is rudimentary and has a large error. ”

Empress Xiang listened even more confused, she had never heard of the compass, and she had never heard of the star-pulling board, "...... How to change? ”

"The list was announced. The needs of the Xuanming Imperial Court, and the principles applied in it, are the following results. Brainstorming, compared to working behind closed doors, will only be faster, not slow. Han Gang said, "After all, the minister is not a craftsman, even if he understands the reason, it is difficult to use it." ”

is still a reward, Han Gang's trick has been used repeatedly, as long as it becomes a common practice, it will be equivalent to an additional channel for progress in the future. After a long time, not only craftsmen, but also some desperate scholars will also take this path. If you are lucky, you will be able to enter the sequence of being promoted to the court from the weapons supervisor and the general supervisor.

Accurate measuring instruments are the key to maritime transportation, and in Hangang's planning, at least the instruments for measuring latitude and longitude should be obtained.

Before the clocks came out, it was impossible to measure longitude. And to accurately measure the longitude, it is necessary to have a nautical clock that cannot be affected by wind and waves. But latitude is not difficult. Star-pulling plates have appeared, which can measure the height of the stars to measure the latitude of the ship, but it is still far from such a precision instrument as the sextant. What Han Gang needs is a sextant, a little worse, a quadrant is okay.

Han Gang had never had the opportunity to see a sextant or a quadrant, but he had only read some books that mentioned these two terms, and he knew the usefulness of the Dao. But he still has the most basic inference ability. Measuring latitude is inseparable from the height of the noon sun, a protractor must be indispensable, a telescope should also be needed, as for the specific structure, there are other components, so that others have a headache, Han Gang is ready to publish the needs of these reward lists in the next issue of Nature.

If you can measure the latitude, it will be much easier to go to Goryeo and Japan. The clumsiest way to determine the latitude of several ports in Japan and Korea is to sail to that latitude and then go all the way east. In addition, as long as the measurement is more accurate, there will be much fewer cases where the target will not be found. And this is not only a great improvement in the level of navigation, but also a successful application of the theory that the earth is spherical.

Han Gang's words, I don't understand much about the principles, but I understand the usefulness. Let the sea ship not get lost, as long as you walk on the right course and reach the end soon, the people's hearts will certainly be able to settle down.

"Is there a third?"

"The third is health care. There must be a ship's doctor on board, who is responsible for treating injuries and illnesses, as well as directing the ship's cleaning and epidemic prevention. As the world says, it is difficult to go to sea, and disease is one of the biggest problems, and wind and waves have to come second. ”

As for scurvy, there is no need to talk about it for the time being. If it's not ocean shipping, the chance of getting scurvy is very small. What's more, bean sprouts, pickles, and tea, which are indispensable on board, can make up for the lack of vitamins.

"There is no need to worry about this matter, if there is a Xuanhui arrangement."

There are military doctors in all armies, who are in charge of medical care and epidemic prevention, and Han Gang's mention is not something special.

"As for the fourth," Han Gang didn't wait for the queen to ask again, and took the initiative to say, "It's about finding out the geography." There are maps and sand tables on the land, which can show the geography of various places. When sailing at sea, nautical charts are indispensable. The signs of the shores and islands in various places, the weather and the ocean currents must be recorded together, and they should be drawn up and assembled into a book for military use. And it can't just be word of mouth in hydraulics. ”

It's not easy, Zhang thought to himself, and it's much harder than drawing a map. However, with the strength of a country, no matter how difficult it is, there is no solution.

"With these four things, the sea will be much more secure. You can explore new routes with peace of mind, and you can also let the navy patrol the sea frontier with peace of mind. "Han Gang has no more proposals, and if these four articles can be done properly, not to mention far away, there will not be much difficulty in the nearby Goryeo, Japan, and Nanyang," the Liao State completely controlled Goryeo and maritime merchants, and it was only a year or two. Among the ministers, it is best to send elite troops to the east as soon as possible, take advantage of the chaos in the Goryeo Kingdom to occupy the island, and build a military fortress. Then build a more suitable ship to replace the existing one. By the time the Liao State pacified Goryeo, and our officers and troops had already controlled the Goryeo Sea Frontier, it would be difficult for the Liao people to use the Goryeo Sea Ships to plague China. ”

"Ladies and gentlemen, do you have any comments on what Han Xuanhui said?"

Listening to Empress Xiang's tone, she was already ready to accept Han Gang's proposal. Several Zaisuke also had no intention of making enemies of Han Gang in this trivial matter that had nothing to do with the interests of all parties.

Zhang Dian said: "The minister has no objection. Since the Liao State annexed Goryeo, the sea had to be strictly guarded. It's better to plan ahead than to make amends. ”

"But how to handle the money?" Xue Xiang asked. The imperial court lacks everything now, and the most important thing is money. Once the movement of ship troops begins, the cost is real money.

"A thousand envoys, seven or eight large warships. It doesn't consume much at a time. For daily use, it can be used by maritime merchants. In the future, the control of the East China Sea maritime trade can rely on commercial taxes to make up for it. ”

"Haimao?" Cai did smell the money inside.

"Merchants pass through the state and county, and every time they pass through a place, it is two percent of the tax. Maritime merchants, on the other hand, may pay two taxes in the city when they enter the port, but what about leaving the port? ”

Han Gang's implication is to slash in the middle of the Goryeo Sea Trade.

Xue Xiang and Cai Qu each nodded. Of course, it is bad news for the Goryeo maritime merchants, but the Zaifu don't care so much, as long as they make up for the extra expenses, the Goryeo maritime merchants will be fine. Anyway, the maritime merchant will not lose money, and it is enough to add an extra 20% of the extraction, which in turn will be added to the cost.

"Money and food can be transferred for the time being, but where will the soldiers be transferred from?" Han Jiang asked.

"Privy Seal?" Ask the Empress about Zhang.

"All kinds of sailors, with Dengzhou being the most elite. There are two commanders of Chenghai crossbowmen and two of Pinghai, and one commander of Anhai and one of the navy army, as for the water divisions along the Yangtze River and along the coast of the south of the Yangtze River, they have not been reviewed for a long time and are not of any use. There are also sailors in Guangzhou and Guangxi, but in the South China Sea. ”

In the first battle of the Southern Expedition, Guangzhou's naval army was temporarily recruited, and it did not come in handy at all after that. Now it's even better, the errand of patrolling the sea has become a transshipment, nominally a naval army, but in fact a merchant ship. The generals in the middle made a lot of money one by one, and if they wanted them to come over to patrol the sea, maybe there would be a mutiny in the blink of an eye.

"Between the ministers, you can set up a general on Jingdong East Road and Liangzhejiang Road as a water army." Zhang Dian continued, "The two Zhejiang stations are located in Changguo. The East Jingdong Road is located in Dengzhou. Six conductors, two of which were stationed in Goryeo. Rotate once a year. Among them, there is a vacancy, and it can be recruited. ”

"The Tiger Wing Navy can't be used?" Xiang asked the queen again.

The fame of the Tiger Wing Naval Army must be much greater than that of the Chenghai crossbowman and Pinghai, and the palace was quiet, it was a Beijing camp, and it was only played when Jin Mingchi was competing for the bid.

"Your Majesty, Your Highness." Han Gang said, "During the Dazhong Xiangfu period, the imperial court edict selected the river in Beijing, and the Huai soldiers were good at fighting in Jinmingchi, and they were established as the Tiger Wing Water Army, which has not seen the sea for many years. ”

How can a duck that has just fluttered in a pond since childhood be placed on the sea? Han Gang wouldn't expect the navy army in the Jing camp to be of any use.

"As Han Xuanhui said, it is indeed not suitable." Zhang Dan chimed in. He also thinks that it is best to let the Tiger Wing Navy continue to row the dragon boat in Jinmingchi, every year the Son of Heaven and the people are happy, and without the scenery of Jinmingchi competing for bids, the excitement is much worse.

"Then according to the chapter, Han Xuanhui's words."

"But there's also the station. The officers and sailors arrived in Goryeo and where they were stationed. Cai did ask.

"I remember that there is a big island in the south of Goryeo."

According to the study of scripture and history, Zhang Dian is the most outstanding one in the palace, and he is a scholar of two subjects. Hearing Han Gang say yes, he began to try his best to remember, but he vaguely remembered, but he couldn't remember the name clearly.

"But the Wa Kingdom?" Zhang Qi asked.

"Tamna can also be counted as one." Han Gang's tone was tactful, but he actually pointed out Zhang Qi's mistake.

Several Zaisuke all glanced at Han Gang, obviously doing a lot of homework. It looks like a lot of time has been prepared for today's proposal.

"However, Tamna is too southern, and it may not be suitable." Han Gang said again.

The so-called Tamna country should be Jeju Island. But Han Gang can't be completely sure. However, in addition to Jeju Island, there are many large and small islands off the west coast of the Korean Peninsula, which are far more suitable for stationing sailors than Jeju Island, which is more southerly. As long as someone familiar with geography is willing to lead the way. As for whether to occupy it in the future, then another story.

"In the opinion of the ministers, in a few days, we can recruit Goryeo envoys to the palace. Since he came to ask for help, he must be happy to see the imperial court send troops. "The big fish that can't be caught with fame and fortune, with loyalty as bait, will bite the hook by itself, Han Gang thought, "Which place is more suitable to garrison troops, let them recommend it." ”

It's so black-hearted. Several Zaisuke were thinking.

Cai did said with a smile, "If you ask for benevolence, you won't refuse." ”

Han Gang nodded slightly, this matter should almost be settled. Although it is just a smooth sailing, it will be of great benefit to the future.

The annexation of Goryeo by the Liao State is not a bad thing, and the possible harassment at sea is not a bad thing, just like now, it is a good result to make the whole court vigilant and increase investment in the shipbuilding industry. In Han Gang's view, although the foundation of the Great Song Dynasty is still land, the sea cannot be wasted.

"Once the official army controls the sea, it will give the Liao State an additional border that must be guarded against. In any case, it's a good thing. ”