That's right, Zhou Zhong did guess correctly, 200,000 materials are indeed the ultimate product that Zhao Xin prepared to make in the sail battleship, 200,000 materials, converted into tonnage, but 65,000 tons, in later generations, 200,000 tons, and even 300,000 tons of ships have become the mainstream, such tonnage, can only be called a small ship.

But for a wooden sail warship, it was already very large.

You must know that unlike the power crew, it no longer relies on wind power, but only the amount of power, no matter how big the ship can be, and the sail warship relies on the wind power.

The size of the ship, the tonnage, and the area of the sails, are directly proportional.

In solving the problem of keel, the steel structure keel was used, replacing the original pure solid wood keel and wooden combined keel, in principle, the Dingjun Navy could manufacture ships at will.

Under the casting of pure steel, 20 meters, 50 meters, or even 100 meters, such a keel can be built, and the width can also depend on the proportion of the sail era, but how much wind power can be provided.

The sail cannot endlessly increase the height, the height reaches a certain level, it will make the center of gravity upward, the center of gravity is the core of the whole ship, why the sail warship with a sharp bottom, than the Chinese sailing ship with a flat bottom, has a higher ability to adapt to sea conditions, the reason is that the center of gravity is low, and it is not easy to capsize when suffering from wind and waves.

Raising the sail unlimitedly would be detrimental to the stability of the center of gravity, and it would not be advisable to go deeper into the bottom of the boat.

The appropriate draft will keep the center of gravity of the ship below the water surface, so that it can maintain sufficient stability when the wind and waves come, but too deep the draft will produce huge resistance, which does not matter to the power battleship, and it is fatal to the sail.

How to find a suitable point from the middle, the future generations are fruitless, because the sail warship, in the 19th century, with the large-scale emergence of steamships powered by steam engines, has gradually withdrawn from the historical stage, and later, international sailing invitational competitions, as well as sports events such as traveling around the world, their sails, the technology content is very high, the range of the round the world sailing is as high as 45,000 nautical miles, almost double the circumference of the equator.

For such a long voyage, many people are only in a team, and even a single sailboat exists, but it can take eighty or ninety days to complete the entire voyage, which is very amazing.

Of course, Zhao Xin would not have thought that it would be impossible to build such a sailboat, without the precision of millimeters, or even more refined processing methods, without the premise of having a deep understanding of sail power, these are fantastical.

Not to mention, in order to reduce the weight, the entire hull is made of high-tech materials, which is not only very lightweight, but also quite strong, which has become the basis for these sailing boats to repeatedly set records.

Zhao Xin now, not even the rubber has been made, let alone those materials, can only be on the foundation of the wooden boat, in the future, after solving the problem of plates and keels, the weight of the sailboat will definitely exceed the current standard,

However, sailing ships of more than 10,000 tons are still a difficult thing to complete, because the larger the ship, the more difficult it is to maintain the overall strength, in the storm, the smaller the ship, the smaller the force, the larger the ship, the greater the force.

Wooden, limited strength, the largest tonnage of the sail warship should be about 11,000 tons, Zheng He's treasure ship, foreigners are more than 3,000 tons, and China itself is more than 20,000 tons.

Take a sunken Guangyou as an example, a ship of 2,000 materials, mixed with nearly 100 tons of tea, 365,000 pieces of porcelain, and stuffed with 1,600 passengers and 200 sailors, this thing, in the era of merchant ships, was at least a 10,000-ton merchant ship.

The famous Titanic only carried 2,200 people, which was a large oil tanker of more than 45,000 tons.

Of course, the super-luxury oil tanker and the old-fashioned sail are two different concepts, and the tonnage calculation is also different.

Zhao Xin himself didn't know that the 200,000 materials he said were calculated according to the calculation data recognized by later generations, which cannot be wrong, but the wooden sailboat, reaching 200,000 materials, that tonnage, is not as simple as only 65,000 materials, and there are too many problems that need to be solved.

The card system and the insight of the traverser are his confidence, the best sail in the era of sail has been made, and the research on the model of the ship, as well as the fluid, has also begun, and on the premise that there is no hostile force on the entire sea, set a higher goal, that is not a problem.

The strength of the wooden hull is not enough, it can be made up for with steel wrapping, compared to the steel ship that is heavier than water, it is easier to lay out than the light wood, and the tonnage does not need to be so limited, the only limitation is in the power.

However, there is no rubber in the Dinghai Navy now, and there is no substitute for rubber, and there is no way to get such power as the steam engine, but similar auxiliary things, such as manpower, or other auxiliary power, can still be obtained.

When solving the basic problem of materials, even if there is no way to get the power device out, the transmission device is possible, different from the limitation of the paddle boat, the propeller is installed at the bottom, and the power is transmitted here through the transmission shaft, which may not be the main power, but can be used as an auxiliary.

In this way, the personnel used by the same tonnage ship will be greatly increased, compared with cattle and horses, manpower is controllable and collective, under the premise of the combination of multiple transmission devices, the integrity and discipline are much stronger than the strength.

Even if 600 people are arranged to be responsible for the auxiliary, a large ship with more than 100,000 materials is enough to accommodate so many, plus auxiliary power, it is the best choice for the Dinghai Navy before it comes up with a steam engine.

In this way, there will also be a positive meaning, that is, in the future, when the steam engine is completed, with a few modifications, they can be used for it.

Unlike Zhao Xin's well-informed, the other four people, even Sun Ji, who had been on the battlefield and had seen more than 100,000 people fighting, were dumbfounded.

200,000 materials, equivalent to 20 times the largest ship made by the Dinghai Navy at present, this is not a simple addition, from 200 materials of river ships to 4,000 materials of sea ships, the difference between this is already huge, but it is always acceptable, but from 10,000 materials, to 200,000 materials, this is not an ordinary degree.

In fact, in the end, the development of the Dinghai Navy still did not build 200,000 material ships, and even in a sense, 100,000 materials, which is already the limit, which is with iron hulls, internal reinforcement, various high-pressure plates, and auxiliary facilities.

With the scientific and technological level of the navy at that time, it was not impossible to forcibly open a sea ship of 200,000 materials, but the overall investment in this way will inevitably be higher than that of ordinary ships, and even in a sense, when steel ships become the mainstream, they still insist on wooden sails, isn't that the development against the tide?

The four of them were all shocked, they couldn't think of how terrible the 200,000-material ship was, especially Sun Ji, who led the newly built 10,000-material sail to the pirate island, although he was not a navy, but he was constantly learning, and he knew very well the difference between a big ship and a small ship in a naval battle.

A ship of 200 materials must not be equipped with ballistas, only a large enough ship can be loaded, and the number of ballistas also represents the power of the ship, a ship of 10,000 materials, dozens of ballistas, plus special crossbow arrows, has shown the terrible destruction of the world, 200,000 materials, what is the concept.

No wonder it is so big, at the same time, Zhao Xin also informed them of the next arrangement, the entire 15 kilometers of the canal, will be intensively built, a large number of shipyards, at the same time as the canal excavation, the preliminary preparations have begun.

The timber obtained from Jiangnan is now temporarily placed in the port, but with the construction of drying rooms one by one and the laying of the foundation stone of some shipyards, they will come in handy.

Zhao Xin told the four of them about the future and the development of the canal, and the future port will become the shipbuilding center of the Dinghai Navy and the core of the Navy.

Of course, Xue Yu and Sun Ji are extremely excited, there will be almost no land war in the navy, and the navy will be the only development, especially Sun Ji, who has experienced the pirate war, and is still a little less enjoyable, how can a big ship be enough, it still needs a little more.

The 15-kilometer canal is still such a huge canal, and how many shipyards there will be in the middle of it, conservatively estimated to be hundreds.

The Dinghai Navy has never been small-scale, the blacksmith workshop of the Daimyo Mansion, everyone else is a blacksmith, even if it is the Daimyo Mansion, hundreds of thousands of blacksmiths, it is already a lot, but as long as the Dinghai Navy is involved, it must be tens of thousands, huge manpower, produce huge output, and ultimately reduce costs.

The shipbuilding industry is the same, the current Dinghai Navy, shipping is the top priority, and the crazy surge in personnel has made the Dinghai Navy in all aspects, has been in a state of tension.

With the help of the big ships of the maritime merchants, the problem of the navy has been alleviated, but it is impossible for the maritime merchants to serve the navy for a long time, their foundation is still to trade at sea, as long as the monsoon is together, they will choose to leave immediately, and nothing can save their footsteps.

The monsoon season of the Northern Song Dynasty, which is at the turn of spring and summer, that is to say, there are still a few months, how to make up for the lack of capacity in a few months, this has become the key, to solve these, it is inevitable to need the outbreak of shipbuilding.

After using thousands of sailing ships, Sun Ji found that even the tens of thousands of large ships of maritime merchants are not as good as these ships, once the sailing ships of the Dinghai Navy are put into production on a large scale, then the transportation efficiency of the entire Dinghai Navy will increase a lot.

Sun Ji and Xue Yu are more from the perspective of soldiers, and the first thing to consider is the navy, and then the benefits of these ships.

Unlike them, Zhou Zhong and Wang Xue, because of their relationship in politics, they think more deeply.

It is no secret at the top level why the Dinghai Navy wants to develop the Navy, and the current development of the Dinghai Navy will certainly not be without desire.

Jiedu makes this identity a little embarrassing, there is a precedent of the Tang Dynasty, as well as the Li family of Western Xia, the center of the Northern Song Dynasty must be vigilant about the Jiedu envoy, don't look at the development of the navy is good, but once you set foot on land, then in the face, it is not a little pressure, it is a lot.

The area of the Dinghai Navy is not small, and it is a reinforced concrete structure, which can accommodate many more people than the ordinary Northern Song Dynasty cities, not to mention 1.8 million people, even if it is several times more, it can be accommodated.

But the navy can't always build cities to live in, he must develop, otherwise, it will not be able to support such a terrifying investment, the navy's investment in urban construction can be said to be the best in the entire Northern Song Dynasty, the Northern Song Dynasty has been founded for so many years, and the project that has been invested simply on the initiative is probably not as big as the investment of the navy for two years.

The port area in charge of Zhou Zhong and the industrial zone in charge of Wang Xue are all related to this, the port area is the transportation of raw materials and the transportation of goods, and the industrial area, although there are two fewer large enterprises, but it occupies a considerable industry in the Dinghai Navy, and they know very well that there is too little industrial land in the Dinghai Navy at present.

No, the establishment of some small and medium-sized enterprises actually has no land, and a 7-story building may have to accommodate 7 or even 14 factories, which is very inconvenient.

After all, the factory needs a lot of raw materials, and it also needs to ship a lot of products, if it is not for the excellent lifting equipment of the Dinghai Navy, the cost of simply transporting these things up and down is very terrible.

What can be solved by the building is always the simplest light industry processing enterprise, but with the support of steel mills and cement plants, Dingjun understands that only large investment and large-scale heavy enterprises are the focus of development.

It's a pity that Dingjun doesn't have such a large territory, and the expansion plans for the steel plant and cement plant have been aborted, let alone other enterprises.

Land has become the most lacking place for the Ding Navy, when taking the pirate island, some people proposed to develop the pirate island, but after Xixi surveyed, the pirate island did not have a large-scale industrial foundation, and could only accommodate tens of thousands of people to live and some small factories.

This is a bit of a chicken rib, in the vicinity of the Dinghai Navy, there are no larger islands, not even one-tenth of the islands of the Dinghai Navy, this is a huge problem, has always plagued the Dinghai Navy.

However, among the high-level people, there is a legend that on a large island thousands of miles away, which is a hundred times larger than the Dinghai Navy, people have now been sent to make a preliminary survey.

I don't know why, when Zhao Xin mentioned shipbuilding, Zhou Zhong and Wang Xue both thought of this, could it be that where to select managers?

Zhao Xin does not take a boat, or does not take a boat to go deep into the ocean, this is well known among the high-level, thousands of miles away from the island, no matter how big, Zhao Xin will not directly manage, will definitely select a manager, then this meeting, the purpose is very strong.

Sure enough, in the next conversation, the two of them confirmed this opinion again, and invariably led upwards, which made Zhao Xin very satisfied, but it was Sun Ji and Xue Yu who were unaware.

Zhao Xin finally sighed and ended this meeting, Sun Ji and Xue Yu are very loyal and capable, but they are still a little worse, fortunately, no one will set a leader for the Ryukyus, that will be a problem, one article and one military force is the standard, compared to governance, military power is more secure, this is also the most needed choice for two people.