In fact, Zhao Xin has done more in the manufacture of ships, such a major project related to the future development of the entire Dinghai Navy, in addition to a canal, widening the shipyard suitable places, in the shipbuilding itself, the improvement is also quite large.

At present, as far as the Dinghai Shipyard is concerned, 20 ships of 12,000 materials have been built, with a total tonnage of up to 240,000 materials, which is not all the shipbuilding forces of the Dinghai Navy, along both sides of the canal, 37 shipyards have been initially built, involving hundreds of docks of different sizes.

Of course, not every dock has a ship, Dinghai Shipyard, this is a special case, he directly extracted the essence of the original shipyard, plus the elite recently cultivated by the Dinghai Navy, which cannot be replicated.

However, in other shipyards, there are also designers with great motivation and excellent ability, who have also started their own construction after absorbing the advanced equipment and concepts of the Dinghai Navy.

According to the statistics of the staff, there are currently 237 large and small ships under construction, with a total tonnage of 600,000 materials.

It sounds like the other more than 200 ships, their total tonnage, is only more than 400,000 materials, which is not much, but in fact, for the Dinghai Navy, such an increase, when the first batch of ships is completed, the Dinghai Navy will have a capacity that is not inferior to the huge maritime merchants combined, and at the same time, the transportation speed will also increase significantly.

Zhao Xin's time was limited, and it was impossible for him to greet everyone on a large scale, so after a brief talk, he focused on the Dinghai Shipyard.

The Dinghai Shipyard accounts for more than one-third of the ships currently under construction in the entire Dinghai Navy, and at the same time, it is also the most important ship.

If you pay attention to the tonnage, the small boat should be the most suitable, the smaller the ship, the lower the difficulty of manufacturing, just like the designer who dug up the 200 material ship in the navy, why can he dig it over, the high salary given by the navy is only one aspect, and the most important thing is that there are too many such people.

It is conservatively estimated that the entire Northern Song Dynasty, the designers who can independently lead and design more than 200 ships, not to mention hundreds of thousands, there are thousands, the Northern Song Dynasty has more developed water transportation than other dynasties, as well as busy maritime merchants, the entire Northern Song Dynasty supplied the whole of Asia with large ships, in this era of inconvenient transportation, this is simply a miracle.

Below 200 materials are the main ships of canal transportation, and there are hundreds of thousands of ships below 200 materials active in the entire Northern Song Dynasty, even if it is 5% of the annual replacement volume, tens of thousands of ships are needed, and thousands of designers are really few.

Shipbuilders, it is very difficult to upgrade, not only must you have enough work experience, but also one point, talent, no talent, even if you are given 10 years, 20 years, don't want to reach a certain level.

However, this development path has been changed in Dinghai, and the experience of shipbuilding has been replaced by more scientific theories.

In this way, craftsmen who had only experience in designing ships with 200 materials were directly designed experimental ships with more than 1,000 materials, and then after the experimental ship was completed, 10,000 materials were immediately installed.

In a short period of time, a designer has progressed from 200 materials to 10,000 materials, which is equivalent to an increase of 50 times at once, such a span, even in the 21st century, is also leapfrogging, the step is too big, and it is easy to pull the egg.

But this designer is different when he becomes a construction manager and coordinator.

The content of the whole ship is almost made by special researchers, and the builder can record some data in the process of construction, and then these data are also analyzed by professionals, which greatly reduces the difficulty.

In fact, just like catalysis, Dinghai catalyzed the designers on a large scale, and successfully designed a sailing ship with thousands of materials.

However, these have all become a thing of the past, and after integrating the previous lessons and lessons, the new sailing ship scheme opened by the Dinghai Navy is completely different from the previous one, and it looks quite different from the outside, and it is even more so on the inside.

The focus of Zhao Xin's observation, in fact, is also these construction sites, among the 20 docks, there are 4 of them, the earliest construction, and has completed the laying of the entire keel and the bottom layer, is in the high-speed construction, the rest, the progress is different, the last one, even just put the keel in place.

In the early stage of the development of the shipbuilding industry, the tonnage of the ship has not been able to go up, not because of the relationship between materials, but because the technology is not up to standard, to the Northern Song Dynasty, in fact, after a long time of accumulation, coupled with the improvement of the level of science and technology, how much tonnage of ships to manufacture, is no longer a problem.

In the records of the Northern Song Dynasty, there is no shortage of ships of 1,000 tons or even larger tonnage, but these ships are only a few, not the mainstream, the reason is very simple, that is, there are too few.

The keel of the ship represents the overall tonnage of the ship and the solidity of the entire hull.

From the moment the appearance of large sea vessels, it was a huge project, even if it was wood, hundreds of tons of wood piled together, it was a very large number.

As a lighter material than water, generally speaking, wood is difficult to sink, but under the action of large-scale wind and waves, the boat will roll over and disintegrate only for the attack of wind and waves, which is probably most of the reason for the sinking of the ship.

To make a big ship, you must have a huge keel, a big ship that exceeds 10,000 materials, basically, a simple keel will exceed 30 meters.

30 meters is just a number for many people, but for trees, it takes many years to grow.

Trees are not bamboo, and after a rain, bamboo may be several meters long, or even tens of meters long, overnight, but this kind of growth is also the result of being underground for several years and accumulating enough strength.

In shipbuilding, simple trees are not necessarily enough, and they must be hardness and toughness.

This greatly restricts the type of keel selection material that can be achieved by the whole of China, that is, by a small number of trees.

Such wood has very high property requirements, with grease, wear resistance, corrosion resistance, not easy to crack, fine wood grain, easy processing, and strong toughness.

Trees that meet this condition are not those fast-growing forests, most of them take decades to grow to more than ten meters, or even twenty meters away, and only a few can rise to 30 meters away.

The keel is the most important place of a ship, it represents the performance of the whole ship, how much weight it can support, and how much strength it can have.

There are no super trees in Asia, and there are very few trees that exceed 50 meters, and there are relatively few super-tall trees like spruce in Asia, which also restricts the development of the Northern Song Dynasty from the side.

It is precisely because of this constraint that China found another way, in the late Song Dynasty, invented the combination of keels, the combination of multiple sections of trees, together to form a longer keel, in principle, this keel made of ships, there are infinite possibilities.

Timber, in the current Northern Song Dynasty, is not lacking, any hill, can be mined a lot of wood, ordinary farmers chop firewood to cook, how much wood can be used, some fast-growing forests are also very fast.

However, the high-end, suitable for the large wood of the ship, after all, is a minority, not to mention the big ship, in addition to the keel, the requirements for the ship material are also high, because of the relationship of self-weight, the larger the ship, the greater its gravity, even if it is an ordinary ship material, as long as it is not the ship deck, there is little force, and the others will grow.

In the Ming Dynasty, the combined keel was not unlimited, otherwise, there would not be such a limit as a treasure ship, and there was basically no ship that exceeded it.

The reason is that in ancient China, adhesives and connectors were not very reliable, and Chinese craftsmen often cleverly avoided this point and used larger joints to reduce the use of adhesives, so that the requirements for ship materials were higher.

This point does not exist in the Dinghai Navy, the card system can decipher existing materials, and some new materials can also be synthesized, there are many natural binders, and there are even more chemical ones.

With these adhesives, even with relatively low-grade ship materials, large ships can be built, and from this point, the shipbuilding of the Navy can save a lot of costs.

The presence of steel in the Navy, even rivets, is very advanced in this era, not to mention screws.

Among the many small tools, the screw, probably the greatest invention, its invention, makes it possible to connect certain things, without the use of welding process, so that the two kinds of items, closely combined, have a certain strength, this is the role of the screw.

In later generations, screws were widely used in wooden structures, and Zhao Xin certainly used them in shipbuilding.

The first screws were carved into the hands of a good craftsman, and the screws were scanned by the card system and then became a commonly used item that could be manifested through the card system.

The cost of the card system, so that this kind of screw, the cost is relatively high, except for some high-end machines, rarely used in large quantities.

Even if it is a small ship, as long as the screws are used, it is not a few that can be solved, and the conservative is in the tens of thousands, and the Navy has started construction of more than 200 ships, and it is conservatively estimated that the demand for screws is about 1.2 million, which depends on the card system, it is a little difficult.

Fortunately, after a period of hard work, the stamping device was finally completed, even if it was the use of animal power, the whole efficiency was not very good, but after all, he produced, and he could stamping small devices, which greatly solved the problem.

Screws are small pieces of equipment, even if it is the largest kind, it is not very large, animal power can be used, and at the same time, it is used simply for shipbuilding, without steel, iron can be, which greatly reduces the difficulty.

Of course, the earliest stamping machine is not very suitable for stamping screws, Zhao Xin is not particularly familiar with mechanical transmission, but with the real thing, coupled with some theories of Zhao Xin, the manual wire drawing machine is made, the production efficiency is not too high, the quality is not too good, but there is no problem with the wooden boat.

The emergence of screws is definitely an epoch-making project, especially some specific tools, which can be screwed anywhere and in any position, which is even more excellent, what is more convenient and suitable than screws to fix different parts.

Its appearance not only speeds up the process of shipbuilding, but also saves costs.

It turns out that even if the willow connection method is used, the material required is very large, and for the shipboard, it is easy to break if you are not careful.

At the same time, the scope of use is not to cover the overall situation, and there is no way to use willow joints in some unique places.

These places are the most difficult in shipbuilding, in order to ensure the effect, some unreliable adhesives, plus the processing of the ship plate, to form a special curve, so as to be able to basically ensure the demand.

Such a reluctant approach, to a certain extent, is to reduce the structure of the entire ship, ordinary sailing is okay, once encountered a large-scale wind and waves, when the force of the wind and waves, more than the strength of the ship, the ship will naturally disintegrate.

This is the constraint of the times, and it is good that technology has reached such a level that it can be built well.

However, in the Dinghai Navy, once a large number of screws are used, some tiny parts, where the original willow joint cannot be used, can use screws.

Relative to the process of willow jointing, it is necessary to dig out the hole the size of the willow joint, and then fix it with steel, at this time, you should also pay attention to the hammering, the hardness of iron is high, the hardness of wood is low, once it is broken, it is a damage to the hull.

This process is not only very complicated, but the weight of the willow joint itself is also huge, one wears, if thousands of willow joints are used, the increased weight is not a little bit.

The screw is different, a small screw, how big, through the spiral method, bite the wood, so that the two sides are tightly combined, may not be able to compare with the strong one like the willow joint, but it is also much stronger than the bonding, the most important thing is speed.

Compared with the fanfare of the willow joint, as long as the screw has a screwdriver, it will be on the line, and it does not require much technology, a little smarter, you can do it a few more times.

Of course, shipbuilding, the location selection needs to be studied, not casually messed up, even if it is a screw, it can't be nailed to every place, even if the weight is light, more, the same is not good.

A large number of screws of the same technology, has been applied to shipbuilding, cheap efficiency, as well as production speed, these industrialization to show the benefits, in the Dinghai Navy is undoubtedly shown, even if the manufacture of ships, has not reached the degree of industrialization, but the cost compared with Jiangnan, has been reduced by more than 7 percent.

Even in the Northern Song Dynasty, the market economy was equally useful, and the various products of the Dinghai Navy that you did not see paid attention to quality on the premise that the price was about the same, and in the case of the same quality, the price was important, and as long as the price was low, it could be sold.

In fact, greater improvement continues, in the institute, there have been some metal materials, and some high-pressure plates, under the premise that the power is not solved, the stamping device can stamping strength is smaller, but for some less supporting materials, plates, is a good choice, saving time, but also cheap.

Price and efficiency have become the core advantages of the current Dinghai Navy, which is undoubtedly evident in the Dinghai Shipyard, which of the earliest ships, only built less than 7 days, completed 40% of the hull construction, and is expected to be completed within 20 days.

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