At this time, the construction of this canal has not completely stopped, most of the bottom reinforcement has been completed, and there are still a small number of workers, and there are still many workers in the intense construction.

According to the plan, the entire canal will be completely completed in 10 days, and now the final finishing work is left, with a very small part of the bottom construction and a small part of the final dam.

A large canal, if there is no dam, there is no way to control it, any large-scale canal needs to have this.

It's just that now there is no electricity, and there is no steam engine, so it is difficult to open and close, and in principle, this dam, unless it encounters special circumstances, such as a huge typhoon, for example, in the event of a war, generally speaking, it will not be closed.

In order to open and close such a dam, it is necessary to use at least 12 drives, at least 1,000 animals and at least 4,000 laborers.

In the era when there were no power facilities, this was a huge project, and if it weren't for Zhao Xin, a traverser like Zhao Xin, the personnel of the Northern Song Dynasty would not have thought of it.

A dam that can pass more than 200 meters into the sea through a huge gate is an unimaginable thing in itself.

The canal is very grand, but also very huge, and even now, the transmission device of the opening and closing dam has not been completely installed, and in the future, when completed, a small part of the dam body will be blown up, and the remaining dam, in fact, is semi-opened, which saves a lot of power.

Zhao Xin looked at the huge project completed in his hands, and sighed with emotion in his heart, the speed of the Dinghai Navy was really speeding, 2 years ago, when he just arrived at the Dinghai Navy, what was the Dinghai Navy, it was a deserted, almost no future fishing village, thousands of poor fishermen, struggling to survive here.

In this era, the ocean is not polluted, a little deeper into the ocean, it is also a forbidden area for human beings, all kinds of marine fish, living freely, not to mention the traditional four major fishing grounds, even if it is some inshore, it is also a very developed fish resource.

Dinghai side, located in the Yellow Sea in later generations, however, in this era, the Yellow Sea is a little larger, there is no large-scale alluvial plain formed by the Yellow River, the area of the Yellow Sea, compared with the later generations, at least hundreds of thousands of square kilometers larger, in the Yellow Sea, rich in large and small yellow croaker, these are lying in the sea water.

There are fish in the sea, but these fish are not ordinary fishermen can catch, they are poor, long-term fishing, but they can't even afford a boat, they are at most in the offshore to catch the sea, or take risks, into a little deeper sea, as long as the slightest carelessness, not to mention the weather changes, sometimes, even the tide rises day and night, will cost a person's life.

But now, under the role of manpower, the Dinghai Navy has surpassed this era, and all the cities in the whole world, in terms of area, more than 300 square kilometers, Dingjun, in fact, is much larger than Tokyo Bianliang.

In addition to the large, the degree of modernization is also very high, the 21st century urban layout, a large number of high-rise buildings, currently set the navy, because of the relationship between technology and architectural strength, the highest building is only 19 floors, converted into height, less than 80 meters, but such a height, in the Northern Song Dynasty, is unique.

A modern city, so quietly, built by the sea, this, Zhao Xin is very fulfilled, the foundation of a modern city has been laid, in the future, when heavy industry and polluting industry, is relocated to the Ryukyus, what remains, is commerce and a large number of research institutes, the strength of the entire Dinghai Navy, will be on a higher level.

Because of the relationship between the canal and the water, Zhao Xin had to dig the canal down without irrigation facilities and locks, and now, almost the lowest place, is 30 meters below sea level, and the overall depth will reach about 40 meters.

The seashore also needs to consider the tides, not just like the banks of the Yellow River, to take into account the problem of the Yellow River constantly rising, so it is not necessary to build too high above the water level, it is enough.

The canal is very large, but before the water is filled, it seems very monotonous, and it is time for the final end, even if there is any idea, there is no way to change it, and Zhao Xin will not change it.

Some projects, with some scientific foundations, all to change, will only make it impossible to serve below, and the navy has not yet been developed, and for all kinds of forces, for all kinds of physical problems, it is still not a lot of things.

After arriving at the canal, Zhao Xin actually regretted it a little, giving them the idea of the river port, what a huge project this is, and the dense shipyards, which will become, in the future, the absolute center of the Dinghai Navy in the shipbuilding industry, as long as it sinks down for two years, the Dinghai Navy will really appear with thousands of sails.

But rats, in the end, Zhao Xin is just going to leave them 2, which is also a blessing in misfortune, 2 river ports, will not affect the overall situation, and will not even affect the operation of shipbuilding, but the choice of place above, need to be considered, how to design, so as not to affect shipbuilding.

15 kilometers, in the huge East Asia, is not a very long distance, but for shipbuilding, it is not small, without a large number of lifting machinery, without the premise of computer-aided design, the area of the shipyard will be very large.

A sea ship of almost 4,000 materials, its area alone, is more than 300 square meters, 20 meters long, 15 meters wide is almost this.

To build a ship, need to build a large number of docks, Zhao Xin is to build a large number of shipyards, not a simple dock, under the premise of personnel and technical personnel in place, a shipyard will have at least 20 docks, large and small, the area of these docks alone, almost there are nearly 5,000 square meters, plus other land area, a shipyard, at least need more than 30,000 square meters.

According to the golden distance between the two sides of the canal, within 2 kilometers, the entire canal is only 60 square kilometers.

In fact, it is impossible to give such a large area around the canal, and the entire Dinghai Navy is only 300 square kilometers, and it is absolutely impossible to use one-fifth of the land for the construction of a shipyard.

According to the plan of the Navy, the area that can be taken out is about 27 square kilometers, that is, 27 million square meters, and if it is fully utilized, it can be used as 900 shipyards.

In fact, this is simply impossible, shipyards cannot be stacked one by one, there are personnel, accommodation, office buildings and roads, etc., and in the end, on both sides of the strait, 300 shipyards are left, and the first shipyards set up are about 80.

It's not that the navy doesn't have money, it's not that the position is insufficient, the key is the problem of personnel.

Shipyards are manpower-intensive industries, in the current Northern Song Dynasty, those shipyards in the south of the Yangtze River, even if they build about 100 small boats, they use about 50 people, if the ship increases to 800 materials, the personnel will be slightly reduced, but it will also reach about 250 people, the real 4000 materials of the big ship, on the contrary, to use less people, about 800 people.

It seems that larger ships, the use of manpower is reduced, but the efficiency is also much reduced, an average of about 800 materials, it will only take 2 months to launch, but for 4000 materials of ships, it will take at least 2 years, which is 12 times more than 800 materials.

It's a smooth relationship in all respects, and if any of the materials are lacking, the wait will be very long.

At present, that is, the maritime merchants, who have the money to build huge sea ships, really belong to the merchants of the Northern Song Dynasty, at most between 1000 and 2000 materials, such ships, the price is not expensive, and the investment is relatively fast.

For example, take the shipyard that is now designated for the navy, because of the large number of tools used, in fact, there are relatively few personnel, but a shipyard has at least 20 large and small docks, according to a dock with 40 people, it almost needs more than 800 people.

The population of the Dinghai Navy has now exceeded 2 million people, and there is really no shortage of ordinary workers, and if there are 300 shipyards, the average of 1,000 people in each shipyard is almost 300,000, and there is some pressure, but it can still be done by getting together and concentrating manpower in this aspect.

The workers at the bottom are easy to find, but what to do with the craftsmen, shipbuilding is not a simple labor, it has technical content in the middle.

In the shipyards in the south of the Northern Song Dynasty, the status of the big workers is extremely high, and even the chief craftsman counts compared to the words of the master, a senior and historic shipyard, once the big workers change jobs, the impact on them is huge, and some key craftsmen, they even get sick, will affect the construction of a ship.

In Dinghai, everything can be put on science, through research and co-ordination, just like the blacksmiths of the Daimyo Mansion in those days, all the craftsmen's craftsmanship is concentrated, and then analyzed by scientific methods to find out the inevitability, and then increase efficiency.

At present, in the Dinghai Navy, as long as there is a trainee craftsman and 4 assistants who have studied mechanics and trained for a period of time, they can start construction, and even the number of laborers at the bottom has been reduced to 45, that is to say, almost 50 people can start building 1000 seagoing ships.

The construction speed is also very fast, conservatively estimated, a ship plus construction and drying, a maximum of 20 days.

This is the speed of the navy, when it can be solved with tools, it can be solved with tools, if not, it can also work proficiency and overall planning, and the efficiency is far higher than that of other shipyards in the Northern Song Dynasty.

The construction of the shipyard is actually synchronized with the canal, and the construction of the shipyard involves relatively few personnel, but the construction of the shipyard is relatively simple.

With the cement and steel on the premise, the dock was nothing more than a fixed form made of bricks, and then the ships could build the keel in it, and complete the final construction, the whole project was not very large.

Most of the shipyards have been completed, and now they are under intense construction, some shipyards, smaller ships, such as ships below 500 materials, have begun to take shape, and even most of the buildings on the ground floor have been completed, and some larger ones have also completed the laying of the entire keel and the bottom layer, and are under intense construction.

Zhao Xin was very satisfied and walked around the shipyards he was interested in, and then went to the agreed shipyards.

Among the shipyards, there are also three, six, nine and so on, among which the largest shipyard can be said to be the giant of the entire shipyard, it also has 20 docks, but this dock is not the other dock, because he uses all 30,000 docks, that is to say, the tonnage of these shipyards is all 30,000 materials.

This shipyard has not only relocated the largest shipyard in the Dinghai Navy, but also in the past two months, all the shipbuilding design, assistant design and other aspects of the graduates have been filled, plus more than 30 masters who can start work independently, including more than 200 technicians, whether it is technical strength or various machinery, it is the most developed in the entire Dinghai Navy.

Came to this shipyard named Dinghai Shipyard, lined up is a huge dock, 2000 ships, 3000 ships, their dock is hundreds of square meters, but 30,000 materials, it is different, can not be said to be 10 times larger, but it is almost the same, the area of each dock, are more than 1500 square meters, it looks very amazing.

It seems that the construction of a shipyard on the canal is a good thing, and I am not wrong in this choice.

At the dawn of the Age of Sail, shipbuilding centers existed as towed ports, a huge port with tens of kilometers of coastline large enough to accommodate numerous shipyards.

These shipyards close to the sea have its advantages, that is, it is convenient to go directly to sea trials, which is very convenient, and in the Age of Sail, such shipyards were almost the largest among every seafaring country.

In this way, there are also defects, the seaside is susceptible to the impact of typhoons, because the heavy rain and seawater inflow caused by typhoons are easy to affect the production of ships, and similarly, it is not easy to protect.

Historically, during the Sino-French War, China's largest southern shipyard, Mawei Shipyard, was raided by the French fleet, and a large number of mechanical personnel were lost.

On the contrary, it is a river, easy to arrange, a huge river, as long as the water is sufficient, and the ocean is not much different, at most take some waterways, waterways are not troublesome, especially for boats,

It is much easier to fortify, the entrance to the sea, a few bastions, enough to offset most of the attacks, and the iron chains across the canal are also enough to prevent warships from going up.

In modern history, the warships of the great powers have occupied a huge advantage, but they have not been able to go up through the Pearl River and the Yangtze River, and this easy layout along the river is a very important point.

Zhao Xin referred to this plan, the same way, the use of the canal, the large-scale construction of shipyards, so that the entire shipbuilding industry centralized, now, as far as the situation of the Dinghai shipyard is concerned, everything is very good.