Barges are classified according to the materials they are made of, and there are roughly three types. Pen, fun, and www.biquge.info

In the beginning, of course, it was a barge made of wood.

However, in the 20th century, wooden barges were gradually replaced by other materials due to the rise in wood prices and the rise of environmental awareness.

For more than a century, steel barges were the most used barges in the world.

However, before the development of steel barge technology, or it can be said that before the world's steel production exploded and there was a surplus of steel production, the most used by countries was another kind of cement barge.

Because the technology is simple, it can be poured and molded at one time, and it can be manufactured by any factory with a little bit of technology.

Moreover, with the development of the construction industry, the production of cement as a raw material is extremely large, and it can be found almost everywhere.

Therefore, before the development of steel barge technology, cement barge is a product that replaces wooden barges.

Moreover, because cement barges are cheap and simple to manufacture, even after the explosion of steel production, there are still many places where this kind of cement barge is used.

After 5 years of development, Xuanjun already has three complete cement plants. It can be said that the production technology of cement is already very mature and can be expanded at any time. It is very suitable for the production of cement barges.

Prior to this, the cement production of the United Kingdom of China had fully met the domestic demand.

The cement production plant was unable to find a surplus market, so the pace of expansion was temporarily halted.

Now with the construction of new immigrant settlements, if you add cement barges, it is just a new economic growth point.

Since there is no problem in terms of technology and production capacity, cement barge is a good choice.

However, the manufacture of unpowered cement barges is simple, but these unpowered barges also need to be towed by a powered boat.

A powered tug or push boat can drive at least 10 non-powered cement barges.

If the fleet is not slow, it can carry more unpowered barges.

In this way, while manufacturing non-powered barges made of cement, a certain proportion of barges made of powered cement must be produced.

The steam engine plant can also be expanded to increase production capacity, and heavy industry also has a good opportunity to develop. It is no wonder that in later generations, the country always engaged in some big projects, it turns out that big projects have so many benefits.

Thinking of this, the corners of Chen Xin's mouth couldn't help but show a hint of a smile.

Unexpectedly, the first time the kingdom exploded equipment, it was a cement barge, and when it came out, would it seem a little LOW.

However, being able to explode the industrial sea in 1630 is really emotional.

Hey, no, Chen Xin only remembered when he got here, it seems that the first product to explode the industrial sea seems to be a fast crab?

Although in the continuous improvement, the fast crab has been divided into more than a dozen models with a total of more than 70 ships, and it has been completed in four years.

However, more than 70 ships with a displacement of 200 tons manufactured in a division of labor and cooperation have determined the process and are barely considered industrial in this era, right? Probably.

After determining the general direction of the manufacture of inland river barges for a long time in the future with the responsible person of the Military Management Commission, Chen Xin issued a large number of orders for the transfer of personnel and materials according to the needs of the Military Management Commission's grand plan.

It was not until more than two hours that the meeting was preliminarily concluded.

But that's just the beginning.

In the next few months, I am afraid that Chen Xin will not be able to be idle.

On the same day, the CMC established the name of the grand plan and set up a general headquarters for the "large-scale development of the southern region."

The entire Xuan army began to make a strategic contraction.

First of all, on the Houjin side, the cavalry of the Jihei detachment, which originally set out from Jilin and Heilongjiang regions, composed of 2,000 tigers and ethnic minorities, ended the half-year-long attack on the surrounding areas of Houjin, retreated into the deep mountains and old forests, and continued to lurk and develop forces.

The troops of the southern administrative region also changed from the original offensive posture to the original active defensive state, no longer attacking cities and plundering land, but digesting some of the new immigrants in the past.

The guerrilla detachment was in a special situation, and their task was to muddy the waters of the Korean Kingdom, to weaken the population and development potential of the Korean Kingdom as much as possible, and they did not need to consume much of the supplies of the United Kingdom of China, and basically relied on the supply of the local Koreans. So, they don't need to stop the offensive, as long as it goes according to the original plan, there will be no problem.

The Kyushu Prefecture also had to accept some of the immigrants, and at the same time, when the Kingdom was carrying out the "Southern Development Plan", it was basically unable to support the Kyushu Prefecture Military Management Council, so they also needed to reduce the frequency of the original raids against the Japanese Kingdom.

Fortunately, the previous blow to the Japanese shogunate also had some effect, and the situation of being passively beaten for a long time and not being able to do it made many daimyo who were originally afraid of the shogunate a little cautious.

Up to now, at least 10 daimyo no longer obey the shogunate's orders, so the plan to appropriately reduce the pressure on the shogunate and return the Wakoku to the state of warring states for hegemony can be implemented.

Next, it's the Dutch.

No one knows if these bastards, who have come from thousands of miles to Asia to carry out commercial and colonial activities, will come to take revenge again.

Since we have no ability to carry out an expedition for the time being, we can only find a way to seize the time to strengthen our navy.

However, the transmission of news in this era is really slow and urgent, and it will take at least half a year or even longer for the Dutch to retaliate, or to make other reactions.

The historical treatment of Peter took several years to settle.

Therefore, Chen Xin is not too worried about the Dutch people. Europe is so far away from Asia that it is impossible for too many ships and people to suddenly come to Asia with the seafaring technology and material storage capacity of this era.

Moreover, in half a year, the strength of our own navy will definitely have returned to its best state long ago, and it is likely to be even more powerful because of the progress of breech artillery, recoil devices, sighting, fuze, shell charge and other technologies.

What Chen Xin cares about is the pirates who are fighting in the South China Sea, will they despise him because they have not completely annihilated the invading Dutch fleet? Will they ignore their previous warnings and attack the kingdom's fleet?

Everything is unknown, in the previous years of the construction of the intelligence line, the car retrograde year focused on the Houjin and Daming, these pirates, it is really a little negligent, so, now there is no intelligence basis to judge the enemy's attitude.

Chen Xin can only ask the coast guard to strengthen the alert level when escorting the convoy, and there is nothing else to do.