Change a batch?

Change!

Pan Feng suddenly grabbed this light of inspiration.

The adsorption of shellfish cannot be changed, so why can't you put multiple coats on the bottom of the ship, and then take off one coat every time. In this way, the bottom of the ship can be kept clean and the service life of the warship can be maintained. Wouldn't it be beautiful?

Thinking of this, Pan Feng stood up excitedly.

OK! This method is very good!

Anyway, it is difficult to clean the bottom of the ship. Instead of cleaning one bottom, it is better to throw away one layer of the bottom of the ship directly!

If we calculate based on the time when the bottom of the ship is cleaned every six months in the next generation, as long as the bottom of the warship is installed with ten layers of ship bottom, the ship can maintain its majesty for five years, and five years is enough for Pan Feng!

It is really difficult for warships to serve for five years unless they are in peacetime!

When Pan Feng thought of this, he couldn't help but pace. Now he had an idea. The question is what materials to use to protect the bottom of the ship to minimize the weight of the hull? In addition, it is necessary to try not to hinder the navigation speed of the warships as much as possible. The most important thing is to prevent those omnipresent shellfish!

Pan Feng was pacing and thinking, and was stunned by Zhang He next to him.

Aren’t there just a few singers? Is it as if my brother is so excited?

"Junyi, go back first, you have something to do for your brother." Pan Fengtou issued an order to expel Zhang He without looking back.

Zhang He opened his mouth and wanted to say that he had just arrived for less than a quarter of an hour, so why did he drive him away?

But when he saw Pan Feng walking to the backyard in a hurry, he could only smile bitterly and shake his head.

It seems that you have to bring a few beautiful singers to do business with your brother.

......

Ignoring Zhang He, Pan Feng quickly came to his backyard.

In the backyard, Pan Feng found a list of materials he had compiled while studying the drawings, which recorded the materials currently available and found.

Pan Feng looked over like this.

Copper, don't!

Iron, don't!

Gold, can't afford it!

Silk, can't afford it!

......

Pan Feng looked at it one by one, thinking about the advantages and disadvantages of these materials in his mind, and suddenly a name of the material that shocked him appeared in his eyes.

bamboo!

Pan Feng couldn't help but recall the various characteristics of bamboo in his mind.

The fibers of bamboo are very tough. Generally, it may not be able to split it even if it does not follow the texture. Even if it hits a reef in water, it will not cause much damage.

In addition, the waterproofing ability of the bamboo skin is also very good. If it is baked and soaked with grease, its waterproofing ability can be improved to a higher level. Moreover, the bamboo surface is smooth and flat, which will not have much impact on the speed of the hull.

More importantly, bamboo is much cheaper than copper and iron!

Although most bamboos grow in the south, for example, there are a small amount of bamboos. Pan Feng does not use too much bamboo for shipbuilding. After all, his overall structure is still made of wood, and bamboo is just used to protect the bottom of the ship.

Thinking of this, Pan Feng finally breathed a sigh of relief.

After the bamboo is split and sliced, it can be weaved. There should be no big problem using it to make a well-fitted protective layer for the bottom of the ship. Even if the bamboo weaving cannot be well waterproof, Pan Feng only needs to be protected against shellfish. With the degree of shellfish erosion, it may take less than half a year to erode a layer of bamboo weaving shell, but it is precisely because the bamboo weaving shell is light and simple that Pan Feng can make several more layers.

Tenth floors are not good, what about twenty floors?

Hanging these twenty-layer bamboo weaving on the bottom of the ship can also reduce the center of gravity of the warship, saving even the ballast!

At that time, the layer will fall off after three months, and after all the twenty layers are removed, there will be the final protection of the original bottom layer, so overall, it should not be a big problem to maintain it for more than five years!

As for five years later, the profits of the warships have basically reached their peak, and then another one will be built!

Of course, these are the ideas of Pan Feng, an amateur. Zhang Chong still needs to think about whether it can be implemented or how it can be implemented.

"Come on, call Zhang Chong for me!"

Pan Feng waved his hand and threw the booklet in his hand to the side.

Finally, I can relax.

Pan Feng's idea was quickly passed on to Zhang Chong. After Zhang Chong learned about it, he hurriedly went down to experiment. In fact, he was more excited than Pan Feng, because for Zhang Chong, a long-distance ship that had never appeared before was about to be born from him. This is definitely a cross-age creation, and it is also the closest step to keeping his name in history!

If such a ship could be made before death, his ancestral tomb of Zhang's family would be filled with smoke!

Zhang Chong left in a hurry, but Pan Feng knew that this experiment could not be done in a few months. After all, the erosion of shellfish cannot be achieved overnight. Moreover, Zhang Chong also had to consider hanging several layers of bamboo coats on the bottom of the ship. These would take time to try!

However, the construction of the navy is not in a hurry. At least before entering Xuzhou and Yanzhou, there is no need to use the navy to conduct water combat.

......

Half a month later, Han Ren's troops finally slowly entered Donglai.

Since then, from Pingyuan County to Donglai County, the entire Qingzhou territory has been completely taken over by the Jizhou Army, and officials in each county have also made minor changes under the arrangement of Shen Pei, mainly because some important checkpoints have been replaced by Shen Pei, in order to make the original officials of the aristocratic families more peaceful.

At this time, it was meaningless for Pan Feng to continue to stay in Qingzhou.
Chapter completed!