Ganning was located in several counties along the Yangtze River near the junction of Jiangxia, Lujiang and Yuzhang counties, setting fires and looting to cause trouble. The noisy range lasted for two or three hundred miles, and the hinterland of the Eastern Wu was shocked overnight.

At the same time, Li Su himself, in Baqiu Port, which is the gateway to Changsha, has completed the material preparations before the decisive battle with 25,000 main combat soldiers.

Of course, the group of generals and soldiers brought by Li Su will continue to maintain training every day and strengthen the running-in with new equipment and warships. At the same time, the veterans left by Gan Ning will be guided by the best condition. Until when Zhou Yu is seduced, he will be hit head-on.

Because Gan Ning was responsible for seducing the enemy, and Zhao Yun and other land cavalry generals were blocked in the land defense zone on the Dangyang-Yicheng line, thinking that they were suspicious of soldiers, so Li Su did not have many generals under him who used this water battle.

Li Su himself does not know how to command tactically, he is only responsible for strategy. It is Li Su's responsibility to force the enemy to the time, place, and situation he hopes to start fighting. As for the fight, it still depends on the generals after the fight.

Now the main general of the water battle under Li Su's command still depends on Taishi Ci, the "defeated general" who just lost his troops two months ago. He may join Zhou Tai during the decisive battle in the future. There is also Huang Zhong, who was also a little engaged in water battles in Changsha and Jiangling.

In history, Huang Zhong was only 65 years old and joined Liu Bei's camp. Almost the opportunities for contributing to his military career were concentrated in the several battles in pacifying Yizhou (including Hanzhong), so he did not get the opportunity to fight.

However, since Huang Zhong is a native of Jingzhou and has been with Liu Biao and Liu Pan, he will definitely be able to fight a little bit - no southern general is completely unaccustomed to water. Moreover, on the river, bows and arrows are the first. Huang Zhong has the opportunity to shine as long as he commands the crossbowman troops.

...

Some people may think: Gan Ning went to guerrillas this time, and harassed Wei and rescued Zhao behind enemy lines, and brought a total of fifty new big blessing ships. So there will definitely be more big blessing ships left by Li Su's decisive battle on the battlefield?

This perception deviates from the facts, because Li Su did not leave any established blessing ships for his decisive battle fleet. Even if there are a few occasionally, they are still conducting reconnaissance and command missions.

The weapons and equipment on all warships are also very different from the guerrilla fleet in Ganning.

On the one hand, the reason was that there were too few Dafu ships - the Han army built the Dafu ship on a large scale was only one year, and it was built in Jiaozhou in the first few months. Later, new ships were built in the Xiangjiang River Basin and Dongting Lake, and the total cost was less than ten months.

It would be great to build fifty or sixty lucky ships in such a short time. Of course, most of them were taken away by Gan Ning, and good steel should be used on the blade.

On the other hand, Li Su's fleet aims to fight decisively on the water, not guerrilla warfare, and Zhou Yu does not have the possibility of flying kites with Li Su, so the speed advantage is not that important.

Since that is the case, what Li Su wants to keep is of course the models with excellent melee ability and speed indicators that can be slightly sacrificed. Including those old ships and old warships that began to build accumulated as early as when Zhao Yun was in Changsha.

(Note: This "old" is relative to the Dafu ship, which is only one year in general. The oldest ship built by Liu Bei's camp in Changsha Shipyard is five years, that is, the second half of 192. The service life of warships in the Three Kingdoms is generally thirty years)

Among these warships, the largest and oldest style, called the "Five-Tooth Warship", is improved from a traditional building ship with a capacity of more than 2,000 people. It is larger in size, can hold 3,000 people with a full load, and can also hold a lot of heavy equipment.

The "Five-toothed Warship" was only invented in history when the Sui Dynasty destroyed the Southern Chen Dynasty. The biggest feature was that five huge poles were installed on the bow and the side of the ship. When the poles were all placed, the hull looked like a big turtle with both the limbs and the turtle stretched out.

The pole is several meters long, and a sled hammer head of a thousand kilograms is installed at the front. Once the enemy ship is close, the hammer head will be lowered like a suspension bridge when defending the city. After hitting the enemy ship, it will be a big hole and it will soon sink.

In history, when Yang Guang punished Chen in the early Sui Dynasty, the material of the rod was just a large stone drilled into a hole, smashing the warships in Nanchen and sank. Within hundreds of years, the rod hammers of the five-tooth boat were improved several times, and in the prosperous Song Dynasty, they turned into pointed hammers.

For example, during the Jingkang Incident, when Han Shizhong defeated Jin Wushu, the five-toothed warship he drove had evolved into a hammer. However, after the Southern Song Dynasty, the five-toothed warship never showed its might and eventually eliminated history after the Battle of the Destroyment of Song.

During the final battle between the Mongolian and Yuan Dynasty and the Song Dynasty, Song general Zhang Shijie also had five-tooth warships, but it was obviously not suitable for the wind and waves on the estuary of the Yangtze River and the seas of Hangzhou Bay. Since the Battle of Jiaoshan, Song army large ships were passively beaten against the flexible small ships of the Mongolian and Yuan (of course, the Song army was depressed and had to connect the ships to be unfavorable for fire attacks, which is also one of the reasons. When a dynasty is about to perish, it is often impossible to do anything. We cannot blame a certain reason, specifically not much water).

Of course, Li Su knew these causes and consequences. Speaking of these things only proved that he was very confident. A few years ago, when Zhao Yunchu was in Changsha, Li Su arranged to secretly build a ship with Xu Tu Jiangdong's plan, and he had already calculated what battlefield environment his equipment was used for.

Anyway, as long as you don’t go to the downstream of Jianye and fight near the waters at the mouth of the Yangtze River, the stability and seaworthiness of the Five-Tooth Warship are definitely enough, and it is beneficial and harmless to play to your strengths and avoid your weaknesses.

The current political core of the Eastern Wu regime is Jianye, and the war to defeat Jianye will basically end in the future. Therefore, there is no trouble of defeating Jianye and continuing to fight eastward like the Southern Song regime in Dinghuji.

Some people may wonder: Since the Five-Tooth Warship was invented in history by the Sui Dynasty, now that Liu Bei's camp was built more than 400 years ahead of schedule, have they encountered no technical difficulties during the research and development process? Didn't you see how much effort Li Su had spent on this matter before and personally directed the cheating?

But in fact, I didn’t encounter many insurmountable technical difficulties. Li Su still only provided a project establishment idea, and the people below did it - mainly because Liu Bei’s camp has a consistent technical accumulation in this area.

As early as the Battle of Pingba County in 190, after Liu Bei's army captured Gan Ning, and when Liu Mao was in stalemate in Diaoyu City, he invented the "Crow Beak", a springboard equipment that imitated the Roman crow warship.

The crow's beak and the five-tooth warship pole are actually similar, just enlarge the mechanism and strength. The twists and turns in the R&D process are just physical work that can be solved by testing and adjustment, and there are no rational difficulties.

Thick the pole from a thin springboard to a whole tree trunk into a square cross section, which can support the fall of the heavy hammer. The hammer head is also enlarged from a conical hammer that was originally only used to nail the enemy ship to prevent breaking free to a conical hammer of thousands of kilograms.

Of course, during an inspection in 193, Li Su saw a five-tooth warship that was still in the experimental trial stage. Then he found that this kind of rod hammer was still not very good, so he put forward some improvement suggestions and divided the hammer into two categories - the turtle limbs on both sides were still heavy hammered with cone heads, and the bow of the boat was replaced with an axe-blade.

This shape design is naturally inspired by the games such as "Assassin's Creed: Odyssey" and "Roman Total War 2" that Li Su played before traveling through time. Isn't the flagship of Sister Odyssey Rika a typical Greek-Roman-style corner-collision warship, and the corner-collision is a hanging axe blade or adze blade shape. This structure is most suitable for hitting an enemy ship and breaking the opponent.

The ancient Chinese warships were flat heads and had no keels, so they rarely had corners. But now that Li Su had invented the keel structure of the warship in advance, the Han army's five-toothed warship also made frame keels based on traditional building ships, which were strong enough.

Then, by the way, the pole and the impact angle of the bow are merged into a large axe that can not only fix the thorn or fall from the sky, and the axe blade is used to hit it, and the sharp corners at both ends of the axe blade are used to smash it, just to discover the potential of the equipment to the extreme.

Of course, there were still many small twists and turns during subsequent research and development.

For example, at the beginning, the hemp rope for holding the rod was unreasonable, and the total weight ratio of the wooden rod and metal hammer head of the rod was unreasonable.

As a result, after the rod is put down, the hammer head is too heavy and does not hit the enemy ship, the five-tooth warship itself will cause the center of gravity of the five-tooth warship to sway violently from left to right. Even the hammer head falls all the way under the action of gravity and inertia, and finally falls until it hits the side of the ship after swinging for half a circle.

Fortunately, the length of the pole exceeded the height of the ship's side to the bottom, so the hammer head could not hit him. There was no misunderstanding that "the hammer he swung did not hit the enemy, and he swung it back half a circle to kill him." It was just that the pole broke, the side of the ship also cracked slightly, and the hammer head fell into the water and sank to the bottom.

Later, Li Su and Zhuge Liang also studied this problem and gave craftsmen some calculation experience through the physical idea of ​​the "lever principle": to ensure that the reserve buoyancy provided by the wooden pole, multiply the lever moment above, it should be greater than the gravity of the hammer head beyond the buoyancy part, and multiply the lever moment below the impact.

In this way, the pole created later was built. As long as the enemy ship was not photographed but was patted on the water, the slower the speed was underwater. Finally, it was dragged back to the water by the excess reserve buoyancy of the wooden pole. The soldiers who pulled the winch on the warship could snatch the pole again like when seizing the suspension bridge when defending the city, preparing for the next hit.

This process is full of so many physical calculation designs. I am afraid that Zhou Yu will see the principles of the physical objects in the future and will not be able to understand them at the moment. Unless you directly get the original copy, the current situation of Dongwu lacking the quantitative calculation talents in mathematics and physics. Even if you imitate for one or two years, the imitation will be a crooked melon that "can swing a hammer to kill myself."

In addition to the five-tooth warship that beats the stick, Li Su's side does not have more exciting new designs in terms of warships. However, there are many small optimizations in terms of marine combat equipment.

After all, shipbuilding is very slow, and large warships are not laid out one or two years in advance, so there is no sign of shadow. However, the weapons used on the ship can be replaced and iterated in faster cycles.

Since Taishi Ci defeated Zhou Yu in a tentative attack two months ago, Li Su has also combined Zhou Yu's tactical characteristics to temporarily think about some new gadgets, which can be used immediately in the final battle.

——
Chapter completed!