After several months of work day and night, the platform of the building ship was finally repaired and renovated and was ready to go into the water to sail. Next, these five warships were driven to the original catapult base in Sanjiangkou, and a new round of assembly began in a tightly sealed environment.

The assembly task of this part is to assemble the chain catapult on the deck of the warship. While the tower ship is repaired, these chain catapults have been secretly manufactured. Even before the restoration and modification of the tower ship is completed, these catapults have been built. Therefore, as soon as the warship enters the port, the assembly of the catapult can be carried out immediately. It was successfully completed in just over ten days, and the catapults ship is finally completed.

A few months ago, Cao Liang had already received a report on the battle situation on Pengze Lake. Due to the Eastern Aid of the Wuchang Navy, the Battle of Chaisang was not going smoothly. At present, Wang Jun still had no chance to defeat the Wu Navy. The Battle of Pengze Lake was in a deadlock.

However, all this was expected by Cao Liang. After all, with the strength of the Wei Navy, if he confronted the main force of the Wu Navy, he would not have much confidence in winning. This is also the main reason why Cao Liangli mainly built a series of stone-capping ships.

If we want to pacify Jingzhou and completely eliminate the remnants of Wu, the Wei army must have an overwhelming advantage in the navy, so that we can have a chance to take over Jingzhou. In ordinary water battles, the Wu army has a clear advantage in experience and combat effectiveness. It is almost impossible for the Wei army to defeat the Wu army with conventional tactics.

If you want to win this water battle, you must use unconventional methods. Cao Liang is already prepared in this regard. The serial casting ship was tailor-made by Cao Liang for the water battle in Pengze Lake. It will inevitably become a sharp blade that destroys the last resistance of the Wu people.

The battle in Pengze Lake was not good, and Cao Liang had ordered Wang Jun to remain calm. He was preparing to go to Chaisang in person and take these five modified catapult ships to help Wang Jun with his help.

However, before this, Cao Liang still needed to train a series of catapults, and a large number of catapults were operating catapults on the water for the first time. This was completely different from operating on land, so they had to have time to practice and reach the level of proficiency before they could devote themselves to actual combat.

However, during the training, Cao Liang discovered a problem, that is, the destructive power of the stone bomb is insufficient. The biggest advantage of the chain catapult car is that it can continuously launch stone bombs, with a large attack density and a wide coverage. However, since the stone bombs used in chain catapult car are relatively small, the destructive power is far inferior to that of ordinary catapult car.

The stone bullets equipped with ordinary stone catapults are of average size and weigh about 100 kilograms. They can also use grinding stone bullets weighing more than 200 kilograms, but the range is relatively close and the power is quite amazing.

The stone bombs used in the serial flying stone car are only about 50 kilograms, which is at least one circle smaller than ordinary stone bombs. This is also a stone bomb that matches the range. If you want to reach the minimum range requirement of one thousand steps, the stone bombs used in the serial flying stone car can only use the 50 kilograms level.

The lighter the stone bullet, the longer the range, but the less powerful it will destroy, so you cannot have both fish and bear's paw. Therefore, under the premise of ensuring the range, the weight of this stone bullet can only be so large, and there is no choice.

However, through experiments, it was found that it was difficult to destroy a large warship, especially a building ship, with a fifty-jin stone bomb. It is very likely that dozens of stone bombs can only destroy the cabin of the warship at most, and it is impossible to truly sink the enemy warship.

Moreover, on the bumpy river and lake surface, the hit accuracy of the catapult car is far lower than that on land. That is to say, on land, the catapult car can hit about four per ten stone bombs fired on average, while on water, it is likely that less than two can be made up for such a low hit rate. Therefore, these marine catapult car can only use chain catapult car with higher firing rates, and cannot use catapult car with high power but slow firing rates.

This repeated choice made Cao Liang very troubled. The range and destructive power were inversely proportional. If one condition was met, he had to give up the other condition. The two were very embarrassed. It was indeed difficult to have both fish and bear's paws.

At this time, Huan Fan proposed a solution. The best attack method on the water is fire attack. When Zhou Yu burned Chibi, he used the fire attack strategy to destroy Cao Cao's fleet in one fell swoop. If the stone bullet was replaced with a fierce oil tank, would the attack efficiency be greatly improved? Moreover, in terms of weight, the fierce oil tank was much lighter than the stone bullet, which could ensure a longer range.

Cao Liang did consider the suggestion made by Huan Fan. In the past use of stone casting cars, the Wei army threw not only stone bullets, but also overloaded oil cans and fuse balls, so Huan Fan's proposal was not particularly novel.

However, the Wei army used the use of fierce oil fired tanks in the past. In terms of power alone, the fierce oil fired tank has great lethality. However, this thing can hurt the enemy and also hurt oneself. Once the operation is wrong, spilling out the oil from the fierce oil fired tanks, which can easily cause damage to one's positions and personnel.

Therefore, the use of fierce oil fired tanks is not very popular, and they will only be used in occasions that must be used. Wei Jun was also very careful when using them, afraid of accidents.

Moreover, on land, even if the oil inside falls or the fire tank is broken as a whole, the damage caused is only partial. If a mistake occurs on the warship, it can be said to be fatal. The fire that is ignited may cause devastating damage to the ship.

So Cao Liang was still cautious about this proposal, but Cao Liang quickly thought that if the fierce oil tank was changed to a sealed shape, would it be better?

Cao Liang has a strong hands-on ability. He quickly designed a spherical porcelain, so he did not use less expensive pottery. The main reason is that the pottery is fragile and the porcelain is relatively strong. It is possible to burn these spherical porcelains in the nearby porcelain kiln. It doesn’t matter whether the shape of the utensil looks good or not. What is important is that there is no trachoma and cracks.

The oil used in the hot oil canister was packed into spherical porcelain and sealed with clay, so that the sealed hot oil canister was released.

The shell of such a fierce oil tank is relatively hard and will only break after hitting the enemy ship, greatly increasing the probability of safe use on the warship.
Chapter completed!