The narrow river surface of the Yongjiang River is relatively narrow. In fact, for a river, the river surface of the Yongjiang River is still very wide. After all, this Yongjiang River is the main road that Ningbo City directly connects the sea. Ningbo is a commercial city with developed sea trade. If the Yongjiang River is a small river, how can the passing sea ships come and go?

Lan Yanzhen never thought of relying on his power to capture Ningbo, but as long as he can shell Ningbo City and bring some damage to the opponent, it would be enough for Lan Yanzhen. The significance of shelling Ningbo is far higher than killing a small fleet of Ming army. This is also the main reason why Lan Yanzhen noticed that the Ming army's fortress deliberately set off the battleships in front into the river and adopted the strategy of using the large fleet to attract the opponent's targets to take risks.

The losses of the fifteen ships were enough to bear for the joint fleet, not to mention that there were only three real warships. The deal was of course cost-effective to exchange these losses for shelling Ningbo. When the dull sound of cannons came from the south, Lan Yanzhen couldn't help but smile.

"Control the speed of the ship and prepare to receive it!" Although the fifteen ships that entered could eventually escape, or all of them were broken into the river, the necessary response was still necessary. At this time, the Ming army also reacted, understood Lan Yanzhen's intention, and began to launch artillery bombardment at the Qing army's vanguard warship that was about to approach Ningbo.

In later generations, that is, during World War I and World War II, the accuracy of naval artillery bombardment was not high. Even if technology advances later and has a more developed electric aiming system, the accuracy rate will not be able to reach 100% chances.

In ordinary naval battles, artillery can only cover a general range, similar to musket shooting, which is not direct aiming but uses the number of barrage barrages to kill the enemy. Therefore, volleys in naval battles are the most commonly used method. If you just shoot me and I will shoot you back and kill you. Perhaps two warships that are separated by a certain distance will not be damaged for a long time, but they are just a lively fight.

As for the shooting of the turret, it must be much more accurate. Firstly, it is because the turret is not like a warship floating on the sea. As the waves fluctuate, the cannons fixed on the turret are stationary, and environmental factors are not needed to be considered when firing. Secondly, as this kind of river defense turret, the Ming army, or Zhu Yicheng, sent people in advance to calculate the various sections of the Yongjiang River, cut the area according to the location of the river surface, and then divide a specific area, and then the cannon range, strength, etc. of the turret are finally determined according to these areas. As long as the other party enters, the commander of the turret cannon cannons can conduct more accurate artillery bombardment according to the pre-divided area position.

But even so, this kind of artillery can not meet the requirements of hitting wherever you want. When industrial weapons and equipment are not completed, the cannon shells, gunpowder used, wind direction, ship speed, etc. will affect its accuracy. Therefore, when the Ming army reacted and prepared to kill these Qing warships that were about to approach Ningbo as soon as possible, artillery fire broke out from each of the artillery batteries for a time, and countless shells flew towards the target according to the predetermined position. However, after three rounds, only two of the fifteen Qing warships were hit, one of them sunk on the spot, and the other one was seriously injured. As for the other twelve warships, they continued to move forward.

"My grandma! Fire up and aim for me!" The commander of Fort No. 6, which is only seven or eight miles away from Ningbo City, shouted in a hurry, and sweat beads appeared on Da Leng Tian's head.

In fact, the cannon sounds heard by Boss Lu and Lan Yanzhen were not the sounds of the Qing army's artillery bombardment of Ningbo, but the cannons he fired. Most of the ships that the Qing army entered the river were fast ships. After entering the river, they were not fast at the beginning. In addition, they were going upstream. In addition, the previous several artillery batteries had already received news from Boss Lu, for fear of killing these warships in one breath and scaring away the Qing army navy that had not yet entered.

Therefore, they did not fight seriously, and some of the turrets were too lazy to even fire the cannons. They just let them go inside. But who would have thought that when they were about ten miles away from Ningbo, these warships suddenly accelerated. At this moment, the commanders of the various turrets suddenly felt something was wrong. When they reacted, the warships were not far from Ningbo.

However, it took a long time for cannons to be reloaded and fired in this era, especially the cannons used by the turrets. Cannons are also called the Red Cannons. Their characteristics are that they are powerful and have a long range, but they are cumbersome to operate. It is good to have one shot in three minutes during training. Even if each turret uses primary mechanical auxiliary devices, the fastest can only be used in two or more pieces, which is even slower in wartime.

In two minutes, the warships on the river surface were enough to travel a good distance. Moreover, although the cannons were improved by Ningbo craftsmen, their effective range was only about five miles. Once this distance was exceeded, their accuracy was even lower.

"Xipi, I'm hurt by Boss Lu. Why are you still standing stupidly? Cooling up the cannons, and you're going to beat me!" The commander whispered on his head, and the commander shouted and cursed. Everyone in the fort was also anxious. Everyone knew what would happen if they were shelled by the Qing army's warships. Although there were still artillery defense outside Ningbo, don't forget that this was Ningbo's last line of defense. Ningbo was shelled by the Qing army, which would not only cause panic in Ningbo, but also those who were stationed in the Yongjiang Fortress could not escape their guilt.

"Quick! Hurry up! Hurry up!" On the river surface, the commander of the Qing army's small fleet was also shouting desperately, urging him to sit down the warship and speed up. The warships were also desperately moving forward and the constantly falling shells. The warship's gun range was limited, and it could hit more than two miles at the farthest. The Grand Marshal Lan said it very clearly. No matter what, he had to approach Ningbo City and get a few shots for Ningbo, but now he is still several miles away from Ningbo City. If he wants to achieve his goal, he must rush in.

"Sir, look!" Suddenly, there was a scream next to him. The commander quickly turned his head and saw that a warship not far behind him was hit by a ten-pound cannon. The small warship was broken into two pieces. The bodies of several sailors and the thrown fragments flew into the sky. The surviving sailors were running towards the slightly better hull, but he knew that the warship was no longer saved, and the sailors who were still alive would fall into the river immediately. As a result, they either barely swam ashore and became prisoners, or they were frozen to death in the river in this weather.
Chapter completed!