The sudden tension may not be a good thing. After a period of purposeless drifting, everyone was physically and mentally exhausted.

Now that there are enemies that have not yet confronted each other, everyone has goals and begins to prepare for war in an organized manner.

Compared with the unfortunate wreckage of the ark, Lu Yu's ark is completely built with high-performance materials, which is the ultimate Lu Yu can achieve in terms of structural strength and other passive defense performance.

However, to improve the survival efficiency of the Ark, it is necessary to make up for the shortcomings of the Ark.

On the one hand, the weapons and equipment of the Ark are weak and must be strengthened.

On the other hand, the power of the Ark is also a bit weak. The advantage of the power device dismantled from the freighter is that it is more economical and fuel-efficient.

However, the disadvantages are also obvious. Insufficients in acceleration performance, extreme state, output torque, etc. have caused the ark to lack maneuverability.

So Lu Yu has to work on two things now. One is to create appropriate weapons to improve the attack ability of the ark, and the other is to find a way to improve the ark's power performance.

However, things have to be done one by one. In terms of difficulty, Lu Yu decided to make weapons and equipment first.

There is a lot of knowledge available in your mind, but to be implemented, it needs to be tested in operation.

What the Ark is short of is powerful weapons, and there seems to be many choices, but only artillery and rockets can be used the fastest.

Lu Yu is the least difficult to manufacture these two weapons, and the training cost and technology cost to be invested in actual combat are also much lower.

Whether it is a good thing like a rocket that comes from the sky, or the romance of a large ship and a giant cannon, one thing has to be considered, that is, the ark used more than 80% of its load when it set sail.

It is probably difficult to directly change the structure of the ark at sea, so the tonnage that can be used to add weapons is really small.

After his calculations, if the material strength of the enemy's ark is close to its own high-performance material, at least a 256mm caliber long-barrel cannon is required to break through the ark armor within ten kilometers.

Even if such a naval gun does not consider the ammunition supply device or build a turret, the naval gun itself is extremely heavy.

With the weight of the ammunition, the space required for the naval gun to rotate and move, I am afraid that the entire ark will not be equipped with several large-caliber naval guns.

The hit rate of the artillery also needs to be combined with excellent fire control radar. Although Lu Yu has knowledge in his mind, he cannot guarantee the smooth manufacturing and put into use.

Relatively speaking, rockets seem to be much more convenient.

Rockets can be large or small. Large rockets have a higher range and can change their power and characteristics by changing the charge of the warhead.

Small rockets can be mounted on seaplanes and helicopters to make up for the current lack of force in seaplanes and helicopters.

And relatively speaking, rockets can more conveniently fire many pieces at the same time when used. When performing saturation attacks, their accuracy requirements are much lower than those of shells, and they are easier to form good combat effectiveness.

Lu Yu also has many ideas, such as manufacturing torpedoes to prevent underwater threats, and whether it can further manufacture missiles?

But now the important thing is to first form effective combat power. After all, the remains of the Ark remind everyone here that they may encounter such a terrible enemy at some point.

So Lu Yu began to knock and beat, and used his wonderful hands to create rockets on the remains of the ark.

When Lu Yu was busy, the others were not idle either.

The motor team installed two engines on the remains to slow the remains from the ark. However, the engine was removed from the old yacht. With limited power, they had to use sails and other means to slow down the remains.

The ark is above, without sufficient force, everyone can only improve the ark's survival ability within their ability.

The original various combat plans have begun to be sorted out again, especially in response to the terrifying consequences of the incendiary bombs that have been seen, the Ark has begun to carry out a lot of fire prevention, cooling and evacuation training.

Because Lu Yu told everyone that although the hull of the ark can defend against powerful shells and explosions, it cannot isolate the high temperature caused by incendiary bombs.

The technicians on the ark also began to sort out and improve the ventilation and fire protection facilities in the ark.

The first batch of rockets made by Lu Yu were silly, big, black and thick. Each rocket was about 1.8 meters long, with a bowl size. After the charge was completed, it had a range of more than 30 kilometers. The warheads had high-explosive warheads equipped with strong explosives and armor-piercing warheads using high-performance materials.

The first batch of rockets were made fifty, and the simple rocket launcher used could carry twelve at a time.

The motor squad's speedboat can only transport two rockets to the ark at a time. In order to improve transportation efficiency, Lu Yu built another transport boat body, which can carry several tons of cargo and then be pulled back to the ark by the speedboat.

The first batch of rockets were transported back to the ark and installed by the technicians on the ark according to the instructions written by Lu Yu.

Now that things are urgent, Lu Yu's efficiency is equivalent to a factory, so he naturally has to do a big deal to meet the basic use.

But the technicians on the ark will eventually be trained, otherwise Lu Yu will leave the dungeon in the future. Wouldn't these survivors who survived because of him be unable to fight with other survivors and eventually become fish that can be slaughtered?

Technical personnel who already had certain abilities were sent to the remains of the ark, and Lu Yu began to teach them rocket manufacturing techniques.

Lu Yu's professor really started from scratch and started teaching directly from smelting steel.

So Lu Yu first led everyone to build a concentrated steel workshop from scratch on the remains of the ark. In order to facilitate the introduction of the ark, the workshop also created a floating platform to carry it.

Starting from a small steelmaking furnace, Lu Yu first taught you how to resmel the dismantled scrap steel.

Then, from the beginning of smelting, a steel workshop assembly line can be established that can process various marks and forms of steel.

This not only requires teaching them actual operations, but also explaining basic theoretical knowledge to them.

Since most of these skilled workers have an educational level of only elementary school or above, they still make up for it on the Ark during this period.

Lu Yu had to turn some advanced theories into experience to ensure that they can operate and use them first. As for whether the theoretical knowledge can be preserved in the future, he can only hope that the Ark crew can learn as much cultural knowledge as possible.

In this way, the progress will definitely not be fast. Time passes day by day, and fortunately, I have not encountered any attack from the enemy.

Lu Yu also enjoyed all this. Those who have been experiencing the end of the world for many years must learn the awareness of making happiness in suffering.

———
Chapter completed!