As for the issue of artillery shells, to be honest, it is a little inappropriate to put it here, because everyone knows that the attack methods of submarines are torpedoes and missiles.

Depending on the type of torpedoes and missiles, the lethality is different. For example, take the Ohio-class nuclear submarine.

The missile it carries is not an ordinary missile, it is a missile called a 'Trident', which is said to be capable of carrying only one Ohio-class nuclear submarine.

It can destroy the mass killers of most countries in the world. Of course, the premise is that the missile needs to be equipped with that kind of mushroom egg warhead.

At present, it seems that the People's Army does not have mushroom eggs, so the Ohio-class's current main offensive method is various torpedoes.

Therefore, for the sake of convenience, the system refers to Ohio-class torpedoes and missiles as artillery shells, which means that the production plant treats them equally when producing corresponding artillery shells.

What is equal treatment? To put it simply, among the fifty rounds of artillery shells produced, twenty-five of them were torpedoes of various types, and twenty-five of them were missiles of various types.

Therefore, the reason why it is called an artillery shell is just for convenience. When the People's Army has its own mushroom eggs in the future, this artillery shell will be subdivided.

They will no longer be uniformly called cannonballs, but can arbitrarily change their production proportions according to their own ideas.

For example, for every fifty rounds of artillery shells produced, twenty-five of them are missiles of their respective types, but this ratio can be changed at will according to Su Yu's ideas.

To put it simply, if Su Yu wants all the fifty rounds of artillery shells in this production plant to produce missiles like the Trident in the future, it is okay.

Then there are no torpedoes, so the name of this shell is just for convenience and has no other meaning.

Based on the current situation, it seems that our own Ohio-class nuclear submarines do not need to produce missiles like the Trident, but only the corresponding torpedoes.

After you have mushroom eggs in the future, you can get missiles like the 'Trident'. It is completely unnecessary at this stage.

.............

After purchasing the Ohio-class nuclear submarine, the next step is to upgrade its production plant. Although this Ohio-class nuclear submarine is very powerful.

Logically speaking, just a few ships can defeat the whole world, but as Su Yu who once had a severe phobia of insufficient firepower.

No matter how strong the performance of the Ohio class is, it doesn't matter. With him, no matter how strong you are, you must be strong in numbers.

Thinking of this, Su Yu no longer hesitated and spoke to the system.

"System, open the production plant upgrade card product in the mall."

"Ding~ The mall is opening, the opening is complete."

First level mall:

'An ordinary production plant upgrade card: you can upgrade the level of any production plant from elementary to intermediate, and the price is 3,000 RMB points.'

‘A high-quality production plant upgrade card: you can upgrade the level of any production plant from intermediate to advanced, priced at 10,000 RMB points.’

‘A perfect production plant upgrade card: you can upgrade the level of any production plant from high-level to top-level, priced at 50,000 RMB points.’

"System, purchase an ordinary production plant upgrade card and a high-quality production plant upgrade card."

Seeing this mall panel, Su Yu spoke without hesitation.

"Ding~ The purchase was successful, a total of 13,000 people points were spent, and the relevant production plants have been placed in the system backpack."

After doing all this, Su Yu placed the Ohio-class production plant near the Iowa-class battleship. At this point, the two major weapons of the navy have been installed.

"Ding~ It has been detected that the host has completed the installation of the Ohio-class nuclear submarine production plant, and now has its attached parts production plant."

"This parts production plant can manufacture parts and fuel related to Ohio-class nuclear submarines, etc., and also provides free return to the factory for maintenance."

"The price is only 80,000 RMB points. Will the host buy it?"

"Buy!"

"Ding~ The purchase was successful and the relevant production plant has been placed in the system space."

The next moment, Su Yu took out the attached parts production plant and placed it near the Ohio-class nuclear submarine production plant.
Chapter completed!