Collect supplies, seize aircraft carriers, and travel to the seventh and fifth

When Mo'er heard that the battalion commander wanted to see what the situation was like underwater, he turned back to look at everyone. Seeing that everyone nodded, he nodded, turned on the water injection switch, and seawater was injected, and the submarine slowly sank.

Commander Feng said, "Comrade Li Moer, tell us about the principle of submarine diving."

Moer said, "The working principle of a submarine is actually very simple. Submarine inventors were inspired by fish and discovered that fish use their swim bladders to control their sinking and buoyancy." "A fish's buoyancy in water is the product of the volume of seawater displaced by its body and the specific gravity of the seawater, and the specific gravity of the seawater changes with changes in water pressure." "The deeper the ocean, the greater the pressure and specific gravity of the seawater. To adapt to these changes, the swim bladder regulates the fish's specific gravity." "When a fish wants to float, its swim bladder expands, increasing its volume and reducing its specific gravity accordingly. When the fish's specific gravity is less than that of seawater, the fish surfaces." "When the swim bladder compresses, its volume decreases, and the fish's specific gravity increases accordingly. When the fish's specific gravity becomes greater than that of seawater, the fish dives. When the fish's specific gravity is equal to that of seawater, the fish stays submerged."

"The principle of a submarine is to change its own weight. Submarines have multiple water tanks." "When a submarine wants to dive, water is added to the tanks, increasing the submarine's weight to exceed its displacement, causing the submarine to dive." "Displacement is achieved by compressed air. Once submerged, the volume of water displaced does not change, and the buoyancy it experiences remains constant. Controlling its diving depth is achieved by changing the amount of water in the tanks." "When the amount of water in the tanks remains constant, the submarine will remain suspended at a certain depth underwater instead of sinking."

Everyone nodded in sudden realization. So that's how it is. Learn something new!

Because the submarine had no windows, everyone couldn't see what was happening underwater. All they could see on the screen was a depth of 25 meters.

When they arrived at the port, Moer pressed the drain button, and the submarine slowly rose to the surface. After that, he opened the hatch, and everyone got out of the submarine one by one.

When they got ashore, everyone exclaimed that this big guy was really a good thing. It lurked quietly under the water like an assassin hiding in the dark, making it impossible to guard against it.

After landing, we boarded the cruiser and toured it for a while, praising it profusely. However, without a satellite positioning system, many functions were unusable!

The commander found Moer and asked her, "Comrade Li Moer, are you willing to command a submarine? I see that you are very familiar with many of the functions of a submarine."

Mo Er shook his head like a rattle and said, "Commander, I don't like staying in a submarine all day, hiding underwater. It would make me depressed and drive me crazy. I still prefer to sail freely on the sea."

Commander Feng said, "Since you're unwilling, I'll have to find another qualified submarine commander. I wonder if Zhao Yunting is willing?"

Mo Er said, "I don't think he's willing to do that either. Commander, it's best to find someone else!"

Commander Feng said: "Although you are reluctant to command the submarine, if I send someone over, you must teach them everything you know."

Mo'er said, "This is my unshirkable responsibility. Please rest assured, Commander. I will teach him everything I know!"