The next morning, Mu Feng dispatched a group of construction robots and began to strengthen the underwater defense of the port area.

First of all, a special sea-searching radar should be added to the missile launch platform at the entrance of the strait, and efforts should be made to discover the surface submarine or the submarine's periscope in the distance at the first time, which is the first layer of defense.

Then, the original anti-submarine nets at the entrance to the bay in the port area were repaired, upgraded, and expanded, and anti-submarine nets were also installed at the two entrances of the strait, which was the second layer of spinning wire.

Finally, a large number of sonar buoys and semi-fixed sonar are put into the port area, and the entrance to the bay and the strait are evenly spread out to form a multi-layer array, which is the third layer of defense.

Later, when we have more time and energy, we will carry out some special scientific research programs to make sonar arrays fixed to the bottom of the water, and spread them around the two islands where the First Military Port is located.

Mu Feng assigned the construction task to the robots, and went to renovate the Lanzhou.

Lanzhou is the No. 1 ship of Type 052C, which is the same level ship as Changchun, and the hull is exactly the same, but because of different batches, there are slight differences in the specific equipment installed on the ship.

Mufeng's transformation of Lanzhou is directly applied to the plan after the second transformation of Changchun.

The first is to start the all-electric reform, compress the cabin, replace the new gas turbine, and then replace the new universal vertical launch system, increase the number of vertical launchers to 96 units, and then upgrade the close defense system, two groups of 730, one group for 1130, one group for Hongqi 10 close defense missiles, and finally adjust the size of the hangar, adjust the hull line to adapt to the high speed of 35 knots.

This renovation is equivalent to merging two transformations in Changchun into one, and in the end a total of 5,000 units of resources were spent.

Mu Feng guarded Lanzhou in the room after the transformation, went out together, and prepared to go to the strait to test the voyage, but met Nanchang, Peace Ark, Hulun, Yiwu, and a few 22 at the dock, and this group of people just came back from the sea together.

They also carried three large iron cages more than two meters long, each containing a seal, which looked quite innocent and whined from time to time.

Mu Feng was a little confused: "Nanchang, what are you doing catching seals?" Can you eat seal meat? ”

Nanchang laughed: "Commander, it's not food, isn't it the research of 'letting humans use resources' recently, we are going to find some large mammals to experiment, but we have not found any suitable targets on the nearby islands, and in the end Neptune thought that there are seals in the water, and seals are also mammals, so we went to catch seals." ”

Mu Feng blinked his eyes and recalled the relevant information, according to past experience, human beings directly eat resources, that is, vomit and diarrhea and then empty for a few days, it is basically not fatal.

So Mu Feng clasped his hands together and bowed slightly to the three seals:

"Brother Leopard, Sister Leopard, thank you very much for your willingness to sacrifice yourself for this experiment, you should not be in any danger, if there is any long, two short, I will bury you."

Mu Feng said goodbye to the seals and Nanchang, and followed Lanzhou to the sea trial.

The Lanzhou ran in the strait all morning, first familiarizing itself with the new hull performance, and then testing the new equipment and weapons on the ship to confirm that it could operate normally.

Mu Feng stood on the bridge, looking at the sea and the horizon in the distance, recalling the research of Neptune and the seal captured by Nanchang, an idea that had been suppressed for a long time resurfaced.

Mu Feng always had an idea in his heart, wanting to go to the other side of the planet to take a look after all the deep-sea crises here were resolved.

In the archipelago where I am currently located, there are the headquarters of England, France, Italy, and Germany, which seems to belong to the European territory.

According to information from the Royal Navy, there are other commands in the far distance, and that should be on the other side of the planet.

The USN and IJN have been confirmed, but Hood has not mentioned whether there are other small commands, whether there are any Huaxia headquarters.

Mu Feng wants to explore other places on this planet, wants to look for it, wants to see where the orientals of this world live.

But in this world of ocean archipelagos, after leaving the archipelago where it is now, it may not be possible to find a large-scale land for tens of thousands of kilometers.

Exploring the unknown oceans, replenishment is the biggest problem.

The resources used by the ship girls are very easy to carry, 1 cubic meter is 200,000 units, and the cabin of a battleship can hold tens of millions of no problem.

And you can use ordinary steel to build a mobile offshore platform, equipped with resource gathering facilities, and tow it with warships, so that the ship girls have almost unlimited endurance.

And as a human being, you can only eat ordinary human food, so you can only rely on refrigeration.

The refrigeration time of food is also limited, especially for vegetables, which are relatively short, and many of them are only one month.

If your fleet explores too far in the deep sea, you don't have enough food reserves, and you can't find large islands to replenish it.

If resources can also replenish their energy, they are really completely fearless.

But this matter is not in a hurry, so we can only wait slowly, and whether it can succeed is another matter.

When he returned to the restaurant to eat at noon, Mu Feng saw the Peace Ark, Hulun, and Neptune again, so he couldn't help but ask:

"What tests did you do in the morning? What about seals? ”

Neptune said while eating: "At present, it seems that seals cannot directly absorb the primordial matter and energy, whether it is diluted a hundred times, ten thousand times, or a million times, as long as it is taken, it will cause cramps in the digestive tract, and it will not end until it is drained."

"We are now in the process of converting the supplies and energy into an ionic state, and then performing a meridian injection test, and as of lunch, the seals have not had internal spasms, but have entered a state of mental mania, and are still unable to absorb the energy, and we are going to observe for a while."

"Oh, that's right." Mu Feng nodded noncommittally, "If there is any new progress in the future, remember to inform me as soon as possible." ”

"No problem!" Neptune casually agreed.

In the next few days, Neptune continued to develop new experimental protocols, Hulun, Peace Ark, Nanchang, and occasionally Yiwu and 22 to carry out various tests on seals.

The first three seals were so tossed that they built a separate pool for them to recuperate in while they caught new seals to continue testing.

At the same time, Mu Feng commanded the construction of robots, and the sonar arrays at the entrance of the port area and the entrance to the strait of the First Military Port were laid one after another.

On the side of the Pachina Fortress, under the command of Liaoning, the airport runway and hangar have gradually resumed work, and Mu Feng released the J-15 fighter jet to the past.

Although the three airfields in the fortified area are large, the level does not seem to be high enough, World War II propeller aircraft can operate 900 aircraft, but the J-15 can only operate 96 aircraft.

The deep-sea fleet managed by Crimson, after the wreckage in their bodies was deleted, the overall level of wisdom directly increased to a higher level.

With sufficient resources and the presence of Crimson as a guide, the education and training work went quite smoothly, and they had a basic sense of identity with the headquarters.

The mass production of construction robots in the fortress area began to gradually upgrade the resource gathering facilities and manufacturing equipment to fully automatic models.

On the side of the Italian Command, Veneto's prestige, combined with the suppression of force, coupled with the help of building robots, quickly restored the resource output of the entire headquarters, and also allowed Veneto to completely control the situation, and the other factions could no longer make any big waves.

On the part of the Royal Navy, also because of the help of the construction robots, a large number of collection facilities have resumed work one after another, with resource output, and the harassment of the deep sea has basically stopped, and the internal mood has gradually stabilized.

The only problem is that Cavour still hasn't been caught, as if the world has evaporated.