Sonar is not reliable.

The silence performance of submarines in this era is not very good, and it is impossible to reach the level of the kind of ocean black hole in later generations, not to mention pump jet propulsion, and the basic seven-bladed large sideways propeller cannot be manufactured, so there must be noise.

But in comparison, the performance of sonar is also backward, lacking advanced electronic technology, the sound range that sonar can hear is very small, and it also lacks the means of analysis and processing, so it is normal for sonar to not hear the noise of submarines.

At this time, it is important to have more lookouts and carefully search the sea surface, in case the lookouts can find the snorkel and periscope on the sea surface?

This is the same as setting up observation posts for air defense early warning.

In fact, if there is a mature sea search radar, it is best to use a periscope to scan the sea surface, but unfortunately, with the same technical problem, as long as the wind and waves are slightly stronger, it will not be able to filter out clutter on the sea surface.

It is still most accurate to use the naked eye.

With such thoughts, the sailor Clitis carefully observed the sea, little by little, little by little, and finally, on the sparkling sea, he seemed to find something.

He quickly adjusted his telescope, magnified it, magnified it again, and when the eyepiece was clearly imaged, he finally exclaimed: "Thirty degrees to the port side, five nautical miles away, a suspicious target has been found, it may be a submarine periscope!" ”

His voice was like a thunderclap on a sunny day, and the entire formation was instantly alarmed.

Countless binoculars looked in the direction he indicated, searching the sea, and at the same time, in the middle of the formation, a destroyer was at full speed and met it, and the deep bomb launcher in the tail was ready.

However, nothing.

"Critis, are you mistaken?" The captain stood in his place, and likewise looked at the sea with a telescope, but found nothing, so he couldn't help frowning.

"No, I see it clearly." "There must be submarines, there must be submarines!" ”

He was convinced that he was not mistaken.

"Well, it seems that you have been too nervous lately, you can go back to the cabin to rest, get a good night's sleep, and come back to duty tomorrow." The captain said, "Come here again." ”

Is it really that I am too nervous? Clitis shook his head helplessly and walked in the direction of the cabin.

On this ship, the most important equipment was transported, and it was said that the anti-tank weapons that were urgently needed at the front line, and there must be no room for error, and they were indeed the most stressed in the entire fleet.

"If the submarines of the Germans appeared, they would definitely attack us." The captain said: "There is nothing to make a fuss about. ”

Unbeknownst to them, they had made a serious mistake.

Underwater.

"It was so thrilling just now that I could almost see the sailor looking at us through the periscope." On the U-107, Deputy Captain Ruth said, "So I was quick and quickly put down the periscope." ”

"Actually, if we just started, we could have taken out a few cargo ships." Another first mate said.

Heisler shook his head: "We can't do it just now, we can't eat so many cargo ships on our own, we have to kill all the cargo ships at once, like wolves, now, we will follow their fleet while waiting for our companions to arrive." Now, launch the AIP system. ”

If it is an ordinary submarine, it is no problem to keep up with the cargo ship on the surface, after all, the speed of the cargo ship is quite low, but it cannot be tracked for a long time, because the power of the submarine's battery is quite limited, and after a period of time, it has to float to recharge.

And now, the submarines after the U-100 are all AIP submarines with Stirling engines, which can sail at low speeds for a long time and keep up with their surface cargo ships, no problem at all!

The propeller at the tail of U-107 rotated, gently stirring the seawater, and the noise made by the submarine was almost inaudible after it spread to the cargo ship formation, and after the cargo ship formation left, it followed behind again, which suddenly made the people on the submarine even more strange.

"It's already past Attu Island, they haven't turned around yet, what do these cargo ships want to do?" Ruth couldn't help but ask.

"I think they're going to change their route and transport the goods directly to the Far East." Heisler made such a judgment, and after saying this, everyone present was happy: "In other words, in the future, as long as we are near the base, we can hunt and kill the transport ships of the Soviets?" ”

At the beginning, there was only one nuclear submarine, which could only roam the Arctic route, so the Soviets simply went to the Far East to engage in transportation, and now, Germany has established a nuclear submarine base on the four northern islands of Hokkaido, and the Soviets did not realize that it was simply stupid to design the route in this way.

It's a pity that the submarines patrolling in the Bering Sea are all empty, but fortunately, there are a few submarines behind them, which can be intercepted head-on as soon as possible.

The day passed.

For the sailors of the Soviet Union, every day was like a year, and every day that passed, they breathed a long sigh of relief and lived one more day.

By the time the sun rose again over the sea in the east, the entire fleet could already see the Kamchatka Peninsula on the starboard side.

The Soviets are near.

"How's it going, did you sleep well last night?" When Clitis stood again on the lookout set up on the side of the ship, a voice rang out in his ears.

"It's okay, it looks like I must have been dazzled yesterday." Clitis said.

If you had seen the German submarine yesterday, it would have been attacked yesterday, and as a result, it has been calm until now.

He must have been dazzled, causing everyone to be nervous for more than an hour, and now, Clitis is quite guilty.

"It's okay, boy, do a good job." The captain patted him on the shoulder: "Everyone's maturity requires a process, don't be pressured, and keep working." ”

The captain returned to his captain's chamber, and Cridis, with his eyes on the binoculars, began to observe again.

What is that?

Clitis rubbed his eyes and looked again.

Exactly the same as yesterday.

The sparkling sea is shaking, and on this sea, a thin cylinder-like thing half a meter high appears, this thing is churning with the waves but is as steady as Mount Tai, isn't this a periscope?

No, I must have been dazzled.

Clitis didn't believe he had this luck, and swept it in one sweep? In that case, he would have become God's chosen man to warn the entire fleet.

Let's look at the other sea.

When he turned the telescope more than ten degrees and searched again, he adjusted the focus, and his field of vision became clearer, and it was still exactly the same scene!