German submarines have always been in top secret.

When the submarine is in the base, it is always in the cave warehouse, and no one will see it. When the submarine sets out or returns, it either goes to the cave warehouse at night or submersible.

As for the ocean, unless it is absolutely safe, they are in a snorkel state. Therefore, until now, the outside world has no idea about the shape of the German submarine. It has long abandoned the hull-like structure that focuses on surface navigation and changed to the shape of elongated water droplets that adapt to underwater navigation.

At the same time, the snorkel used by German submarines is also a huge secret and has not been known to the outside world.

In addition to Germany, submarines from other countries are also the most ordinary diesel-electric submarines.

When sailing on the water, use diesel engines to power the submarine and also charge the battery. After reaching the water, you can only rely entirely on the battery.

Therefore, Soviet submarines were in a floating state like ordinary surface ships most of the time. They only dive when they attack and exit after discovering prey. This is also a common combat plan for submarines in this era.

At this time, the m-98 submarine was floating in the water surface, with two diesel engines rumbling, and the submarine's command tower and the lookout post were looking at the sea in the distance.

The Soviet Navy couldn't wait to replicate the German tactics, ambush the German fleet at sea, and avenge their Black Sea fleet, but now they find themselves facing difficult problems.

For example, how to find the enemy's fleet?

It is not easy to discover the goal in the vast ocean, especially at night, which is even more difficult.

The German tactics cannot be replicated. German submarines beat the Soviet Black Sea Fleet, which was at the doorstep of the Black Sea Fleet. At that time, they were all anchored in the port, but they were ambushed after leaving the port.

Germany was able to arrange ambush by intercepting Soviet intelligence in advance. At the same time, German submarines had advanced sonar equipment to detect their whereabouts.

But the Soviets couldn't do it.

The German fleet sailed on the Black Sea. It was difficult to find the German fleet in such a large area. They did not have any intelligence support and could only rely on themselves.

Although there is sonar on the submarine, it is the most primitive and backward, and the distance of action is quite limited. Now, they can only rely on luck.

They have good luck.

Just before the sea swayed, at midnight, the lookout whistle suddenly shouted loudly: "Discover the target on the water, thirty degrees on the port side!"

When the fleet sails in formation at night, it will turn on the navigation lights. Only in this way can the formations see each other clearly. Otherwise, it will be easy to lose or collide with them in the dark.

And now, what the m-98 submarine discovered was the lights on the sea. As long as you see those lights, you will know that it is a fleet!

When the surface ships and maritime air force of the Black Sea Fleet have been killed, the formations on the sea can only belong to the Germans!

"Be careful, prepare for the battle!" Bristoff was extremely excited: "Dive down, climb the periscope."

The m-98 is a first-class small submarine with only more than twenty people operating in total. Now, after receiving the order, the watchtower went down, drilled back into the command tower, covered the cover on the top, and then, the submarine of more than three hundred tons dived down into the water like a big fish.

The attack is about to begin!

At the same time, the m-172, who was walking with him, discovered the German target almost at the same time and began to dive into the water. Everyone was full of excitement. For them, the task was heavy and they wanted to avenge the fleet!

The periscope stretched out from the sea and drew a rolling wave. At this moment, they found that the target fleet had actually begun to turn!

Stuttgart.

At the top of the bridge, a huge radar antenna is rotating. Every time it rotates, the target data is refreshed.

This is the latest air-to-sea search radar developed by Germany. By using the latest transistor processing circuit, the processing capacity of sea surface clutter has been greatly improved.

For example now.

"Searching two small targets on the water." The radar hand looked at the two small echoes that were flickering on the screen and reported loudly: "The target tonnage may be about a few hundred tons, less than 20 nautical miles away from us."

At this moment, these two small echoes suddenly disappeared.

"Are you dazzled?" asked the officer on duty.

"No, I'm sure it must exist. It was just on the radar screen. Now it has disappeared, there is only one possibility!" said the radar hand: "It has dived. If it is close to a distance of five nautical miles, my radar can find its periscope!"

The radar hand was quite sure, and the news was reported to the upwards immediately and reached Mashar, who was already asleep.

At this time, Mashar was lying in a comfortable bed with his clothes. When he received the report, he almost jumped up and instantly turned to a state of awakeness.

Discovering suspicious echoes, suspected submarines? After receiving this news, Mashar immediately issued an order: "Leave two A-class destroyers and two frigates to sweep the Soviet submarines here, and other warships in the fleet will immediately change their course, and go 60 degrees eastward, and we will detour."

If Gorshkov had not been entangled with the submarine force, he would not have suffered such a big loss. After all, surface ships have a huge speed advantage, and it is no problem to fly thirty knots. A higher speed can even exceed 35 knots, and the submarines cannot catch up at all.

Now, of course, Mashar would not use his entire fleet to play peek-seek games with Soviet submarines. With four destroyers and frigates, it would be enough to deal with them, and the remaining turn left!

At some point, Mashar was quite risky and even took a gamble, such as sending all his energy to bomb the Soviet aviation base on the island, and sometimes, he was cautious, such as now.

It is unwise to expose your huge fleet to the threat of submarines. Although your warships have specially provided additional protection against underwater, it is okay to be hit by a torpedo, but if they are hit on a propeller or rudder, it will be bad.

It is possible to deal with just a few destroyers and frigates, and there is no need for our main force to take risks.

With his orders, the huge German fleet began to turn, with only two Z-class destroyers and two river-class frigates separated from the fleet and headed to intercept.

An anti-submarine warfare kicked off on the dark sea.
Chapter completed!