Chapter 1315 Advantages of AIP Submarines (Plus 1)

The Stirling engine does not burn liquid fuel, but outputs power through a cycle of cooling, compression, heat absorption, and expansion through the helium gas stored in the tank. It does not need ignition, no knocking, and the noise is quite Low, almost like sailing on batteries.

At the same time, it does not directly drive the propeller at the tail, but drives a generator to supply power to the whole boat, and at the same time power the motor at the tail to push the submarine forward.

At this time, the Stirling engine is rotating at a slow speed, and the helium gas in the gas tank is constantly doing work, until the helium gas is exhausted, then it can no longer sail like this. Generally speaking, that time is over. Combat cruise, back to home port.

"Accelerate to ten knots." Shepke ordered.

When fully using the Stirling engine, they could only reach a maximum speed of five knots, and now they have started to use the power of the precious battery to speed up the sailing speed.

This submarine is improved by adding cabin sections to ordinary submarines, and retains the same battery as ordinary submarines. When needed, in order to sail silently, the power of the battery can also be used.

The five-blade propeller at the rear has a faster speed, but compared with the previous three-blade propeller, the speed has dropped significantly, which makes it less noise and is not easy to detect.

They had been wandering near Sevastopol, only fifty nautical miles from the port, but now, with a speed of ten knots, they can reach the port in five hours. Easiest.

Below the conning tower, sonarists are listening carefully to the sound of the sea.

In recent years, Germany's electronic technology has progressed rapidly. Thanks to the miniaturization brought by transistors, sonar machines have made great progress. Now, the sonar ball at the front of the ship's bow is receiving the surrounding clutter.

Listening in the clutter and discovering the other's surface ships and submarines is the task of the sonar soldiers.

Time is passing little by little.

Shepke looked at his chart, where the first mate had already marked the trajectory. According to his own voyage, he would reach Sevastopol in two hours.

At this moment, suddenly, the sonar operator's brows frowned. Among the numerous noises, there was a completely different sound, high frequency, regular and rhythmic, that was the noise of the propeller!

"The noise of the propeller was found, about twenty nautical miles away," the sonar operator said.

Twenty nautical miles away, it means that the other party has already started to leave the port! Shepke felt his adrenaline rushing fast, and the wet smell of the diesel in the submarine made him feel so fresh.

"Ascent to periscope depth," Shepke shouted.

They had been sailing at a depth of about fifty meters just now, but now, the huge submarine started to slowly raise its head, and at the same time, a periscope slowly rose on the conning tower.

If it was other submarines, they would have to raise the snorkel at this time, and use a short time to charge the battery, but now, they just need to raise the periscope.

At a depth of ten meters, the submarine leveled, and Schepke pushed the periscope in front of him and put his eyes up.

The sonar of this era is not advanced enough to provide torpedoes to shoot the elements. Attacks on enemy warships still rely on periscopes, and at the same time, periscopes are also needed to confirm the target.

When Shepke fixed his eyes on the periscope, the sea was sparkling, and the moonlight sprinkled on the entire sea, and the surroundings looked very clear.

Well, the visual distance to see the outline of the enemy warship is at least three nautical miles, which is enough to identify the target.

Pushing the periscope, Shepke's feet slowly turned, and at the same time, the field of vision in the periscope also turned. Suddenly, he was overjoyed: "Right rudder one, full speed!"

On the sea, you can see the flashing light, which is the navigation light that the ship turns on when it is sailing!

I really didn't expect that the Soviets would turn on their navigation lights when they went out to fight at such a time.

After receiving the order to move forward at full speed, the sailor turned the operating lever in front of him to the forward five position. As he moved, the lights of the whole boat suddenly dimmed.

They still didn't turn on the diesel engine, and they sailed entirely on their own battery power plus the power of the Stirling engine. The propeller at the tail accelerated and pushed the water flow.

In the periscope, the target is getting closer.

The other party is sailing at high speed. In this case, it is impossible for them to find the submarine underwater, but just in case, the diesel engine with the loudest noise is not started. At the maximum speed, their electricity will be reduced. Consume quickly, and by the time you get there, you may have half the power left.

If it is an ordinary submarine, no captain would dare to do this. After all, for a submarine, the most precious thing is electricity. If the electricity is consumed more than half, then you have to think about charging at any time.

But the current AIP submarines don't need it anymore. They can use their Stirling engines underwater at any time, and they don't have to take the risk to rise to the snorkel state. If they really encounter a large number of enemy anti-submarine operations, they will sit quietly. Shen Haijie waits for the other party to leave, and if you can persevere for a week, you will have more perseverance than anyone else.

Now, U-100 has no scruples. They are sailing at a high speed at a depth of ten meters underwater, and the distance to each other is getting closer and closer.

"Left rudder one, stop and prepare to enter an ambush position." Shepke continued to give orders.

If a submarine wants to attack a surface ship, it must pay attention to its strategy. For example, the torpedoes used by submarines are mainly direct torpedoes. opponent's side.

Therefore, if the submarine wants to attack, it must occupy the attack position in advance and set up an ambush on the opponent's expected channel.

Now, the propeller at the rear of the submarine stopped rotating, and the entire hull suddenly began to decelerate. The rudder surface moved, and the submarine slowly turned its nearly 2,000-ton body to occupy the preset attack position.

Shepke's eyes were constantly staring at the periscope. The warship that came out gradually revealed its outline. After seeing it clearly in the moonlight, Shepke was immediately excited.

Whatever you want, it is the only battleship in the Black Sea Fleet!

That battleship looked so majestic. At the same time, the most exciting thing was that it was actually a solitary one, and there was not even an escort warship nearby.

"Continuous noise, ten nautical miles away, there are a large number of warships dispatched." The sonar operator said.