Transmigrated as the Crown Prince

The sonar officer on the destroyer held his earphones with his hands and listened intently to the sound coming from the earphones, for fear of missing any strange noises.

The word Sonar is an American term first used in World War II. It is an acronym for SOound, NAvigation and Ranging. The British also call Sonar "ASDICS", which stands for Anti-Submarine Detection Investigation Committee.

Sonar works in two ways: active and passive.

The passive method is just "listening", that is, it only relies on receiving the target's radiated noise to determine the target's orientation and other information; the active method is to emit a pulse or FM signal of a certain frequency and obtain relevant information by receiving the target's reflected wave (similar to radar) .

Later sonar developed into various advanced systems including echo sounders or depth sounders, fast scanning sonar, side scan sonar and WPESS (pulse electronic sector scanning). However, sonar at this time was still very primitive and even had many flaws.

After waiting for a long time without a response from the sonar operator, the destroyer captain Brady frowned slightly. "Sonar soldier, haven't you found it yet?" He firmly believed that he had not made a mistake in his judgment and that the German submarine would be found nearby.

The sonar operator shook his head. "No sir, there are no unusual noises around here. Either the German submarine has shut down its engine, or it has already left." Another possibility is that Brady made a mistake in judgment and simply found the wrong location of the submarine.

"..." Brady's brows furrowed deeper. Although he didn't want to admit it, he couldn't help but doubt his own judgment.

At this time, another destroyer came to help, and the two destroyer captains discussed and decided to expand the search area.

Just as the two destroyers were searching for submarines in circles, Kretschmer's Tiger Shark submarine had captured another target two kilometers away, which was also a large cargo ship. This cargo ship had a larger tonnage and seemed to It has a total weight of 50,000 tons, and the name of the ship can be vaguely seen as "Jasmine".

A cargo ship had just been sunk. The ships on the waterway knew that there were German submarines nearby and consciously increased their speed. But if we improve it, it will only be two or three knots higher, not much faster. The sailors on the ship rushed to the side of the ship and scanned the nearby sea nervously.

Suddenly, a sailor on the Jasmine freighter saw a petrel standing steadily on the undulating sea in the distance.

"??" This is a bit weird. Are there any reefs or something nearby? Has that petrel practiced floating on water? He knew that petrels cannot swim. Although petrels basically live at sea, the main source of finding food is also on the sea surface. They can catch food in the water by flying on the sea surface. But they really can't swim. When they get tired from flying, they will choose to rest on some tree trunks or rocks on the beach.

Unless there's something beneath its feet...

"Hey! Hey! There, there seems to be a submarine there!" That petrel might be standing on the periscope of the submarine! And their ship happens to be in the T-position of that submarine, maybe the submarine is ready to launch a torpedo!

"..." Kretschmer looked at the sailors on the cargo ship pointing here and yelling, and couldn't help but wonder how they were discovered?

Naturally, he didn't know that a petrel fell on the periscope, and he just thought that these guys saw his periscope.

"Torpedo No. 3 and No. 4, fixed depth is 13 meters! Launch!" This freighter Jasmine was much larger than the one just now, and one torpedo might not be able to sink it, so he launched two magnetic torpedoes.

After giving the order to launch he retracted the periscope.

Seeing the petrel soaring into the sky, the sailors on the Jasmine freighter immediately exploded. This was obviously a German submarine that had put away its periscope. It was very likely that they had launched a torpedo and were preparing to leave!

"Go ahead at full speed!!" The captain of the Jasmine was almost paralyzed with fear and shouted the order. The main engine of the ship is accelerating, and black smoke is constantly coming out of the boiler, but the ship is still sailing slowly. "Send a distress signal to the destroyer quickly!"

Brady, who was searching for traces of German submarines in the distance, was stunned when he received a distress signal from the Jasmine. When and where did this submarine go? Or is there more than one submarine here, and there are really German "wolves" lurking nearby? But if it were really a pack of wolves, they should attack at the same time, not one by one.

Or is this their plan to lure the tiger away from the mountain?

For example, maybe the submarine from before was hiding nearby, and when they went to search for another submarine, it would come out and continue to attack passing ships?

After the two captains discussed it, the other destroyer continued to stay here to search for the submarine, and Brady rushed over to pursue the submarine.

While Brady ordered the destroyer to turn around, he cursed in his heart, are the officials above all fools? The waterway is so long, and only their destroyers are responsible for patrolling. Each ship has to keep a long distance between them. Once a situation arises, it is impossible to provide timely support. Do those guys think driving a boat is drag racing? Can you hit a speed of more than 100 kilometers just by stepping on the accelerator?

"Jasmine, Jasmine, please answer when you receive it, please answer when you receive it!" As they accelerated, the radio was also calling. "Please tell me the exact location of the enemy submarine."

Soon a reply came from Jasmine. "My ship is about 1,000 meters to the port side. They just put away the periscope. Maybe..."

"boom!"

"boom!"

Before the other party finished speaking, two violent explosions sounded from the bottom of the Jasmine cargo ship, causing water columns to rise into the sky.

The explosive force squeezes the seawater to form terrible energy. Under the physical condition that water is incompressible, it turns the gaseous impact into a solid liquid and transmits it fiercely to the bottom of the ship!

This terrifying force easily deformed and twisted the keel structure supporting the entire ship until it broke. One torpedo was enough to kill half of the Jasmine's life, and the second torpedo that followed completely killed it. With a creaking sound, the hull broke from the middle and became two sections, front and rear!

"God!" Seeing people jumping into the sea on the broken ship, Brady couldn't stop to rescue him. If he didn't find those damn submarines, he didn't know how many cargo ships would suffer.

Fortunately, this time they had the exact location, and they immediately rushed to the place where the German submarine launched the torpedo. "Sonar soldier, quickly find that female cousin's son!"

The sonar operator pressed the earphones hard against his ears, trying his best to hear the received sound wave information clearly. Others around him did not even dare to take a breath for fear of affecting the sonar operator's work.