"Brothers, look here, we seem to have found something!" The new German submarine U534, which is in the state of snorkeling and sailing, is slowly sailing at a depth of more than ten meters, and the snorkel is exposed to the surface to provide oxygen to the diesel generator. At the same time, the mast radar equipped by the Germans also surfaced and began to scan the nearby sea, although it was close to the middle of the Atlantic, and it was reasonable not to encounter the sea patrol aircraft, but it was not a big mistake to be careful. The Germans decided to find out what was going on around them first! And it doesn't matter if you look at it, this submarine directly opened the prelude to the collision of the fleets of the two sides.

A large number of dense dots of light appeared on the radar display. "Oh my God, we've found a fleet that is too big!" In an instant, the captain of the submarine U534 even thought that he had found the main force of the Entente fleet, and according to his estimates, there were at least 30 large and medium-sized ships in front of him. They were sailing from west to east.

"It's also possible that the Entente transport fleet, should we report this information first?" An officer next to him asked. "Let's stay away. Send messages using the Navy's newly provided cipher. The captain thought for a while and said, as the eyes of the fleet, the main task of the submarine force this time is not to see how many merchant ships you have sunk, but to see if you can find the whereabouts of the other party, and the U534 submarine has faithfully fulfilled its responsibilities.

They immediately sent this vital piece of information, which was first sent to the headquarters of the German Navy in Europe via long waves, and then relayed to the Allied Combined Fleet, which was sailing at sea. Subsequently, the entire German fleet sailed in the direction of Greenland like a shark smelling blood, and from now on it was only a matter of time before the Allied and Entente fleets met. As the vanguard of the Allied fleet, the German wolf pack first broke out one bloody battle after another between the Allied escort fleet!

The wolf pack tactics of German submarines were to first assemble, then follow the target flotilla during the day, and at night, especially on the night of the full moon, the submarine swarm would attack the flotilla at night. This kind of attack is often launched on the surface, after all, even if the submarine has a snorkel, it only ensures that the underwater diving time is longer than normal, but the cruising speed is still generally 4 to 5 knots. Of course, if you have to run more than 15 knots, that's fine. However, at this rate, the battery pack will be exhausted in the next hour. Submarines may even counter-kill destroyers in advantageous situations. But this time, the submarine forces of the Germans, having lost the assistance of aviation cruisers, even had a hard time concentrating and tracking!

A PBY Catalina seaplane flew by at low altitude, and the Allies soon spotted the presence of German submarines around the fleet, and the entire anti-submarine network was quickly activated. Flat destroyers equipped with sonar and depth charges and hedgehog shells began to spread to the periphery, and various anti-submarine aircraft also took off, among which the PBY Katrina seaplane, which is one of the pillars of the entire air anti-submarine aircraft, also began its own battle, the performance of this aircraft is very bad according to the normal, slow, fragile firepower and structure, making it very vulnerable under air strikes, but it is undeniable that it is a very good anti-submarine aircraft, which can take off and land on seaplane aircraft carriers, with a long range, And the larger body can also accommodate all anti-submarine weapons, including sonar buoys, radars, depth charges, and even anti-submarine torpedoes. A Catalina seaplane is an independent combat unit that integrates reconnaissance, search and attack, and its long range allows it to continuously put pressure on German submarines, in other words, it can scare you even if it doesn't kill you!

Don't say it, the three-dimensional anti-submarine network of the Americans is really a headache for the German submarine forces. The German submarines that entered the theater of operations one after another did not dare to show their heads at all, and one submarine was forced to surface to recharge because of a damaged snorkel, but the American planes arrived in half an hour, and then decisively overtook each other with 2 depth charges and 1 sound-guided torpedo. And even those submarines that remain at the depth of the snorkel must be cautious, and the newly reequipped American anti-submarine aircraft with the sea search radar can even spot the snorkel and periscope in the depths of the submarine at a closer distance!

"Under the suppression of the air power of the Entente, we could barely fight, facing a stretching fleet. We simply could not be sure what the pre-agreed target was, the American planes were hovering over our heads all the time, cruising 25 to 50 kilometers in the outer layers of the fleet, the sound of the engines of the planes and the clatter of the active sonar of the destroyers was chilling. Even having a snorkel proved to be an unsafe way to navigate, our depth was too shallow, and the periscope's view was limited, and the Entente, having detected us with radar at a distance, began to get closer, and when the distance was closer, they turned off the radar. Then we searched visually, and at this time our radio receiving equipment was equivalent to a decoration, and many submarines were located by sonar buoys without being aware of it, and then destroyed by bombs. A German submarine captain wrote in his diary. In the daytime battle, more than 20 submarines from Germany rushed to the battlefield one after another sank 4 transport ships, but they themselves took 6 submarines, so the exchange ratio was really unbearable!

Faced with the bloody facts, all the German submarines began to hide in the deep sea, they endured and waited for the night to fall, "at night, those demons in the low sky should disappear!" "The Germans thought so, and did so, when night fell and the moonlight filled the sea, German submarines appeared from the sea, and some even climbed out of the conning towers to search for targets on the sea with binoculars or low-light night vision devices, and the light control of the Allied fleet was not very successful, and the temporarily mobilized rookie crews seemed to be difficult to ensure the safety of the fleet at night without lights." Don't they know that the closer you are to the light source, the closer you are to death? A German captain sneered at the flickering lights not far away.

The Germans were still very vigilant, they reconnoitred the surrounding situation before they surfaced, and only surfaced after making sure that there should be no destroyers around, and next to the U159 submarine 40 chains was another submarine U251, and behind him was a submarine U376 that was still submerged, they were the lucky ones among the German submarines, they were able to avoid the anti-submarine aircraft during the day, and then get together before nightfall to attack a fleet of ships would have been a very fortunate thing. What's even more fortunate is that these 3 submarines belong to a submarine group, and everyone has cooperated at sea before, and now they are naturally familiar with fighting!

The Germans thought well. The two submarines went up and killed with deck guns and torpedoes, and if it happened that the other side had a destroyer somewhere, it didn't matter, and it was handed over to the U376 at the back to deal with. The three sea wolves cautiously walked towards their target, and the first target they chose was a large creature that was 150 meters long. In terms of tonnage, it should be more than 20,000 tons, and it should be a high-speed civilian ship converted into a transport ship. (The so-called high speed is based on 12 knots, not that it can be compared with the speed of a battleship.) ）

"I'll go! This TM is an auxiliary cruiser! "The two submarines smeared up, and at a distance of 2,500 meters, the U251 submarine opened fire first. The two 105mm deck guns in the bow of the ship spewed out tongues of fire and flew towards the brightly lit transport ship in the distance, and after ten seconds, two flames rose from the target deck, and before the Germans had time to cheer for the hit, several searchlights quickly swept over the sea, and then, a series of shells came from the cruiser, and the big guy accelerated to avoid while firing, he had already realized that there was a submarine attacking. Shells from both sides were constantly staggering through the air. In terms of artillery warfare, the two submarines really can't beat a 2-knife auxiliary cruiser, the 2 submarines have a total of 1 128 guns and 2 105 guns, and the opponent's side fire is at least 4 medium-caliber guns, as well as a large number of machine guns, and the tongue of fire spit out by the 40mm Bofors gun makes a splash on the sea.

The U251 submarine that fired first was taken care of, with two deck guns destroyed under a dense rain of bullets, and then the conning tower was hit by at least one 105-class shell, cutting off the periscope and communication antenna above. The side of the hull is also covered with holes D that have been blown up, and it seems that it can't be supported! "Go up. Release the torpedo, and evacuate! Captain U159 commanded loudly. The U159 submarine began to dive, and the crew returned to the submarine from the deck, and several more soldiers were killed by shrapnel during the change. The U159 submarine immediately turned to its maximum speed after a rapid dive. With the roar of the propeller, the submarine rushed forward at a speed of 14 knots, ready to seize the attack position and launch a lightning strike.

To be honest, the training level of the German submarine forces is still very high, and the U159 submarine quickly judged the opponent's trajectory and occupied a suitable starting position by maneuvering. The 6 533mm torpedo S tubes in the bow of the ship are ready to go, the 6 acoustic electric torpedoes are ready, and with the high-pressure gas pushing the torpedo out of the S tube, the 6 heavy torpedoes are fanned out and rushed to the target 1200 meters away, and just after the U159 completed the S shot, there was no chance to even see the results, a flat destroyer appeared on the battlefield, and the U159 submarine, which had no weapons in its hands, immediately dived, and the rest of the things were handed over to the U376. It takes more than 10 minutes to half an hour to reload the submarine's torpedo S after it has been fired, and even if there is a torpedo in the S tube, it is rare for a submarine to be unable to get past the destroyer when it can run.

After the U159 dived for more than ten minutes, the battleship's passive sonar detected two violent explosions, one explosion occurred from the surface position, according to the location of the sound source, it was speculated that the large merchant ship should have been sunk, and the other explosion was sent from underwater, if nothing else, the U376 was destroyed by the Allied destroyers while covering the retreat of the U159. "A moment of silence for the dead comrades." The captain of the U159 submarine whispered. Tonight's attack was not a victory, sinking a transport ship but carrying 2 submarines and hundreds of excellent naval officers and men. Fortunately, the German officers and men on the U159 submarine thought that the catastrophe had been avoided.

"Knock, knock, knock." The sound suddenly came from the bottom of the sea, and a special sound wave was constantly knocking on the side wall of the submarine! This kind of sound in front of the submariners is like an invitation from death, which makes people feel desperate and terrible! "The submarine continues to dive, extreme depth, fast!" The captain whispered, all departments immediately returned to their positions, the water tanks on both sides of the submarine were filled with water again, and they began to think about diving deeper, but unfortunately the PBY Katerina anti-submarine patrol aircraft located above the head of the U159 submarine did not give them a chance, after the sonar buoy determined the position, a series of depth charges fell into the water, and the violent explosion formed a high temperature and high pressure bubble in the water to squeeze the submarine that was evading, and the tough pressure-resistant shell of the U159 submarine trembled and twisted in the explosions and shocks. Some fragile places had leaky palms, and a large amount of seawater poured into the interior of the submarine.

"We surrender and prepare to float!" Even if the submarine with heavy losses escaped this catastrophe, it would never be able to return to the mainland, and in this case, the captain of the U159 decisively chose to surrender. The submarine began to use the remaining power to rise, but fortunately they began to dive at a limited depth, with the help of the pump, the wrecked submarine finally floated up, a German soldier climbed out of the control tower with difficulty, and then put a white flag in place, and saw the huge figure in the night sky, and several pillars of light that swept across the sea. The Americans stopped the attack, and several small boats approached the submarine, and after destroying the equipment inside the submarine and the code book, the submarine and the officers and men on it were already out of the war. Also under the cover of night, such battles are staged in many places!

The German Navy suffered heavy losses after a night of bloody engagement, and they underestimated the aviation capabilities of the Americans, and these large birds, which had an oversized range and could take off and land on the water, became the wolf pack terminators. In the eyes of the Germans, they are everywhere, throwing probes and torpedoes symbolizing death into the sea at any time, and individual German submarines are also fortunate to learn a new type of anti-submarine equipment in China, this kind of thing called a magnetic detector can completely ignore any acoustic confrontation and silence, although this equipment that finds the target through magnetic force is relatively close, but as long as it bites, it is difficult for the submarine to get rid of it.

In just one night, 10 German submarines were sunk and 5 were seriously damaged! Dönitz's wolves suffered an unprecedented defeat, although they also sank more than 20 transport ships of various kinds, but this record was nothing more than a drop in the bucket for the huge Allied fleet, and more importantly, they failed to penetrate the outer transport fleet to find the main force of the Allied fleet!

Thank you to the book friend yangminfafaf for supporting the ~~~~~~ with a monthly pass. (To be continued.) )