"Brothers, look here, we seem to have found something!" The new German submarine U534, which is in the state of snorkeling, is slowly sailing at a depth of more than ten meters, and the snorkel is exposed to the surface of the water to provide oxygen to the diesel generator. At the same time, the Germans' mast radar 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 sea patrol aircraft, but there was no big mistake in being 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!" For a moment, 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. From now on, it was only a matter of time before the Allied and Entente fleets met. As the vanguard of the Allied fleet. First of all, a bloody battle broke out between the German wolf pack and the Entente escort fleet!

The wolf pack tactics of the German submarines were to assemble first, and then follow the target fleet during the day. At night, especially on the night of the full moon, the submarine group will launch an attack on the fleet at night, and this attack is often launched on the surface, after all, even if the submarine has a snorkel, it only ensures that the underwater dive 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, but generally this speed will drain the entire battery pack in an hour. Submarines may even counter-kill destroyers in advantageous situations. But this time, the submarine forces of the Germans, after losing the assistance of aviation cruisers. It's hard to even centralize and track!

A PBY Catalina seaplane passed by at low altitude, and the Entente soon discovered that there were German submarines around the fleet, and the entire anti-submarine network was quickly activated, and the flat destroyers equipped with sonar and depth charges and hedgehog shells began to spread out to the periphery, and various anti-submarine aircraft also took off, among which the PBY Catalina seaplane, which is one of the pillars of the entire air anti-submarine plane, also began its own battle, this aircraft performance is very bad according to normal, slow, fragile firepower and structure, Make it very vulnerable to air strikes. But it is undeniable that it is a very good anti-submarine aircraft, which can take off and land on seaplane 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. This three-dimensional anti-submarine network of the Americans really gave the German submarine forces a headache. 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 for recharging because of a damaged snorkel. As a result, the American plane arrived in half an hour, and then decisively overtook the other side with 2 depth charges and 1 sound-guided torpedo. And even those submarines that remain at the depth of the snorkel should be cautious. The newly reequipped American anti-submarine aircraft with a sea search radar can even detect the snorkels and periscopes in the depths of the submarine at a closer distance!

"Under the suppression of the air power of the Entente, we were almost unable to fight, in the face of the endless fleet, we simply could not determine what the pre-agreed target was, the American planes were constantly circling over our heads, they were cruising in the outer layers of the fleet for 25 to 50 kilometers, the sound of the engines of the planes and the thump of the active sonar of the destroyers were chilling, even with a snorkel it turned out to be a very safe way of sailing, our depth was too shallow, and the view of the periscope was limited, After the Entente detected us with radar from a long distance, they began to get closer, and when the distance was closer, they would turn off the radar and then search by sight, at which time our radio receiving equipment was equivalent to a decoration, and many submarines were located by sonar buoys without realizing 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 at the place of the 40 chain next to the U159 submarine was another submarine U251. Behind him was the U376, a submarine still in submarine, and they were among the lucky ones among German submarines. It would have been a blessing that they could evade the anti-submarine aircraft during the day, and then gather together before nightfall to attack a flotilla. Even more glad. 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 very well, 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 handed it over to the U376 at the back to solve it. The three sea wolves walked cautiously towards the target, and the first target they chose was a large guy with a length of 150 meters, which should be more than 20,000 tons in terms of tonnage, and should be a high-speed civilian ship converted into a transport ship. (The so-called high speed is based on 12 knots.) It's not that you can compare the speed with a battleship. ）

"I'll go! This TM is an auxiliary cruiser! "THE TWO SUBMARINES SMEARED UP, AT A DISTANCE OF 2500 METERS, THE U251 SUBMARINE OPENED FIRE FIRST, AND THE TWO 105MM DECK GUNS IN THE BOW SPEWED OUT TONGUES OF FIRE ONE AFTER ANOTHER, FLYING TOWARDS THE BRIGHTLY LIT TRANSPORT SHIP IN THE DISTANCE, AND TEN SECONDS LATER, 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. Then, a barrage of shells came from the cruiser, and the big guy accelerated to evade as he opened fire, and he was already aware of the attack of a submarine. Shells from both sides were constantly staggering through the air. In terms of artillery warfare, the two submarines really can't beat a two-knife auxiliary cruiser, and the two submarines have a total of only 1 128 guns and two 105 guns. And the sideboard fire of the opposing side is at least 4 medium-caliber guns, as well as a large number of machine guns. THE TONGUE OF FIRE FROM THE 40MM BOFORS CANNON MADE A SPLASH ON THE SURFACE OF THE SEA.

The U251 submarine, which fired first, was taken care of, and two deck guns were destroyed under a dense rain of bullets. Later, the conning tower was hit by at least one more 105-level shell, slicing off the periscope and communication antenna on it. The sides of the hull are also covered with holes that have been blown open, and it looks like it can't be supported! "Go up, release the torpedo, and get out!" 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. After the rapid dive, the U159 submarine immediately drove to the maximum speed, and with the roar of the propeller, the submarine rushed forward to the target 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 force is still very high, the U159 submarine quickly judged the opponent's track, and occupied a suitable launch position through maneuvering, the 6 533MM torpedo tubes in the bow of the ship are ready to go, 6 sound-guided electric torpedoes are ready, with the high-pressure gas to push the torpedo out of the launch tube, 6 heavy torpedoes fanned out to the target 1200 meters away, and just after the U159 completed the shooting, there was no chance to see the results, A flat-plate destroyer appeared on the battlefield, and the U159 submarine, which had no weapons in its hands, immediately dived, and the rest was left to the U376. It takes more than 10 minutes to half an hour for a submarine to reload after firing a torpedo, and even if there is a torpedo in the launch 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 U159's retreat. "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 again and again. 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 ascend, but fortunately they began to dive at a limited depth, and with the help of a water pump, the wrecked submarine finally floated up, and a German soldier climbed out of the control tower with difficulty, and then planted a white flag, and saw the huge figure in the night sky, and several pillars of light sweeping 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.) )