"7 meters deep! Continue diving!" In the command module, a non-commissioned officer reported to Prien, who at this time in the periscope finally saw how large the enemy ships on the opposite side were.

"Soviet-class battleship?" muttered Prien, who couldn't believe that he had been lucky enough to run into a Soviet battleship in the middle of the ocean. To be honest, he didn't want it to be a battleship, because wherever there were battleships, there would be anti-submarine destroyers to escort them.

Attacking a battleship in a war zone is a risky move for any submarine commander, because even if it is ultimately successful, the submarine is often immediately pursued by several destroyers - it is one thing to get a medal or not, and it is another thing to have the life to go back and get a medal.

Prien left the periscope, and the first mate leaned in to continue observing the target. Captain Prion stepped aside and flipped through the projection notebook of the enemy ship. He wanted to check whether there was any difference between the battleship in his mind and the image of a real Soviet-class battleship. As a result, he was very entangled, this is a Soviet battleship, and it is indeed the world's latest generation of battleships "Soviet class".

Speaking of Soviet-class battleships alone, it is probably the largest battleship in the world so far, equipped with 9 large-caliber guns, and the layout is somewhat similar to that of the Japanese Yamato. However, there are certain differences between the two, for example, the Soviet-class originally designed 406 mm caliber main gun (the same as the Yamato class), and finally changed to an imported 381 mm caliber main gun because of the difficulty of design.

However, such a battleship with the largest tonnage built after World War I did not have a radar, and the fire control system only adopted a relatively backward version.

Prien put down the booklet in his hand after the comparison, and then issued a combat order of his own: "Dive to a depth of 20 meters, prepare to release torpedoes for attack, continue to observe, and confirm the location of other enemy ships on the surface." ”

"Tick...... The echo of the "tick ......" sonar came through the headphones hanging from the ears of the German sonar soldiers, somewhat monotonous and somewhat hypnotic. But the sonar soldier still listened intently to the sound, and for him, the monotonous and seemingly unchanging sound was more important than the eyes.

He could tell the approximate distance between the submarine and the enemy ship from the sound, and he could hear whether the other party was heading away or closer. He could hear the sound of anti-submarine weapons falling into the water, as well as the explosion of a torpedo hitting the target. It can be said that under water, he is the eyes and ears of the entire submarine, and is Prien's only reliance.

"Behind the battleship, it seems to be followed by a destroyer! In addition, his silhouette is too big, I can't see the other angle, whether its side is following more enemy ships!" The first mate reported his observations: "The ship following behind is not clear in size, and the distance is a little too far." ”

"Calculate the angle! Adjust the fixed depth of the torpedo, set the preset depth to 9 meters! Quick!" Prien gave a new order.

The front torpedo compartment of the submarine began to get busy, and the technicians began to flip the gears and valves to adjust the torpedo to a fixed depth. The depth of each torpedo is different, and the depth of the explosion directly affects the damage of the torpedo to the target.

The closer an attack is to the bottom of a ship, the more likely it is to cause more structural damage, which has a lot to do with the mechanics of seawater extrusion and the design of the ship - usually the side of a warship is covered with thick armor, but the bottom of the hull is relatively fragile. An explosion close to the bottom can destroy more compartments, fill more seawater, and cause more trouble for repairs.

Of course, it is not possible to set the depth of all torpedoes in advance, and the ideal depth for attacking a battleship is mostly more than ten meters, but if you use this depth to attack a destroyer or cruiser, the torpedo can only pass through the bottom of the opponent's ship. The same is true for merchant ships, except that they are usually vulnerable, and a single torpedo is sufficient in most cases.

Therefore, most torpedoes are temporarily loaded and then fired, and the pre-loading of torpedoes in the submarine torpedo launch bay only occurs in two situations: the first situation is that the submarine commander expects to fire the most torpedoes at the fastest speed, such as the battle of Prion in the raid on the British military port, and the second situation is that the submarine has just gone to sea and has to use the limited space to carry the most torpedoes for combat.

"The torpedo is adjusted!" After adjusting the depth of the torpedo, the master chief who adjusted the machinery quickly reported to the command room, and the command to reload came from the command room without any pause.

"Reload!" With the order of the master major, the four soldiers each pushed the two suspended torpedoes into the launch canister. The thick torpedo cannon hatch was slammed shut by the soldiers, and the two men worked together to tighten the valve knob on the hatch.

"Reload!" They adjusted four torpedoes, so after loading the two torpedoes, everyone did not sit idle, but hurriedly loaded the other two, and soon the four torpedoes were pushed into the launch canister, and the other two launchers were also loaded with two torpedoes that were stuffed in at the time of departure, and the set depth was about 3 meters, which was not prepared for attacking the battleship.

At this time, the enemy ships were not far from them, and the Prientunguò periscope, which had returned to the periscope position, confirmed the number of enemy ships, and in his periscope there were 4 Soviet warships, a Soviet-class battleship, an unknown cruiser, and 2 destroyers. The fleet was apparently going to pass through here on its way to Leningrad, and it was ridiculous that the standard anti-submarine advance formation was not adopted.

Chance! In this way, it seems that after the sneak attack is successful, there is still hope of escaping! After thinking about it for a long time, Prion finally made up his mind to take a risk. After all, such opportunities are not common, and I may never encounter such an opportunity again in my life.

"Correct the course! 5 degrees to the left!" Prion had to get the best launch angle to make sure he had enough time to escape after he managed to take out the battleship. After all, the two destroyers are not decorations, and God knows if the other side will chase after them.

"Prepare to launch the torpedo!" Prien waited, waiting for an opportunity, the bow of the submarine had already pointed to the opponent's course, and the torpedo could be launched directly without even adjusting the angle, which was the most typical submarine attack, and the difficulty was relatively low.

If the destroyers of the Soviet Navy were in anti-submarine formation, it would not be easy for Prien to find such a perfect launch position, but it seemed that it would take a long, long time for the Soviets to learn the standard procedures of the British. Prian felt compelled to teach the Soviets a lesson and make them memorize something that needed to be memorized earlier.

"No. 1 and No. 2 torpedo tubes, launch torpedoes! No. 3 and No. 4 torpedo tubes, launch torpedoes!" Prien did not fire his four torpedoes in a salvo, he paused, and after an interval of about half a second, he was turning slightly, so that his torpedo could cover a sector area more than ten meters wide.

Waiting, all he could do for the rest of the time now was wait, and the long wait was enough to make people feel upset. Of course, you have to find something to do for yourself while you wait, such as turning and running away......

"Steer, full left rudder, speed 4 knots, turn off the lights in the boat, save electricity!" Prien gave the order smoothly, not only did he flee for the first time, but he had already experienced a flight that was even worse than the current situation. So he's confident now, because it's just a "small scene" right now.

On the surface of the sea, which was already full of broken ice, the white waves that were turned up by torpedoes were like four straight lines, extending from the original position of the submarine, and it was very obvious from the air, as if someone had drawn four white lines on the sea.

The advancing Soviet fleet, the chimney of the flagship battleship USS Soviet, was emitting not very thick black smoke. The battleships were rushing to Leningrad at about the fastest pace, where they were preparing to further threaten the coast of Norway and Finland.

The commander of the fleet felt that in order to get rid of the threat of submarines, then it was necessary to increase the speed of sailing, and once the speed of the fleet exceeded 25 knots, then the submarines would not be able to attack them. This conclusion was learned from the British, because the statistical reports of the British said that the higher the speed, the lower the probability of an attack on a transport ship.

So this fleet of the Soviet Union swaggered out the classic long snake formation, or the classic World War I formation headed by battleships. Prion was a little embarrassed to attack such a pure fleet commander, who was like a two-meter-tall man bullying a first-grader.

At this time, on the watchtower of the Soviet fleet, the flagship of the Soviet Union, a Soviet naval officer frowned and saw an unknown object swimming on the surface of the water in the distance.

A periscope! He was stunned by the telescope. That's a periscope that's turning away from itself. The soldier on duty hurriedly grabbed the telephone: "Submarine! Starboard! German submarine! Attention!"

Just as he was nervously reporting his discovery, without the need for observation equipment such as a telescope, he could already see that not far from the starboard side of the battleship, there were four white waterlines, which were rapidly approaching.

He grabbed the phone and instinctively shouted in horror: "Torpedo!" R1148