In the North Atlantic, where it seems to be forever choppy, several tiny pipes lined up in a straight line make waves. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

This is a German U-boat that has entered a submersible state, and one of these metal pipes is a periscope, and the other is a diesel engine snorkel pipe behind the periscope.

As long as this is stretched out to the surface of the sea, the diesel engine in the submarine can work normally, and the submarine can move forward at a higher speed in practice, and it can also charge the battery.

In this state of navigation, the submarine has entered dangerous waters and may be detected by British destroyers.

This snorkel moves slowly on the surface of the sea, revealing weirdness and danger. It's a hidden killer, terrifying for the target it wants to assassinate.

At a depth of several meters, the interior of the submarine seems to have lost the surging feeling of the water, and although it is still shaking, it seems to be much calmer.

Such a huge submarine was sailing silently underwater, and the dark shell reflected the light and shadow cast on the water, swaying back and forth like a ghost.

Its bow was still as sharp as a knife, and because it had no reference, it looked very large.

This submarine is a German-made Type IX ocean-going submarine, which is almost the most advanced submarine technology in Germany to date.

It is the backbone of the German Navy's submarine force and is now the world's top underwater killer.

These submarines have a wider hull and carry more fuel and supplies, traveling to more distant places to ambush their prey.

In the periscope, the round field of vision, and the degree gauge depicted on it are the tools used by the captain to judge the distance and angle of the enemy ship.

These scales, though not as advanced as modern submarine computers, are as accurate as German precision instruments.

And at this moment, the German submarine captain was staring at his own prey not far away, a huge prey.

Traveling to the territory was not the prey of a single merchant ship, but a huge British convoy of transports.

This fleet is escorted by many destroyers, and there are also many more higher-value targets in it.

Of course, this German submarine was not the only one responsible for attacking this fleet, and in order to ensure the effectiveness of the attack, at least 10 German submarines had been assembled in the nearby waters.

An attack of this magnitude had been communicated in advance, and the German Navy dispatched all the submarines it could for this operation, in order to inflict a ruthless blow on the British.

The GH-67 transport fleet was the target that had to be destroyed as much as possible this time, and the captain of each submarine was given the same order: to sink as many GH-67 transport convoys as possible.

"Keep course! Slow down and standby! He put his face on the periscope and commanded loudly: "The enemy ship is on a fixed course!" Prepare to attack! …… Two torpedo tubes in the bow 1,2 began to be filled with water! Listen to me! Ready to launch! ”

Again, the attack was chosen at nightfall, because the route and location were chosen just right, and the German Navy submarines could choose the most favorable time for them to attack.

Inside the submarine, after hearing the order issued by the captain, everyone waited quietly, like a deep-sea demon waiting to be killed, staring closely at their prey, ready to deliver the deadliest blow at any time.

"Watch the course...... Captain's eyes were still on the scope, he looked intently at his target, and when he saw fit, he gave the order.

"Report! The torpedo is ready! The torpedo operator replied.

"Bow torpedo tubes No. 1, No. 2, ready!" The captain continued.

"Torpedo No. 1, No. 2, ready!" The torpedo launcher pressed his hand on the switch and answered.

"Launch!" The captain gave the order to attack in a loud voice.

"Launch!" The torpedo operator pressed the switch in front of him that corresponded to the torpedo tube.

"Bang!" Everyone in the boat heard the sound of the submarine firing torpedoes, and the dull noise of the machinery as the submarine shook violently.

In the water, the bubbles tumbled and made a sound similar to water being boiled, and two torpedoes with bubbles ejected from the front of the submarine, leaving their unique marks on the surface of the sea, and rushing towards their targets.

Contrary to the common idea, attacking a moving surface target on a platform as moving as a submarine with a torpedo is a very difficult and tedious task.

This requires the courage and patience of all those involved in the entire submarine, who must adjust the torpedoes and find a suitable angle to launch them to ensure that they hit the target they should have hit.

Most of the time, submarine officers and men work together to complete a powerful attack with a torpedo. This is why the officers and men of the submarine are so united and regard honor as a collective credit.

The officers and men of the German submarines would repeatedly check the appearance and characteristics of the enemy's warships during their internships.

Including the silhouette of the side of the enemy ship, the silhouette of 45 degrees, the silhouette of 60 degrees or even 90 degrees, they have to keep in mind.

These silhouettes are very valuable information collected by German spies in advance, with which you can easily distinguish the angle between the enemy ship and your own submarine, and infer the course information of the other side.

As soon as they saw a familiar figure, these German submarine officers and men would immediately judge the draft of the opposing ship and other information.

Before the torpedo is launched, it must be corrected by a mechanical computer, the angle is adjusted and the launch time is calculated.

All these things are done by a machine, and as long as the corresponding numbers are input into the machine, a launch parameter can be obtained.

In fact, most torpedo attacks are carried out when the two sides are at angles to each other, and there are very few examples of direct fire on warships that are moored or in a straight line.

"Launch tubes No. 3 and No. 4! Torpedo...... Launch! "As time went on, the captain once again gave the order to attack.

Almost at the same moment, two torpedoes were once again pushed out of the launch tubes in the bow of the submarine, and with an indomitable momentum, they rushed to the target in the distance.

"Reload!" At the sound of an order, in the torpedo compartment in the bow, the sailors of the German Navy began to shout slogans desperately, pushing the heavy torpedoes onto the standby launch stand behind the torpedo tubes.

Then the soldiers unscrewed the huge round torpedo loads, and there was still some remaining water in them, which dripped down the open hatches and fell to the feet of the German sailors.

"One, two, three! Come on! A German non-commissioned officer with his upper body naked buttoned his hat diagonally and cheered up the soldiers beside him.

His muscles tensed, and several men worked together to push the heavy torpedo into the launch tube of the black hole.

This work had to be repeated four times in a confined space to be able to load all four torpedo tubes.

The enemy's speed is fixed, even large, and there is no need for precise aiming attacks, so the probability of failure in this attack is almost zero.

Soon, a loud explosion was heard in the distance, and the sonar soldier took off his headphones and told his captain what he heard the explosion: "Sir! Hit! ”

On the surface of the sea, the already darkened sky was illuminated by a huge explosion and fire, and the fire suddenly rose dozens of meters high, and you can clearly see the churning smoke through the periscope.

At one point, a huge explosion rang out, and the same as the J-18 convoy had befallen the GH-67 flotilla, which was drowned out by a series of huge explosions.

The attack of German submarines unfolded from all directions, and at once confused the British convoy of escort destroyers.

They could not tell which side was the real direction of attack of the German submarines, so they did not dare to act rashly at all.

An explosion can mean a fatal sinking for a fully loaded transport ship.

In terms of size, the GH-67 transport fleet is even larger than the J-18 transport fleet. Because of this, there are now significantly more ships sunk.

"Torpedo!" With a heart-rending scream, another transport ship on the surface was torpedoed to the side.

The ship was loaded with a load of steel destined for reprocessing in the UK, and it was a special steel of excellent condition.

Now the cabin is flooded, and because there is too much load, the ship directly overturned on its side on the sea.

Before the crew above could call for help, it flipped over, leaving only one bottom of the boat on the water.

In the distance of this transport ship, another transport ship broke into two parts, and sank so quickly that even the lifeboat did not have time to let go of one.

Farther away, two smoking, fire-blazing British transport ships were also sinking, and the people on them were desperately crying for help.

Compared with other transport ships, these two ships are obviously transporting people, and there are many people on them, all shouting one after another.

The people who shouted above were volunteer pilots from the United States who "volunteered" to come to Britain to help Britain continue to hold on to the Battle of Britain.

Unfortunately, they have not yet received their own planes, and as soon as they are in the sky with the German pilots, they will first have to take a cold shower in the Atlantic.

"Think of a way! If we go on like this, we're done! On the destroyer, the officer in charge of the GH-67 fleet said to the captain beside him.

"What can I do? The Germans know our transport lines! It's obvious! The captain of the destroyer replied depressedly.

It is no secret in the British Navy that things about German spies are not very secret, but if you don't personally experience this kind of thing, you still don't believe much in this kind of thing.

However, now, how can people not believe in such a thing about the GH-67 transport fleet?

----------

Brothers! 5th Update!