Chapter 399： Snorkel

Captain Prien’s submarine was the first to reach Scarpa Bay. As early as the early morning, he crossed the waterway and arrived here to lurch.

At that time, if he wanted to attack all the warships in the harbor, he chose whatever he wanted, and of course he would put his target first on the Royal Ark carrier.

Or, other aircraft carriers, as well as battleships, pick up a big challenge, and if they launch four torpedoes at a time, they don’t believe they can’t kill the opponent.

However, he did not move. If he did at that time, it would disturb the British here and make them raise their guard. The air raid this morning would be impossible.

According to the plan, as long as one's own bombers start dropping bombs, the U-47 submarine can move.

In fact, he did the same, sitting under the water and keeping silent. In the early morning, when he heard the first explosion on the surface of the water, the officers and soldiers in the submarine immediately took action.

Start the engine and float to the depth of the periscope! The sailors prepared quickly.

More than 800 tons of submarine, huge body, floating slowly, the two AEGGU460/8-276 electric motors at the tail, burst out the maximum horsepower of 750 horsepower, the propeller at the tail, quickly reached 296 per minute The maximum speed of rotation.

At this time, there is no need to worry about the other party's anti-submarine system. After all, the other party has been bombed and it is too late to deal with the overhead bomber. How can you manage the underwater situation? The sound of explosions will cover the sound of the submarine. live.

Now, they must act quickly, take up positions, and prepare to attack!

In the torpedo compartment at the bow, the sailors are ready, just waiting for the fierce attack to begin!

Operating a submarine is not as easy as driving a car. Although they have already operated at the most skilled speed, it took about three minutes for this submarine to level off at a depth of ten meters. Then, the submarine On the bridge of the ship, the periscope stretched out.

Just as the periscope stretched out, on the side of the submarine's bridge, a thicker tube was slowly rising.

This tube is much thicker than the periscope. When it is not in use, it is placed vertically on the submarine hull.

And now, the hydraulic device on the side made the thick tube stand upright, the root turned, and the automatic locking pin fixed the tube to the back of the podium enclosure.

Periscopes have been used on submarines for a long time. It can be said that optical devices such as periscopes have been equipped since submarines entered the Navy sequence.

However, this thicker tube is now confidential. For submarines, it is equipment that greatly increases the combat capability of submarines. Its scientific name is called submarine snorkel.

On the water, the submarine uses diesel engines to sail while charging its own batteries, while underwater, they can only use batteries.

The power of the battery is precious. For example, if you sail at the highest speed, you can’t last for an hour.

Therefore, the submarines of this era spend most of their time sailing on the water, and only dive underwater when they need to attack.

However, surface navigation is very dangerous, and the ubiquitous anti-submarine aircraft is the biggest threat to submarines. In this way, it is quite urgent to allow submarines to sail underwater and use diesel engines.

This device is the snorkel.

Diesel engines cannot sail underwater because they need to inhale air and exhaust exhaust gas at the same time. Now, this pipe is here to do this work.

The inside of this pipe is divided into two halves, half for intake and half for exhaust.

As long as the pipe can pass to the outside, it can exchange with the outside air. In this way, although the submarine has not yet surfaced, the diesel engine at the tail can already be started!

For the captain of the submarine, keeping his battery full at all times is what he hopes most. At that time, he has the most confidence.

Since only a small snorkel is exposed, it is also difficult to be spotted by surface ships.

There is a floating mechanism on the top of the intake pipe, which is similar to the floating ball in a toilet.

When the mast is in the water, the floating mechanism will automatically close and block the intake pipe, so that outside seawater will not enter the submarine through the intake pipe. When the mast is exposed to the surface of the water, the floating mechanism can be opened by itself, so that the air inlet pipe can communicate with the outside.

Now, as the pipe continues to rotate, soon, when it turns to the vertical position, the top is exposed, the vent pipe opens automatically, and the sea water remaining in the intake pipe flows into the auxiliary ballast tank on the boat .

"Start the diesel engine" Captain Prien shouted, while staring at the periscope in front of his eyes, almost synchronized, after the snorkel went out, the periscope went out.

Behind, the two MAN company's 1400 horsepower diesel engines made a deep sound. This kind of sound is quite familiar to the submarine soldiers.

After the diesel engine is started, the exhaust pressure blows out the seawater in the exhaust pipe. A faint green smoke appeared on the sea.

In history, Germany only conducted experiments on this device in 43 years and installed it on a submarine produced in 44 years. In fact, this technology appeared very early.

For example, as early as 1938, the Dutch Navy conducted a series of tests for submarines in periscope depth navigation by using a single-pipe ventilation system to achieve underwater diesel engine propulsion, giving the submarine almost a theoretically unlimited underwater range.

It is a pity that the German Navy did not notice the importance of this invention at first In their eyes, this device is just a means for submarine air circulation.

Now, the technology of this snorkel was proposed by Cyrenk at a certain naval equipment meeting. After the development of experts, it has matured and has become a killer of the German naval submarine force.

The diesel engine at the rear rumbling, and the atmosphere in front is very tense, for the submarine soldiers, their attack is about to begin.

After raising the periscope, Captain Prien immediately began to observe the surface of the sea. At this time, the battleships were on fire, and there was smoke billowing everywhere. On the surface, there was almost no valuable target in sight.

Leave me something! Captain Prien was extremely depressed.

After turning around, Captain Prien was still happy: "Left full rudder, ready to attack!"

On the sea, a few kilometers away from the port, there is still a big guy. Although Prien is unable to distinguish the specific model and name of the opponent, although it is a problem, it is definitely a large battleship!

This battleship is smoking black smoke, but it hasn't sunk yet, just let yourself send it to hell!

Left full rudder! The tail of the submarine stirred the current, which belonged to the hunt of the U-47 submarine. No, the massacre officially began!

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