Iron-blooded Hero Li Yunlong

Because the Third Fleet has already made preparations, the direction, area, and angle of the entire Songhu defense line position are already known, so they can fire without seeing the target position!

"fire!"

Hebian Ersanlang said without hesitation.

"Boom boom boom... whoosh whoosh..."

Cannonballs quickly escaped from the barrel of the warship, and then flew to the battlefield of the Songhu Battle.

"Boom...bongbongbong..."

The shells fell, setting off bursts of violent explosions.

Many attacking predators were attacked by artillery fire, and they fell to the ground and sacrificed heroically before they could dodge.

Although the thick fog blocked the sight of the warship, it did not affect their firing.

When these Japanese warships fired and clamored, they had no idea that at the mouth of the Yangtze River, a dark submarine was slowly approaching the Japanese Third Fleet.

In Qianlong.

Li Yunlong was directing the submarine to move forward slowly at this time. When it was traveling for nearly a few hundred meters, a red dot suddenly appeared on the screen of the central control!

The target has appeared!

PS: In the third update, I strongly recommend the great anti-war book "Snow Leopard: War of Wolves". Leng Feng travels to the anti-Japanese period, fights devils and destroys great powers, and prevents the Nanjing Massacre from happening. Please collect and support. .

Chapter 671 Hidden dragon attack, hit by a cannonball (fourth more, please subscribe)

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The Qianlong submarine is not only the world's first nuclear submarine, but also the first nuclear submarine equipped with sonar and radar.Equipped with one S-2 radar, AN/BQS-1 active sonar array and AN/BQR-4 passive sonar array.

Sonar is the transliteration of the English abbreviation "SONAR". It is an electronic device that uses the propagation characteristics of sound waves underwater to complete underwater detection and communication tasks through electro-acoustic conversion and information processing.

In general, many warships of World War II were equipped with sonar devices, but these were passive sonar_devices.

The so-called passive sonar is that the sonar passively receives the radiated noise generated by underwater targets such as ships and the signals emitted by underwater acoustic equipment to determine the azimuth and distance of the target.It evolved from a simple hydrophone and is especially suitable for submarines that cannot expose themselves by sounding but must detect enemy ship activities.

To put it simply, when some underwater objects make a sound, it will be received by the sonar system and then the target position will be known, that is, if the target ship does not occur, the sonar system will not be able to receive it.

The warships of the Japanese Third Fleet are all equipped with passive sonar.

"Drip drip..."

At this time, several red dots appeared on the screen of the Qianlong, making beeping sounds continuously.

This is a warship of the Japanese Third Fleet!

Li Yunlong looked at the screen and murmured to himself: "Hehe, with this radar system, the Japanese Third Fleet can be wiped out in one fell swoop!"

This time, the Third Fleet gathered in the waters around Shanghai is very powerful, with 1 light cruiser, 3 destroyers, 2 coastal defense ships, and 13 gunboats.

Originally, the Third Fleet was responsible for the security and offense of the Huaxia Coast, but it was only because the Iron-Blooded Swordsman was approaching Shanghai that the Japanese army gathered the Third Fleet on the coast of Shanghai.

"All the crew obey my orders and prepare to attack the Japanese fleet!" Li Yunlong said to all the members of the submarine through the communication system in the submarine: "This is the first battle of our Jagged Sword Division Navy! Be sure to fight beautifully!"

"At this time, it's time for us to avenge our Chinese navy!"

When the Anti-Japanese War broke out, the Huaxia Navy had only 74 ships of various types, mainly some light cruisers, gunboats and torpedo boats.Among them, the largest displacement is 3000 tons, the smallest is only 300 tons, and the total displacement is about 5.9 tons.

而同时，日军海军有舰艇285艘，包括9艘战列舰、4艘航空母舰、12艘重巡洋舰、13艘轻巡洋舰、70艘驱逐舰等，总排水量约115.3万吨。

This is a very different confrontation. In the end, after many fierce confrontations, most of the main battleships have been sacrificed, so the Japanese navy is invincible in China.

Now, Li Yunlong wants to avenge tens of thousands of brave naval officers and soldiers in China!

Raise the prestige of our country and fight the Japanese invaders bloodily!

"Through the radar, the target is locked!"

"The torpedo is loaded!"

"everything's ready!"

Li Yunlong stood in front of the headquarters, staring at the red dot on the screen. After observing for a while, he immediately said in a confident voice, "Fire!"

Immediately, a red button on the command screen was pressed!

"Snapped!"

The pressing of this button means that the Jagged Sword Master has fought the first battle of the navy.

"Whoosh whoosh..."

As the button was pressed, two torpedoes mounted on the Qianlong nuclear submarine flew out, flying towards the target ship at an extremely fast speed!

"Grrrrrrrrrrr..."

Under the flying torpedo missiles, the water in the Yangtze River kept rolling, sending out a series of white bubbles.

In just a split second, the two torpedoes directly hit the target ship.

This is a destroyer.

A destroyer is a multi-purpose warship, which can not only serve as an offensive assault mission in the naval fleet formation, but also undertake the air defense and anti-submarine escort missions of the combat formation, and can also serve as a supporting force in landing and anti-landing operations. The main responsibilities are as follows: Escort is the core, and at the same time, it has reconnaissance patrol alert, mine laying, and attack on shore targets.