No, on May 2 of the year before last, Xinhua News Agency released a news:

"According to the information provided by the Navy, a conventionally powered submarine of the Chinese Navy was recently wrecked due to mechanical failure while conducting training in our territorial waters east of Neichangshan, and all 70 officers and men on board were unfortunately killed. The leaders of the Central Military Commission, the General Headquarters, and the units concerned attached great importance to the handling of the accident, expressed deep condolences for the martyrs, and expressed cordial sympathy to their families. Now the submarine has been towed back to port, and the aftermath is being properly handled. ”

It is said that after the wrecked submarine No. 471 was towed back to port, it was found that the hull of the submarine was intact, and all 70 crew members on board were sacrificed in battle positions, without moving in the slightest, and it did not experience a big explosion like the submarine "Kursk" of country E.

The logbook was found on the boat, which ended on 16 April, proving that the sailors died on that day.

The 471 submarine is a Type 035 diesel-electric submarine and China's first self-designed and built conventionally powered torpedo attack submarine, which NATO calls the "Ming" class.

Approved for development in 1967, this type of submarine is an improved design based on the Type 033 submarine that China imitated the Soviet R-class submarine, so the shape is very similar to the R-class/Type 033 submarine.

The first boat was built at Wuchang Shipyard in October 1969, launched in July 1971, and delivered to the Navy in April 1974. From the third boat, the design was modified and used as the final standard for the subsequent boats.

On December 30, 1983, the "035 Medium Conventional Power Torpedo Attack Submarine Overall Design Appraisal Signing Ceremony" was held. In 1985, the development of an improved and improved type, namely the Type 035G submarine, began. One of the submarines was also retrofitted with an AIP system and used as an AIP system test vessel. In addition, after the entry into service of the newer Type 039 submarines, in order to compensate for the number of submarines, an improved Type 035B submarine is still being built, and even two years ago, the Navy received an additional order for modified submarines.

The total number of Chinese 035 series submarines can reach 20 to 30 units, which is the main submarine in the transitional period.

This type of boat has a displacement of 1,585 tons on the water, 2,110 tons under the water, a length of 76 meters, a width of 6 meters, a draft of 1 meter, and a depth of 6 meters. The maximum depth of the submarine is 300 meters, equipped with 2 medium-speed diesel engines, two-shaft double-five-blade propellers, the speed on the water is 15 knots, 18 knots underwater, and the endurance is 13,000 nautical miles/8 knots, 330 nautical miles/4 knots underwater. Self-sustaining for 60 days.

Armed with six 533-mm torpedo tubes in the bow, it can carry 18 torpedoes. The main use of Yu-1A 533 mm self-guided anti-ship torpedo, Yu-3 A/B 533 mm self-guided anti-submarine / anti-ship torpedo, Yu-4 A/B 533 mm self-guided anti-ship torpedo.

So, what caused 70 officers and soldiers to die in battle positions in an instant, without any reaction?

Later, after investigation and restoration, on April 16 of that year, the 471 submarine recharged the motor used for submersion on the way back to the Daoqing base. Charging is done by the submarine's diesel generator, which needs to burn a large amount of oxygen, and the submarine has limited space, so in the past, the submarine was generally surfaced, the snorkel and the hatch were opened, and the air flowed naturally into the cabin for the diesel engine.

In World War II, Germany invented the snorkel, which enabled the submarine to complete the charge in a semi-submersible state, which greatly improved the concealment of the submarine. This equipment also became a common equipment for conventional submarines thereafter.

On that day, the 471 submarine floated to a "periscope depth" close to the surface of the sea, and then stretched the snorkel and air intake valve above the command platform out of the sea surface to suck in air. There is no problem with this operation.

However, after investigation, it was said that the sea surface was strong at that time, and the seawater poured into the snorkel pipe, and in order to prevent the influx of seawater, the snorkel was designed with an automatic closing valve. It was this valve that closed automatically, or perhaps the intake valve did not open due to a mechanical failure.

In short, the intake valve was closed at this critical moment, but the corresponding diesel engine was activated, and this large oxygen guster instantly ignited the oxygen in the boat, and the oxygen content of the gas in the boat dropped to zero in less than two minutes.

All personnel suffocated without reacting.

It was also found in the submarine that according to the snorkel charging procedure, the hatch covers of each compartment were closed, and because the air was absorbed and the air pressure was unbalanced, it was impossible for the hatch to be opened from the inside under negative pressure, so even if there were officers and men trying to escape, it was impossible.

Because the 471 submarine was sailing "silently" at that time, all telecommunications with the outside world were cut off, so when all the officers and men died, the fleet still did not know that the submarine had gone wrong.

It was not until 26 April, 10 days after the accident, that the 471 submarine, which was still floating in a semi-submersible at the periscope depth, was spotted by a passing fishing boat. The frightened fishermen rushed to report to the Navy.

When the Navy sent a ship to the scene, it was found that the submarine had only the periscope snorkel out of the water, and the unpowered submarine was floating helplessly underwater. Upon preliminary examination, the submarine was not damaged, and the deceased confirmed that it was all acute asphyxiation.

In fact, submarine accidents are not uncommon, and the navies of all countries have experienced the tragedy of submarine accidents. According to incomplete statistics, from 1940 to 1988, there were 628 accidents and 285 sinking.

From the end of World War II to 1990, there were about 91 non-combat sinking accidents of submarines in various countries (including 15 nuclear submarines, more than 600 deaths; Conventional submarines 76 up). There are many reasons for the sinking of nuclear submarines, and among conventional submarines, the top three are collision, water ingress and unknown causes.

The 471 submarine is also not the first wrecked submarine of the Chinese Navy. On December 1, 1959, the young Chinese submarine force was in training, due to problems in the coordination of ships and ships, the No. 528 conventional submarine collided with the frigate "Hengyang" when it was floating, and the submarine sank to the bottom of the sea at a depth of 40 meters, causing the death of 38 submariners.

Whether it is the 471 submarine or the 528 submarine, they are all sacrifices made by the Chinese Navy on the road to the open sea, and these young submariners sacrificed their lives for their beliefs in the vast sea frontier, and they are the silent sea soul of the development of the People's Navy of the Republic.

However, here, Yang Wenbin actually saw the 471 submarine of our army.

However, this submarine participated in this joint military exercise and performed well.

It turned out that the accident of the 471 submarine did not stop the development of the Chinese Navy.

Two years ago, on 29 April, just 13 days after the accident, dozens of officers and men were ordered to reorganize the 471 submarine.

In August of the following year, the 471 submarine was ordered to enter the factory for modification. The 471 submarine became the first submarine of its type to be modernized.

This voyage was the first sea test of the newly formed 471 submarine.

Whether it is the 471 submarine, which was the focus of national attention two years ago and brought shame and regret to the Chinese Navy, or the 471 submarine, which has now regained its strength and won honor and satisfaction for the Chinese Navy:

I believe that the Motherland will not forget them! I believe that my comrades-in-arms will not forget them! Trust your loved ones not to forget them!

Yang Wenbin's ears rang "Don't Ask Me Where I Am - Song of the Submariner":

"Don't ask me where I am?

I can't tell you if I ask,

We are the submariners of the Chinese Navy,

Sail in the depths of the ocean.

You say you can't hear my words,

All I can tell you is that I salute you.

The sacred mission rests on my shoulders,

The pride of the hero is hidden in my heart,

Please, please remember my words, this sentence,

We are always with victory!

Ah, together! Ah, together!

We are always with victory, together.

Don't ask me where I am?

I can't tell you if I ask,

We are the submariners of the Chinese Navy,

Sail in the boundless oceans.

You say you can't see the track of my flag,

All I can tell you is that I am the winning bolt,

Eager to forge glory in the flames of war,

Prefer to dedicate peace to the earth.

Please, please believe me in this sentence, this sentence,

We are always with victory.

Ah, together! Ah, together!

We are always with victory, together.

Ah, together! Ah, together!

We are always with victory, together, ah, together! ”