"We are considering options with underwater robots and divers": the Indonesian Navy is preparing an operation to raise the submarine Nanggala-402

The Indonesian Navy reports that it is preparing to lift the submarine Nanggala-402, which sank a few weeks ago, north of Bali. The chief of the information service of the Indonesian Navy, Julius Vijogono, said that the logistics of the operation are currently being worked out.

The reports say that the special vessels that will be involved in the process of lifting Nanggala-402 are concentrated in the nearest port. At the same time, it was noted that China has provided significant assistance to date. So, it is clarified that the Chinese ships gave the Indonesian command accurate data on the location of the sunken submarine, as well as its photographs. On the basis of these data, the information that the submarine has "lost its integrity" and is located at a depth of 838 m has been confirmed.

Julius Vijogono:

Also, the Chinese side offers documents with calculations of the details of the operation to raise the submarine. For example, these are calculations of load distribution at different levels of sea waves. Our formed team is ready to take this data into account.

At the same time, a representative of the Indonesian Navy noted that the issue of using robotic systems with manipulators is being considered. They will be needed to try to hook the submarine with special hooks.

However, another option is being considered. It consists in not raising the submarine, but raising the bodies of the dead Indonesian submariners to the surface.

Assistant Chief of Staff of the Indonesian Navy L. Muhammad Ali:

The operation will be difficult anyway. This does not yet allow us to speak exactly about its timing. We consider the option both with underwater robots, and with specially equipped divers. Our divers need special equipment and equipment to work at a depth of 838 m, where the submarine is located. While we are thinking about whether it is possible to replace them with robots. The work of people in any case is more flexible. But there are many complications here.

The operation will involve the ship SKK Migas, as well as at least three Chinese vessels: the tugboat Nantuo-195, the PRC naval rescue vessels Ocean Salvage and Scientific Salvage Tan Suo II. The last two vessels are said to be capable of lifting cargo from depths of up to 4,5 thousand meters. They have robotic underwater manipulators equipped with a remote control system.

Comments

[askort154]

China is rapidly gaining prestige in the world.

[private person]

China is rapidly gaining prestige in the world.

China is not gaining but already has weight and is reckoned with. It's just that the NAC have not yet shown themselves in real combat.

[askort154]

private person......China is not gaining but already has weight and is reckoned with.

I'm not talking about "reckoning" with its economy, and about the NAC. I mean that he took an active part in helping the state in its problem. Not many states will undertake to lift a boat from a depth of 838 meters, and this is the authority of the state, not to arrange "color revolutions", but to provide high-tech assistance.

[NDR-791]

Quote: askort154

Not many states will undertake to raise a boat from a depth of 838 m., And this is the authority of the state

Project Azorian in Chinese? If they succeed, then respect and respect. On the other hand, they would not be sure, they would not offer it.

[Popandos]

Divers at 838 meters !?
To what science has come!
Will they breathe liquid or mixture? How long will decompression take? A month in the pressure chamber?

[Orange bigg]

Better to have invented a safer technology for torpedo launches. There would be no tragedy either.

... As the author of the book “Red November. Spies of the Deep (Red November, Spies of the Deep) and other submarine and war fiction, and as a former US Navy combat swimmer and submariner, I have access to “inside information” on the missing Indonesian submarine Nanggala 402. This 1977 diesel submarine purchased from Germany disappeared on Wednesday 21 April.

... The commander of the Indonesian armed forces reported that the Nanggala disappeared about 50 nautical miles north of Bali. The Indonesian Navy has confirmed that the boat has requested a dive permit in order to conduct training launches of two torpedoes. An hour later, the commander of the training task force gave permission to fire, and the Nanggaly team filled the torpedo tubes with water. The chief of staff of the Indonesian Navy said that before the loss of communications, the boat fired training and combat torpedoes.

What could have caused the death of the Indonesian submarine? And how is this disaster similar to the accident of the Russian submarine Kursk in August 2000? The Indonesian Navy reported that the Nanggala could experience a power outage after diving to a depth of more than 600 meters, which is 100 meters more than its design depth. As the tragedy of the Kursk showed, training torpedo launches are also very dangerous.

... Like the Kursk, the Nanggala conducted training torpedo launches, and therefore more likely to break down weapons systems.

On August 12, 2000, the bow section of the Russian submarine Kursk exploded, killing most of the crew. During a training launch of an obsolete Type 65 torpedo, the Russians said that a leak in the torpedo's unstable propellants triggered the first explosion. They assumed that the torpedo was fed into a dirty tube of the vehicle a few seconds before launch, and the fuel ignited due to the contamination. But any torpedo operator, both NATO and Russian, knows very well that a torpedo is prepared and loaded into a clean torpedo tube several hours before a training launch. In addition, there were two civilian specialists from the Dagdizel military enterprise in the torpedo compartment, who monitored the exercise and would not allow the torpedo to be mishandled.

The exercise was watched by several high-ranking officers aboard the Kursk and the target ship Peter the Great. They were 30 miles apart. A Type 65 torpedo at top speed would hit the target in 30 minutes, but before that it would run out of fuel. Such an event could hardly have attracted the attention of high-ranking officials. Recent evidence indicates that the Kursk launched not the old Type 65 torpedo, but the newest top secret Shkval torpedo missile. The Toledo, an American spy submarine monitoring the exercise, was hiding nearby. For almost 20 years, Russian and NATO leaders hid the tragic events that took place at that time.

Interviews with numerous experts and officials confirm that the Shkval missile got stuck in a tube during launch. After activating the trigger, the "Shkval" had to turn off the rocket engine. But since the torpedo did not come out of the tube, it tore off the back cover of the torpedo tube, and two minutes later, the fire ignited the fuel in the other torpedoes, and a second, catastrophic explosion occurred. Submariners from the Toledo also point out that the Shkval could get stuck in the torpedo tube due to the contact or unintentional dangerous approach of the Kursk with their boat.

The second explosion destroyed the Kursk's bow compartments, but the aft compartments remained intact. 23 submariners were waiting for rescuers who never came to their aid.

https://inosmi.ru/military/20210502/249667463.html

[Popandos]

They assumed that the torpedo was fed into a dirty tube of the vehicle a few seconds before launch, and the fuel ignited due to the contamination.

I didn’t read further because it’s nonsense
Forgot TA sweep

[Orange bigg]

But in vain. They would know that

The Kursk launched not the old Type 65 torpedo, but the newest top secret Shkval missile-torpedo.

... the Shkval rocket got stuck in the tube during launch. After activating the trigger, the "Shkval" had to turn off the rocket engine. But since the torpedo did not come out of the tube, it tore off the back cover of the torpedo tube, and two minutes later, the fire ignited the fuel in the other torpedoes, and a second, catastrophic explosion occurred. Submariners from the Toledo also point out that the Shkval could get stuck in the torpedo tube due to the contact or unintentional dangerous approach of the Kursk with their boat.

[Piramidon]

Quote: Popandos

Divers at 838 meters !?
To what science has come!
Will they breathe liquid or mixture? How long will decompression take? A month in the pressure chamber?

So far, there are no spacesuits for working at this depth at all. The record for a dive in a rigid spacesuit is 610 meters. And even then the diver did not work there, but he was simply lowered and pulled out. By the way. When using such a spacesuit, decompression is not required, because the diver is in it like in a submarine, at normal atmospheric pressure.

Here only bathyscaphes with manipulators can do something.

[Popandos]

Such suits have existed for a long time, but with the help of them someone would at least have raised a boat from the bottom of the sea, they would not have heard.
But everything happens for the first time, but I can't imagine the technology of how in such a shell it is possible to lift a boat, which in addition broke into several parts.

[water]

The Canadian rigid NS-2000 spacesuit shown in the photo certainly allows the simplest diving work to be carried out better than it is done by the ROV (remotely operated unmanned underwater vehicle), but much worse than it is done by an ordinary deep-diving diver. At the same time, the submarine's sinking depth is not accessible either to a rigid spacesuit (working depth of 2000 feet) or to a deep-sea diver. Therefore, the TNLA will work on the inspection of the hull and the possible lifting of its small fragments, as well as the lifting of the bodies of submariners who are in accessible places. I believe that lifting to the surface of the hull will be done using specially designed and manufactured grips. The Chinese are great! They adopted the best practices of the USSR, therefore, if they get down to business, they will manage by the beginning of the autumn storms.

[CommanderDIVA]

Taking into account the participation of the PRC in the operation, most likely the Chinese offered Indonesia to hold this event for free, apparently with the aim of testing their equipment and ships, and training personnel using a practical example.

[impostor]

The depths are serious. Wouldn't have to save rescuers

[KSVK]

I wonder if there really is a technology for working in the KShSe at such depths? 500 meters seems to have been mastered. The record seems to be about 700.
It would be great to hear the set and composition of breathing mixtures for such depths.