The “noises” under the water during the operation to locate the submarine that has been missing since Sunday with five aboard near the wreck of the Titanic in the Atlantic Ocean, they have revived hopes that they may be found alive. However, experts who invoke the BBC they state that it is difficult to determine what these noises might be without the data.
But they are likely to be short, sharp, relatively high-frequency noises that caused by hitting a metal piece or hard object on the walls ship’s titanium.
This should be distinguishable from the general white noise of the ocean, especially if it has a regular pattern over time.
According to the British media outlet, it appears that the rescue operation was convinced enough by the sounds to follow them further, even moving the operations by ROV (Remotely Operated Vehicle) to a different location.
At the same time, Daily Mail it’s mentioned that the noises have raised hopes that the occupants are still alive and may be desperately banging on the sides of the submarine to locate the sounds.
“I don’t think they’re catching up”
“If people are alive, the mission of the robotic system should be done quickly to be able to locate it” pointed out, in the meantime, Grigoris Rousakis Director of Research, Department of Marine Geology and Geophysics IO at ELKETHE, speaking on Proto Program 91.6 and 105.8 and on the “Morning Party” show, regarding the missing submarine in the waters of the Atlantic, while he expressed the assessment that there is not enough time left to find it as the investigations have typically been delayed.
“The difficulty with it right now, if this thing is even on the bottom, it’s very difficult to locate it because the area is not flat, secondly it has wreckage from the Titanic. This means that the robot will go down, apart from the visual way it can see which is a few meters and after total darkness, with strong lighting it can see some meters, it has a radar on it, meaning the radar hits targets. If the target is the submarine or an iron or something from the Titanic, that needs searching. I don’t think they are catching up. I don’t think they have time to look to find it. In the first place, if it was left unruly by a blackout, that’s the good scenario, it went to the bottom drifted by some currents, since it has no engines to hold on, it drifted and may be further away now, not down there.” Mr. Rousakis said in this regard, according to ERT.
“It could be a dip angle 4 kilometers down and a kilometer away. For the robot to search for one kilometer, it takes days. It’s not easy to find. That’s the difficulty. I believe the withdrawal would be easy,” he added.
He also pointed out that the depth at which the investigations are being carried out is very great and that it is assumed that he did not have time to go down to the bottom in the hour and a half that he did the dive. “It needed more time, which means that something happened in mid-water before it reached the bottom,” argued Mr. Rousakis
In addition, he explained that most submarines have a mechanical system that puts some weights down and gains buoyancy, which is why they also use airplanes in the searches, so that if this has happened, it can be located on the submarine on the surface. “This is the good scenario, that they were conscious and took some actions to be able to extricate themselves,” he noted.
Another good scenario would be that it had become involved in the wreckage of the Titanic, as it was heard in the past days that it might have happened. In this case and in quick response time, the robotic system, the ROV is sent to locate it. In this particular case, Mr. Rousakis pointed out, three days had already passed before an ROV was sent.
“I can’t know what happened but usually you understand immediately that you don’t have communication. You don’t wait hours. The system on the sub is not transmitting, so you don’t know its location, so you immediately know something has happened. You don’t need eight hours,” he said, emphasizing that the hours they have at their disposal are few.
“This is a classic safety rule for submarines. That they should be escorted with an ROV on the ships or somewhere, if something happens, immediately send that,” he noted.
“I don’t know about that because it goes deep, there’s usually an intercom, you can and they talk to you and there’s a system that sends a signal from its position and the vessel that’s on the surface receives it, so you know where it is in terms of the position of the vessel and it’s about depth,” he added.
As for the function of the submersible, Mr. Rousakis described it as a submarine that goes autonomously. “It has some kind of communication system, with signals it sends and receives from above. This robot now on its way from France to the rescue is wired. They are so-called ROVs, so they can go without risk to human life. That is why, in recent years, submarines have gone out of use, at least for professional and research purposes. There is no point in going in, going there, when the ROV is there, which can operate 24 hours a day without any risk. There’s no point in going into this thing, going to the Titanic when you can have a robot and see it much better,” said Mr. Rousakis. However, he admitted that “the experience is awesome” having himself participated in an expedition, in which he was at a depth of 440 meters for 6 hours.
Source: News Beast
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