The reason why my country's infrastructure project has achieved significant achievements is closely related to the lifting industry. South Korea was helpless at that time, the Sewol shipwrecked, weighing 6,800 tons. It was still my country who successfully salvaged it, and it took only 6 days. So, how did our country do it?
salvage weighs about 6,800 tons. The Swage wreck
In recent years, my country's high-speed rail, wind power generation and other projects have reached the world's advanced level. The reason why it has such capabilities is that the domestic lifting industry has made outstanding contributions. my country's lifting tonnage has reached a terrifying level. Just like the shipwreck accident in South Korea in 2014, it was successfully salvaged by China.
The Sewol was once a Japanese ship. It was sold to South Korea in October 2012. After South Korea's transformation, it was officially renamed the Sewol and was put into operation in 2013. Not only that, this ship is the largest of its kind, but an accident occurred when it was in operation for one year.
There are many speculations about the cause of this accident, but what exactly caused it is, and you need to wait until it is salvaged before you can know. However, it is certain that the number of deaths in this time is large, and there are still people whose whereabouts are unknown. In addition, the captain and crew also ran away when the situation was not good, regardless of the safety of the people inside the ship.
In April 2015, on the first anniversary of the shipwreck, South Korea was under pressure to formally decide to salvage the ship, searched for the cause and found the missing person. But before that, South Korea had no experience in salvage before, so it publicly bid for the public. At that time, the total length of the ship was 145 meters, and the idled displacement of could reach 6835 tons. and where it sinks, the sea water depth is 45 meters, making it extremely difficult to salvage. was finally the domestic Shanghai Salvage Bureau successfully bid for , and the order was signed for 500 million yuan.
On August 12, 2015, the Shanghai salvage team officially went to South Korea. And according to South Korea's requirements, the remains of the deceased must be protected and the ship cannot be destroyed. Therefore, China decided to use a tilt of 90 degrees to salvage. At the same time, my country salvages according to the data given by South Korea. During the salvage process, it was found that the actual situation did not match the data.
First of all, the seabed is not silt at all, but heavy rocks; secondly, the actual weight of the Sewol is much heavier than the data given by South Korea, and even the center of gravity is not accurate. this causes greater trouble for salvage personnel. In order to obtain real data, our country's salvage team went to the water for investigation.
China first determined the location of the shipwreck, and then used underwater remote control to conduct investigations with more than 100 divers. At the same time, in order to solve this problem as soon as possible, the watering personnel were divided into three batches to ensure uninterrupted progress. After the investigation is completed, we must make sufficient preparations before formal salvage. After the series of preparations of
are completed, my country's first opens a vent for the hull and inflates it into the cabin. In this way, the buoyancy of the ship can be used to make the ship's buoyancy exceed the weight of the ship itself, which can reduce a lot of weight during salvage. Then use a wire rope to lift the ship and place it in a safe area first. Then drag it into semi-submersible , drain it and salvage it.
Chinese team only took 6 days to salvage
The reason why this ship was successfully salvaged was mainly due to the preliminary preparations of the Shanghai salvage team. They had dispatched more than 3,000 ships in , and had nearly 13,000 hours of underwater operations. There were 350 employees involved in this salvage, and they worked continuously for 24 hours. At that time, some people had doubts about China's professional level, and China's successful salvage also proved its strength.
And, the salvage task of was officially launched on March 22, 2017, and the ship was released from water on March 3 and 28, which took only 6 days, This is the speed of China. Not only that, after the salvage was successful, Chinese enterprises also sent the ship back with the white marlin. The original plan for this return was 8 hours, but it only took 7 hours when it finally arrived smoothly.
, however, in the end, when calculating the expenditure, the Shanghai salvage team found that the cost of this time was as high as 1.6 billion , minus the 500 million yuan paid by South Korea, which means that also lost 1.1 billion yuan.
