According to media reports, we are increasingly relying on the Internet, so the cable buried deep in the sea is an important foundation for the continuous development of globalization. These cables connect the whole world. These submarine cables are growing every year to maintain the development of science and technology . .

Statistics show that the global submarine cable has reached its peak since 1989. In the past 25 years, the submarine cable has rapidly developed from 155 km to 8.94 million km. Various information is transmitted to all corners of the world through submarine cables, just like the information age. The blood is flowing, and almost 95% of the information on the Internet goes through 50 mm thick cables that are routed between countries.

It is reported that the laying of submarine cables requires specially designed vessels that can carry thousands of miles of cables and route cables to the seabed during navigation. Since 1850, the engineers of the telecommunications company have tried to transfer the cables on the land to the sea. Later, Due to the limited land resources, the use of land cables also required the payment of expensive rents, which further promoted the birth of submarine cables. Early submarine cables were used in the field of communications.

With the advancement of technology, modern cables are made of fiber optic materials, and the speed of sending information is fast. It is only 50 mm thick. We have used polyethylene cable casings, and there are several layers of different structures inside, such as stranded steel wire and petroleum jelly. Optical fiber inside. The longest submarine cable in the world is called SEA-ME-WE 3, which means connecting Southeast Asia, the Middle East and Western Europe. The shortest submarine cable is located near Portugal. If the submarine cable is damaged, you need to send an underwater robot for maintenance. .

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