Submarine-mounted cable is a communication link between the land and the seabed, and is widely used in the fields of marine engineering, telecommunication and communication, and marine scientific research. Its application scope and scene mainly includes the following aspects:

1. Telecommunication: Submarine cable is an important part of the global communication network, which facilitates long-distance communication between countries. Through the submarine cable, global interconnection can be realized, providing a good communication basis for people's social, commercial activities, information dissemination, etc. 2.

2. Marine resources development: submarine cable also provides technical support for the development of marine resources, such as submarine oil drilling, submarine mineral exploration. Through the submarine cable, can realize the remote control equipment, data transmission, monitoring the environment and other functions, for the effective use of marine resources to provide a technical guarantee.

3. Marine scientific research: submarine cable in the field of marine scientific research also has important applications, such as seabed topographic mapping, marine biological monitoring, marine environmental monitoring and so on. Through the submarine cable, can realize the real-time monitoring of the marine environment and data transmission, for scientists to study the ocean's physical, chemical, biological and other aspects of the important data support.

4. Marine disaster monitoring and early warning: submarine cable can also be used to monitor marine disasters, such as tsunamis, earthquakes and so on. Through the submarine cable, it can realize the real-time monitoring of the seabed geology, seabed topography, etc., and provide early warning of possible marine disasters, so as to provide security for the safety of coastal areas.

5. Submarine energy transmission: with the development of clean energy, submarine cable is also used in the field of submarine energy transmission, such as ocean wind energy, ocean tidal energy. Through the submarine cable, the energy in the sea can be transmitted to land, providing technical support for the utilization of clean energy.

In general, the application scope and scene of submarine installed cable is very wide, involving a number of industry sectors, in promoting the development of marine science and technology, promote economic cooperation, safeguard the marine environment plays an important role. With the continuous progress of science and technology and human needs for marine resources continue to grow, the application of submarine installed cable will be more and more broad prospects.