With the increasing tension of global oil and natural gas energy, land mining has begun to large-scale special marine fields, and the scale of offshore oil and natural gas engineering projects has continued to expand. It is necessary to carry out electricity and communication from land to offshore oil platforms and between platforms The feedback and control of transmission and technical data have increased the demand for submarine cables. In addition to the large use of submarine cables in oil platforms, the development and utilization of islands has also increased the demand for submarine cables. The application of submarine cables in offshore wind power projects also becoming more widespread.