1　General Provisions

1.0.1　This Code is developed with an objective of establishing a unified standard for submarine cable system construction and to ensure that submarine cable projects are technologically advanced，safe，reliable，economical，rational，energy-saving，and environment-friendly and compliant with relevant national policies.

1.0.2　This Code is applicable to the engineering design of submarine cable line，submarine cable digital transmission systems，and relevant auxiliary systems within the territorial waters of China.

1.0.3　Design of submarine cable systems shall be based on a comparison of multiple schemes so as to improve economic efficiency and reduce cost wherever possible.

1.0.4　Optical fiber submarine cable systems shall be built based on overall planning，joint construction，and resource sharing to meet the requirement of building a resource-saving and environmental-friendly society.

1.0.5　Equipment and materials used in the design shall meet the requirements of relevant current national and industrial technical standards.

1.0.6　For optical fiber submarine cable systems in areas where seismic fortification intensity is 7 degrees or above，the equipment shall meet seismic performance requirements for communication networks.

1.0.7　Design of submarine cable systems shall comply with not only the requirements stipulated in this Code，but also those in the current relevant ones of the nation.