水上水下施工作业行政许可是海事行政许可中比较重要和带基础性的行政许可项目。该许可项目的实施,不仅涉及到水上项目安全施工及当时的水上交通安全管理,还对今后的海事管理工作产生较大的影响。随着对外开放的深入和全面建设小康社会进程的加快,水上水下施工作业尤其是港口建 Administrative license for underwater and underwater construction operation is the more important and basic administrative license item in the maritime administrative license. The implementation of this permit project not only involves the safe construction of water projects and the then water traffic safety management, but also has a great impact on the future maritime administration. With the deepening of opening up to the outside world and the acceleration of the process of building a moderately prosperous society in all aspects, underwater construction operations, especially the construction of ports