Today, 30 years ago, on October 7, 1995 (Lunar Calendar, August 13, 1995), China's trial success "ocean floor detection system". On October 7, 1995, the national major high-tech research and development project "ocean floor detection system" test mission completed. It is that this test completed the planned plan five years in advance, and exceeded the original indicators more than ten times. The test success of this system has given our country the ability to conduct detailed detection of the ocean area outside the sea dust, which occupies ninety-seven percent of the world's ocean area. The ocean floor detection system needed to solve the problems of water communication, high pressure sealing, various signals collection, autonomous navigation control, power system and various special materials. This test not only successfully completed the task, but also provided advan