Diving, as a means of human struggle with nature, has become an independent technical discipline with the continuous development of human social production and science and technology. Especially in the past 20 years, the world population has increased sharply and land resources are in urgent need. Countries all over the world, especially developed countries, have turned their attention to the important space for human survival - the ocean. With human understanding of the strategic significance of the ocean and the development of marine resources, the Ocean has become a new focus of international political, economic and military struggle. Therefore, diving technology, the golden key to open the door of the treasure house of the world's marine resources, has attracted the attention of countries all over the world and developed rapidly like other science and technology.
China's diving technology was a blank before liberation. After liberation, especially since the 1970s, with the rapid development of national economic construction, national defense construction and science and technology, diving technology, including diving, diving equipment and diving operation, has developed rapidly.
Diving technology has become an indispensable technical category in economic construction, national defense construction and scientific research. It is widely used in submarine rescue, sunken ship salvage, underwater survey, channel cleaning, underwater blasting, marine scientific investigation and test, cable laying, bridge construction and other fields, as well as mariculture and fishing.
