On this day, 43 years ago, on October 16, 1982 (August 30, 1982, the lunar calendar), my country's submarine successfully launched a launch vehicle into a predetermined sea area. On October 16, 1982, my country's submarine successfully launched a carrier rocket into a predetermined sea area. From May 1980, when my country launched a launch vehicle into the Pacific Ocean to the successful underwater launch of the submarine, it marked a new development in my country's launch vehicle technology. The new launch vehicle launched this time uses new technologies, new fuels, and new materials. The launching device on the submarine was developed by my country itself. Various domestically produced precision instruments and instruments matched with electronic computers accurately receive, process and transmit various information from air, ground and sea survey fleets, and obtain various data during the flight of launch vehicles, which is of great significance to the further development of my country's aerospace industry.