The naked eye vision of any nautical technician is not less than 1.0 (new standard 5.0), and the binocular corrected vision of engineers can reach 0.8 (new standard 4.8).

Type of ship and type of work:

International merchant ships, cargo ships, refrigerated transport ships, international ultra-low temperature ships, production and processing ships, port barges of the State Port Authority, etc.

Navigation sea area: North-South route, China-Japan-Korea route and international no-fly zone.

Brief introduction of Dalian Naval Staff University: PLA Naval Staff University, referred to as "Naval Staff University" and "Dalian Naval Staff University", is an adult institution of higher learning specializing in science and engineering. It belongs to the Naval Equipment Department of the Chinese People's Liberation Army, and its rank is unknown.