A submarine attached to a submarine flotilla with the navy under the PLA Northern Theater Command steams in the company of a towboat during a recent day-and-night maritime combat training exercise. (eng.chinamil.com.cn/Photo by Wu Haodong)
A submarine attached to a submarine flotilla with the navy under the PLA Northern Theater Command steams in the company of a towboat during a recent day-and-night maritime combat training exercise. (eng.chinamil.com.cn/Photo by Wu Haodong)