Submarine steams in the sea

Two towboats attached to a naval submarine flotilla under the PLA Northern Theater Command are about to tow a submarine to bear off a port during a training exercise on May 6, 2023. (eng.chinamil.com.cn/Photo by Shi Jialong)

A submarine attached to a naval submarine flotilla under the PLA Northern Theater Command steams in the sea during a training exercise on May 6, 2023. (eng.chinamil.com.cn/Photo by Shi Jialong)