Submarine crews are undergoing more arduous training to sail farther from China, and it's taking a toll.

China’s submarine fleet, long noisy and outdated, is getting quieter and deadlier, a new analysis warns, as it closes the gap with the US within the First Island Chain, a string of islands that could ...

National-security officials say Chinese submarines and icebreakers pose a new military threat from the High North.

Article Summary - This piece unpacks how China’s undersea force is evolving from crude Soviet-inspired diesel boats into a “good enough” fleet built at serious scale. -While PLAN subs still lag ...

(CNN) — Russia and China have conducted their first-ever joint submarine patrol in the Pacific, according to reports in state-run media. The patrol by diesel-electric submarines began in early August, ...

Pakistan's Navy on December 17 launched its fourth Hangor-class submarine, the PNS Ghazi, at the Wuchang Shipbuilding Industry Group’s Shuangliu Base in Wuhan, marking the completion of construction ...

The Pakistan Navy expects its first Chinese-designed submarine to enter active service next year, the country's top admiral told Chinese state media, bolstering Beijing's bid to counter regional rival ...

North Korea's state media released photos Thursday of what it said was the hull of a nuclear submarine. Its leader denounced ...

(CNN) — Russia and China have conducted their first-ever joint submarine patrol in the Pacific, according to reports in state-run media. (CNN) — Russia and China have conducted their first-ever joint ...

Russian and Chinese submarines have carried out their first-ever joint patrol in the Asia-Pacific, the Russian navy's Pacific Fleet has said, building on a pattern of increasing military cooperation ...