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| PLAN Submarine Force | |
|---|---|
| Unit name | PLAN Submarine Force |
| Native name | 中国人民解放军海军潜艇部队 |
| Country | People's Republic of China |
| Branch | People's Liberation Army Navy |
| Type | Submarine force |
| Role | Undersea warfare, sea denial, strategic deterrence |
| Garrison | Qingdao, Sanya, Zhanjiang |
| Notable commanders | Liu Xiaojiang, Shen Jinlong, Wu Shengli |
PLAN Submarine Force is the submarine arm of the People's Liberation Army Navy, responsible for undersea warfare, sea denial, and strategic nuclear deterrence. The force operates a mixture of ballistic missile, guided-missile, and attack submarines, and supports operations across the East China Sea, South China Sea, Yellow Sea, and beyond. It is integrated with the PLA Navy's surface, air, and rocket forces and interfaces with provincial and central maritime administrations.
The submarine arm traces roots to People's Liberation Army Navy expansion in the 1950s and 1960s, linked to assistance from Soviet Union advisors and transfers under bilateral agreements. Early milestones include commissioning of Type 031 and Romeo-class units, influenced by Soviet submarine doctrine and experience from incidents such as the Hainan Island incident maritime tensions. Cold War-era developments paralleled shifts in Sino-Soviet split geopolitics, drawing operational lessons from Korean War naval actions and Vietnam War coastal campaigns. Post-1978 reforms under leaders including Deng Xiaoping prioritized modernization, procurement, and indigenous design programs such as the Type 035 and Type 039 families. Strategic escalation toward sea-based nuclear deterrence culminated in deployment of Type 092 (Xia-class) and later Type 094 (Jin-class), influenced by nuclear posture debates in forums like Six-Party Talks and interactions with United States Navy presence in the Western Pacific. Incidents and modernization drives during the 1990s and 2000s intersected with regional disputes involving Taiwan Strait, Diaoyu/Senkaku Islands tensions, and maritime law developments under United Nations Convention on the Law of the Sea.
Command of the submarine arm is under the People's Liberation Army Navy chain, coordinated with the Central Military Commission and theater commands such as the Southern Theater Command, Northern Theater Command, and Eastern Theater Command. The force is organized into flotillas and brigades based at major bases like Qingdao Naval Base, Yulin Naval Base, and Zhanjiang Naval Base, with specialized units aligned to strategic tasks including nuclear deterrent patrols, anti-access/area denial missions, and intelligence collection for agencies like the Ministry of State Security and People's Liberation Army Rocket Force. Leadership has included senior officers promoted through posts in fleets—North Sea Fleet, East Sea Fleet, and South Sea Fleet—and advisory ties to defense industry organizations such as China Shipbuilding Industry Corporation and the People's Liberation Army General Armaments Department.
The fleet fields multiple classes: nuclear-powered ballistic missile submarines (Type 094 (Jin-class), Type 092 (Xia-class)), nuclear-powered attack submarines (Type 093 (Shang-class), Type 091 (Han-class)), and diesel-electric boats (Type 039 (Song-class), Type 035 (Ming-class), Kilo-class submarine imports). Emerging classes and experimental designs include air-independent propulsion derivatives like Type 039A (Yuan-class), and prototypes linked to research institutions such as the China Ship Development Corporation and naval design bureaus. Armament suites feature submarine-launched ballistic missiles linked to strategic programs like JL-2 (JuLang-2), anti-ship cruise missiles comparable to YJ-18, torpedo systems influenced by Whitehead (torpedo) lineage, and sensors including legacy passive arrays and newer towed-array sonar systems developed through collaborations with defense research bodies and firms like China Electronics Technology Group Corporation.
Operational posture includes peacetime patrols, deterrent patrols for strategic submarines, and exercises coordinated with surface and air assets during joint drills such as Joint Sea and Joint Sword series. Deployments have increased presence in contested waters including the South China Sea, East China Sea, and extended operations into the Indian Ocean and western Pacific, intersecting with Freedom of Navigation operations by foreign navies including the United States], [Royal Navy, and Japan Maritime Self-Defense Force. Submarines have supported anti-piracy missions in the Gulf of Aden and participated in multinational exercises with partners like Russia and Pakistan Navy. Incidents, search-and-rescue operations, and intelligence encounters involve coordination with maritime agencies such as the China Coast Guard and diplomatic interactions with governments including Philippines and Vietnam.
Training pipelines run through institutions including the Dalian Naval Academy, Naval University of Engineering, and fleet training centers in Qingdao and Sanya. Doctrine emphasizes sea denial, survivable nuclear deterrent patrols, and anti-surface/anti-submarine warfare tactics derived from studies of Cold War submarine operations, Battle of the Atlantic ASW history, and contemporary lessons from encounters with United States Pacific Fleet. Personnel selection and development draw from technical institutes and programs run by Ministry of National Defense, with cross-training alongside People's Liberation Army Air Force and People's Liberation Army Ground Force liaison officers. Specialized crews for SSBN patrols undergo extended at-sea rotation protocols modeled after practices found in Russian Navy and French Navy submarine forces.
Major submarine bases include Qingdao Naval Base, Yulin Naval Base on Hainan Island, and Zhanjiang Naval Base, complemented by forward piers and concealment facilities near Zhangjiakou and coastal hubs. Support infrastructure comprises dry docks, submarine tenders, logistics depots from China Shipbuilding Trading Company, and repair yards under firms like China State Shipbuilding Corporation. Surveillance and force protection integrate shore-based radars, maritime patrol aircraft such as designs akin to Y-8 (aircraft), and anti-submarine warfare frigates built by yards linked to Hudong-Zhonghua. Bases also host training simulators and secure communications nodes connected to strategic command centers at Baiyuan, with redundancy modeled on practices observed at Northern Fleet bases.
Ongoing modernization programs target quieter propulsion, advanced AIP systems, next-generation SSBN designs, and integration of unmanned undersea vehicles from research institutes like Harbin Engineering University and companies such as China Shipbuilding Industry Corporation. Planned capabilities include new ballistic missiles with improved range and accuracy, improved sonar suites, and networked undersea sensor arrays linked to space assets like the BeiDou Navigation Satellite System. Strategic aims align with regional posture involving interactions with ASEAN states, countering power projection by navies such as the United States Navy and expanding blue-water operations reminiscent of developments in the Russian Navy and Royal Navy. Technology transfers, domestic R&D, and procurement strategies involve actors including CASC and multinational commercial partners, shaping a submarine force oriented toward survivable deterrence and layered maritime denial.