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China’s 8-Submarine Deal With Pakistan: Capability Boost, Not a Game Changer for India.

China’s 8-Submarine Deal With Pakistan: Capability Boost, Not a Game Changer for India.

 

Infographic explaining China’s deal to supply eight Yuan-class submarines to Pakistan Navy and why it does not challenge India’s naval and nuclear submarine superiority
China’s $5 billion deal to supply eight Yuan-class submarines will boost Pakistan Navy’s conventional capabilities but does not alter India’s strategic advantage in undersea warfare.


China Expands Naval Support to Pakistan

China has formally committed to supplying eight advanced diesel-electric submarines to the Pakistan Navy under one of the largest defence export agreements in Beijing’s history. Valued at approximately US$5 billion, the deal underscores China’s long-term strategy of strengthening Pakistan’s conventional military capabilities while expanding its own influence in the Indian Ocean Region (IOR).

The submarines involved are variants of the Type-039B / Type-041 Yuan-class, equipped with Air Independent Propulsion (AIP) systems designed to enhance underwater endurance and stealth during conventional operations.


Key Details of the Submarine Deal

Under the agreement:

·         Four submarines will be constructed in China

·         Four submarines will be built at Karachi Shipyard under technology transfer arrangements

·         The platforms are diesel-electric, not nuclear-powered

·         Deliveries have faced delays and are now expected in the mid-to-late 2020s

Despite claims circulating on social media, China is not transferring nuclear submarines or nuclear propulsion technology to Pakistan.


Operational Role: Tactical, Not Strategic

The Yuan-class submarines will primarily serve sea-denial and coastal defence roles, focusing on:

·         Monitoring shipping lanes

·         Deterring surface combatants

·         Enhancing Pakistan Navy’s presence in the Arabian Sea

However, these submarines do not provide Pakistan with a credible second-strike nuclear capability, nor do they alter the broader strategic balance in South Asia.


India’s Undersea Advantage Remains Intact

From a strategic standpoint, India continues to enjoy clear naval superiority:

·         Arihant-class nuclear-powered ballistic missile submarines (SSBNs) provide India with a survivable sea-based nuclear deterrent

·         Kalvari-class (Scorpène) submarines offer proven conventional strike capability

·         P-8I Poseidon maritime patrol aircraft, combined with satellites and underwater sensors, ensure dominance in anti-submarine warfare (ASW)

·         India’s indigenous SSN program will further widen the capability gap in the coming decade

In contrast, Pakistan remains dependent on conventional platforms without nuclear propulsion or long-range deterrent reach.


Strategic Assessment

Defence analysts assess that the China–Pakistan submarine deal is symbolically significant but militarily limited. While it improves Pakistan Navy’s operational depth, it does not threaten India’s control of critical sea lanes or its ability to project power across the Indian Ocean.

The deal reflects China’s intent to sustain Pakistan as a regional partner rather than fundamentally shift the naval balance against India.


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Conclusion

China’s decision to supply eight submarines to Pakistan represents an incremental upgrade in Pakistan’s naval posture. However, India’s technological edge, nuclear deterrence, and maritime domain awareness ensure continued strategic superiority in the region.

For New Delhi, the development reinforces the importance of sustained investment in indigenous naval platforms, ASW capabilities, and undersea surveillance, areas where India already holds a decisive lead.

 

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