A Chinese-built stealth submarine joined Pakistan's naval fleet on Friday, a development that defence analysts say sharpens the strategic competition in South Asia and has prompted heightened scrutiny from neighbouring India.
The Hangor-Class Addition
Pakistan's navy formally added the vessel during a ceremony at Karachi Naval Dockyard. The submarine belongs to the Hangor-class, a design derived from China's Type 039A Yuan-class, adapted for Pakistani requirements. Military officials in Islamabad described the boat as equipped with air-independent propulsion systems that allow it to stay submerged far longer than conventional diesel-electric submarines.
The programme, designated the Pakistan Naval Modernisation Programme, has been underway for several years. China Shipbuilding and Offshore International Company supplied the vessel under a contract first reported in 2015. Two additional boats in the same class are under construction at a Chinese shipyard and are expected to be delivered by 2026.
Strategic Reach Along the Arabian Sea
The submarine's deployment extends Pakistan's undersea patrol zones southward into the Arabian Sea. Naval commanders in Islamabad have long sought a credible submarine presence to guard sea lanes and counter potential blockades. The Hangor-class boats carry heavyweight torpedoes and are reportedly capable of launching anti-ship missiles.
Karachi, Pakistan's commercial capital and largest port city, serves as the primary home base for the expanded submarine fleet. The facility sits roughly 900 kilometres by sea from India's western coast. Defence planners in New Delhi have taken note of the expanded operating radius, according to statements from India's Ministry of Defence.
India's Maritime Response
Indian naval authorities confirmed they have intensified surveillance of submarine movements in the Arabian Sea and Bay of Bengal. The Indian Navy operates a mixed fleet of diesel-electric submarines and nuclear-powered vessels, including the locally built Arihant-class ballistic missile submarines.
The submarine contest between the two rivals has accelerated over the past decade. India commissioned its fifth Scorpene-class submarine, INS Vagsheer, in April this year. Both nations are investing heavily in undersea capabilities as part of broader military modernisation drives.
China's Growing Footprint in South Asia
The submarine deal is one of several Chinese arms transfers to Pakistan. Beijing has supplied combat aircraft, main battle tanks, and multiple naval vessels to Islamabad over the past two decades. The China-Pakistan Economic Corridor, a flagship Belt and Road Initiative project, has deepened defence and infrastructure ties between the two countries.
For India, the submarine delivery reflects a broader pattern of Chinese military support to its western neighbour. Indian foreign ministry officials have raised concerns about the partnership in multilateral forums, arguing it destabilises regional security.
What Analysts Are Watching
Military analysts tracking the Indo-Pacific said the submarine's induction fits into a wider Chinese strategy of cultivating client states with advanced naval hardware. The South Asian theatre has become a secondary concern compared with tensions over Taiwan and disputed waters in the South China Sea, but analysts said the arms flow still shapes regional calculations.
Pakistan's navy currently operates a mix of older French-origin Daphne-class submarines alongside newer Chinese designs. The Hangor-class boats are intended to gradually replace the aging Daphne fleet, with full transition expected within five to seven years.
Citizen Impact and Coastal Communities
For ordinary Pakistanis, the submarine programme represents a significant investment of public funds into defence. The contracts with China are estimated to be worth several billion dollars, resources that critics say could address infrastructure gaps in a country facing chronic electricity shortages and deteriorating roads.
Coastal communities in Sindh and Balochistan have limited direct interaction with naval affairs, though Karachi residents said they noticed increased naval vessel traffic near the harbour in recent months.
What Comes Next
Pakistan's navy is expected to conduct a series of sea trials over the coming months to fully integrate the submarine into operational readiness. The two remaining Hangor-class vessels are scheduled for launch in 2025. Indian naval commanders have indicated they will expand their submarine patrol schedules in response.
Both navies are slated to participate in separate multilateral exercises in the Indian Ocean region over the next year, providing opportunities for intelligence gathering on each side's capabilities. The pace of undersea competition shows no sign of slowing.
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