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Pakistan Eyes Return To Bay Of Bengal For First Time Since 1971 With Hangor-Class Submarines

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Pakistan is poised to significantly enhance its naval capabilities with the Hangor-class submarine program, marking the nation's largest naval upgrade in decades. These advanced submarines will enable Pakistan to operate in the Bay of Bengal for the first time since 1971. The ambitious plan involves the construction and deployment of eight submarines, bolstering maritime security and strategic reach.
Pakistan Eyes Return To Bay Of Bengal For First Time Since 1971 With Hangor-Class Submarines

Pakistan’s ambitious Hangor-class submarine program, poised to see its vessels operating in the Bay of Bengal for the first time since 1971, represents a significant shift in regional naval dynamics. This upgrade, encompassing the construction and operation of eight submarines, signals a renewed focus on maritime power projection and underscores Pakistan's strategic interests in the Indian Ocean. The timing is particularly noteworthy, occurring alongside broader geopolitical maneuvering in the region, including the UAE’s plans to cut dependence on the Strait of Hormuz [UAE Plans To Cut Dependence On Strait Of Hormuz To “Zero” With Major Ports & Pipeline Expansion] and Iran’s impending implementation of transit charges through the Strait of Hormuz [Iran Plans To Charge Ships Transiting Strait Of Hormuz After 60-Day Toll-Free Period Expires]. These concurrent developments highlight a complex interplay of trade routes, security concerns, and national ambitions reshaping maritime strategy across the Middle East and South Asia. The potential impact on established naval power balances warrants careful observation, especially given the ongoing tension in the region and the history of conflict between India and Pakistan.

The Hangor-class submarines, reportedly based on Chinese Type 039A Yuan-class designs, will significantly enhance Pakistan's underwater warfare capabilities. This development is far more than a simple fleet modernization; it represents a calibrated response to perceived threats and an effort to establish a more credible deterrent. Understanding the broader context requires acknowledging the strategic importance of the Bay of Bengal, a vital maritime corridor for trade and energy transport. Pakistan’s increased presence in this area will inevitably influence naval deployments and require adjustments from other nations operating in the region. This move also comes as other countries are taking steps to secure their maritime interests, as seen in Australia’s recent interception of a large methamphetamine shipment [Australia Charges Three After Intercepting 320kg Meth Shipment Worth US$208 Million From Ghana], demonstrating the growing complexities of maritime security and illicit activities. The integrated data ecosystem required to effectively utilize these submarines - encompassing intelligence gathering, real-time tracking, and coordinated operations - will be a crucial factor in the program’s ultimate success.

The implications of this shift are multi-faceted. From a purely military perspective, the Hangor-class submarines add a layer of complexity to any potential conflict scenario, increasing the risk of undetected movements and asymmetric warfare. However, the broader impact extends beyond military calculations. The program's cost and reliance on external partnerships, specifically China, will undoubtedly influence Pakistan’s economic and diplomatic priorities. Moreover, the increased naval activity in the Bay of Bengal may lead to heightened surveillance and increased maritime cooperation among regional actors, or conversely, to increased tensions and a potential arms race. The program necessitates calibrated communication and transparency to mitigate potential misinterpretations and avoid escalating regional instability. Longitudinal data on naval deployments and exercises will be essential to comprehensively assess the program's long-term effects.

Ultimately, the return of Pakistani submarines to the Bay of Bengal marks a pivotal moment in the evolving maritime landscape of South Asia. While this move is justifiable from a national security perspective, it undeniably alters the strategic calculus for neighboring nations and necessitates a reassessment of existing naval doctrines. The success of the Hangor-class program will depend not only on technological capabilities but also on Pakistan's ability to integrate these assets into a broader, validated maritime strategy. A critical question to watch is whether this development will foster greater regional collaboration or contribute to a more fragmented and potentially volatile security environment.

Pakistan Eyes Return To Bay Of Bengal For First Time Since 1971 With Hangor-Class Submarines
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Pakistan has indicated that its newly inducted Hangor-class submarines could be deployed beyond the Arabian Sea into the Bay of Bengal, expanding its naval presence more than 50 years after its eastern maritime presence ended following the 1971 war.

The comments, made by senior Pakistan Navy officers around the arrival and commissioning of the first China-built Hangor-class submarine, come as Islamabad modernises its undersea fleet and deepens defence ties with Beijing, while also witnessing a renewed phase of engagement with Bangladesh.

First Hangor submarine enters service

The first Hangor-class submarine arrived in Karachi after being commissioned in China in April, according to Pakistan Navy officials.

The vessel is part of a programme to induct eight submarines of the class, which are intended to replace ageing Agosta-class platforms.

Built in China, the Hangor-class submarines are equipped with air-independent propulsion (AIP) technology, allowing them to remain submerged for extended periods without surfacing or snorkeling, increasing stealth and operational endurance.

A senior Pakistan Navy officer described the submarine as a “game changer” and said it could help Pakistan maintain a presence in the Bay of Bengal, where it has had little naval activity since 1971.

The submarine’s name carries historical significance. During the 1971 India-Pakistan war, the Pakistani submarine PNS Hangor sank the Indian Navy warship INS Khukri in the Arabian Sea, killing 176 sailors, including Captain Mahendra Nath Mulla.

Despite that engagement, Pakistan ultimately suffered a decisive defeat in the 1971 conflict, which led to the secession of East Pakistan and the creation of Bangladesh.

After 1971, Pakistan’s naval activity remained mostly limited to the Arabian Sea, with no meaningful presence in the eastern Indian Ocean.

Possible expansion toward Bay of Bengal

Senior Pakistan Navy remarks, including those reported during a port visit in Colombo, suggest that the new submarines may operate in wider waters, including the Bay of Bengal.

The Bay of Bengal is an important sea region bordered by India, Bangladesh, Myanmar, Thailand, Malaysia, Indonesia, and Sri Lanka. It is a busy route for shipping and energy transport.

India has a strong military presence in the region, supported by its Eastern Naval Command and island bases in the Andaman and Nicobar Islands.

No timeline or confirmed deployment plan has been announced by Pakistan.

China partnership and submarine expansion

The Hangor-class programme is Pakistan’s biggest naval upgrade in years. It plans to build and operate eight submarines in total.

The submarines are being built with China’s support under a multi-billion-dollar programme that also includes technology transfer and local production elements.

These submarines are designed mainly for conventional naval roles, including surveillance and anti-ship operations.

Growing Pakistan-Bangladesh Ties

The submarine development comes at a time of improving relations between Pakistan and Bangladesh.

Trade between the two countries has increased significantly, and direct flights between Karachi and Dhaka have resumed after decades. Both countries have also discussed expanding investment and economic cooperation.

Military ties have also grown. Bangladesh has taken part in joint naval exercises with Pakistan, and its air force has shown interest in JF-17 fighter jets made by Pakistan and China.

In November 2025, a Pakistani warship visited Chattogram in Bangladesh, the first such visit since 1971.

Regional impact

The Bay of Bengal is becoming more important in regional security due to its role in global trade routes and energy shipping lanes.

India remains the dominant naval power in the area, while Pakistan’s new submarines suggest it is trying to extend its reach beyond its traditional waters.

However, Pakistan has not confirmed any permanent presence or regular operations in the Bay of Bengal.

References: indiandefensenews, indiatoday

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#ocean data#data visualization#interactive ocean maps#climate change impact#ocean circulation#Pakistan Navy#Submarines#Hangor-class#Bay of Bengal#AIP (Air-independent propulsion)#China#Arabian Sea#Karachi#1971 war#INS Khukri#Bangladesh#Agosta-class#Colombo#Naval Upgrade#Maritime Presence