Arabian Sea Warship Collision Between India and Pakistan Raises Concerns Over Maritime Escalation

A maritime collision between Indian and Pakistani naval vessels in the Arabian Sea has reignited tensions between the two nuclear-armed rivals, prompting an exchange of diplomatic protests and highlighting the danger of unintended military escalation. The incident represents the closest direct military encounter between the two South Asian neighbors since a major confrontation occurred more than sixteen months ago.

The close-quarters incident follows the four-day conflict of May 2025, during which both nations engaged in an air war involving airstrikes, missiles, and drone attacks. That confrontation had brought India and Pakistan closer to a full-scale war than at any point in decades. While the recent naval encounter did not involve weapons fire, analysts caution that the scarcity of functional de-escalation mechanisms could allow maritime friction to expand into a broader crisis.

Diplomatic repercussions followed quickly after the collision occurred on Tuesday. New Delhi initiated official action by summoning Pakistan’s chargé d'affaires to register a formal protest over the encounter. Hours later on Wednesday, Pakistan’s government mirrored this diplomatic move by summoning India’s top diplomat stationed in Islamabad to lodge its own formal objection.

Despite the high-level diplomatic protests, the exact sequence of events remains heavily disputed. Neither government has publicly released tracking data, video recordings, or independent accounts to support their claims. Instead, official statements from both Islamabad and New Delhi have placed the blame entirely on the maneuvering of the opposing vessel.

According to an official statement issued on Wednesday evening by Pakistan’s Foreign Office, the Pakistan Navy had been conducting its biennial SEASPARK-26 naval exercise since September 1. Pakistani authorities stated that these routine maneuvers were taking place inside the country's Exclusive Economic Zone (EEZ).

Pakistan asserted that an Indian guided-missile destroyer, identified as INS Kolkata, had repeatedly attempted to enter the designated exercise area starting on September 7. Islamabad claimed that on September 15, the Indian warship executed a dangerous alteration of its course, leading to physical contact with a Pakistani offshore patrol vessel identified in local reports as PNS Hunain.

Denouncing the incident, Pakistan’s Foreign Office described the maneuver as a belligerent Indian action. The ministry explicitly stated that the Indian warship violated a 1991 bilateral agreement between the two countries, which requires military vessels to maintain a minimum separation distance of at least three nautical miles—equivalent to 5.5 kilometers or 3.4 miles—in international waters.

India’s Ministry of External Affairs provided a conflicting narrative regarding the encounter. According to Indian officials, their warship was conducting routine surveillance in international waters when a Pakistani vessel approached at high speed. New Delhi stated that the Pakistani ship performed unsafe maneuvers that caused the collision, though India has neither confirmed nor denied the specific identification of INS Kolkata.

The dispute highlights the specific maritime definitions governing territorial and economic rights at sea. A nation’s Exclusive Economic Zone extends 200 nautical miles (370 kilometers) from its coastline, whereas its sovereign territorial waters cover only the initial 12 nautical miles (22 kilometers). The rest of the EEZ remains international waters where foreign vessels may navigate without encumbrance, though the economic exploitation of those waters is reserved solely for the coastal state.

Direct collisions between the Indian and Pakistani navies are relatively rare. The last recorded incident occurred in June 2011 in the Gulf of Aden, when the Pakistani frigate PNS Babur made contact with the Indian frigate INS Godavari while escorting a merchant vessel that had been released by Somali pirates. In that instance, mutual accusations between both capitals subsided within several weeks.

Strategic analysts warn that the current bilateral environment makes close-quarters encounters far more volatile. Retired Vice Admiral Ahmad Saeed of the Pakistan Navy observed that the pattern of vessels maneuvering closely without an explicit intent to collide resembles the Cold War-era "bumping" incidents between the United States and the Soviet Union in the Black Sea.

However, Saeed noted that India and Pakistan are substantially less equipped to handle such friction than the Cold War powers were. In particular, the two regional rivals possess neither a dedicated bilateral Incidents at Sea agreement—akin to the 1972 accord signed by Washington and Moscow—nor an established navy-to-navy hotline to manage real-time crises.

Saeed further explained that while Article 10 of the 1991 confidence-building agreement mandates a three-nautical-mile buffer zone in international waters, it fails to outline specific maneuvering regulations or formal procedures for post-incident investigations. This institutional gap enables both nations to trade unresolved allegations whenever an incident occurs.

The retired naval officer cautioned that unresolved friction at sea carries serious risks of escalation. Saeed warned that future encounters could prompt harsher military tactics, such as fire-control radar lock-ons or aggressive helicopter overflights, which could eventually lead to direct engagements resulting in actual casualties.

Highlighting additional legal dimensions, Lahore-based security and maritime analyst Muhammad Shareh Qazi pointed out that the 1991 bilateral pact mandates a 30-day written notice prior to the execution of military exercises. Qazi added that international collision regulations under the United Nations maritime convention remain legally applicable to both nations as signatories.

With few diplomatic and military communication channels operating between Islamabad and New Delhi, observers emphasize that the absence of robust crisis-management frameworks leaves the Arabian Sea vulnerable to unintended escalations between the two nuclear-armed neighbors.