India protests after Pakistan warship collides with Indian vessel
India's external affairs ministry said Pakistan Navy corvette PNS Hunain collided with an Indian warship in the north Arabian Sea on the evening of September 15. Pakistan high commission charge d'affaires Saad Warraich was summoned and a strong protest lodged. The ministry said the incident in international waters caused no major damage and violated Article 10 of a 1991 bilateral agreement. Pakistan countered that an Indian vessel manoeuvred aggressively in its exclusive economic zone.
Source
Hindustan Times — India · read the original report ↗
Desk check · some claims need care
What the desk checked (5)
- A Pakistan Navy vessel collided with an Indian warship in the north Arabian Sea on the evening of September 15 — Attributed to India's external affairs ministry statement and unnamed officials in the source; the Indian warship was not identified.
- Pakistan charge d'affaires Saad Warraich was summoned by the external affairs ministry and a strong protest lodged — Attributed to an official MEA statement quoted in the source.
- The conduct violated Article 10 of the 1991 India-Pakistan agreement requiring a three-nautical-mile separation in international waters — Attributed to the MEA statement; text of Article 10 as described in the source.
- Pakistan summoned Indian charge d'affaires Satyanjal Pandey and blamed an Indian vessel for aggressive manoeuvres in its EEZ — Attributed to a Pakistan foreign ministry statement; presents a contradictory account of the same incident.
- PNS Hunain, a 2,600-tonne corvette commissioned in July 2024, returned home with damage — Sourced only to unspecified 'reports' in the original text; weakly attributed.
Analysts’ view opinion
This is the first reported military brush between India and Pakistan since the four-day hostilities of May 2025, and both governments have responded with the safest political instrument available: a demarche rather than escalation. New Delhi's framing — an unprofessional Pakistani manoeuvre, a restrained Indian captain, no major damage, and a specific breach of Article 10 of the 1991 agreement — lets the government look firm without opening a new front. Islamabad's mirror-image protest, alleging aggressive Indian action inside its EEZ, shows both sides are playing to domestic audiences as much as to each other.
- Choosing a summons and protest, rather than any operational response, signals both capitals want the incident contained — a politically low-cost way to register anger.
- India's citing of a specific treaty article is a deliberate legal-diplomatic move: it puts Pakistan in the dock on rules both sides signed up to, which plays well internationally and at home.
- The symmetrical protests — each side summoning the other's charge d'affaires — mean neither government concedes an inch of narrative, making any agreed account of the collision unlikely.
- That charges d'affaires, not high commissioners, are being summoned underlines how thin the diplomatic channel has become since ties were downgraded in 2019 and military attaches were withdrawn after Pahalgam.
- For the Indian government, the emphasis on the captain's restraint and the mission continuing serves a domestic political purpose: strength without recklessness, ahead of the usual opposition questions on maritime preparedness.
What to watch — Watch whether the exchange stays at the level of paper protests or triggers demands in Parliament and in Pakistan's political debate for a tougher line, and whether either side proposes reviving incident-at-sea or CBM talks.
The story does not establish which vessel was at fault, does not identify the Indian warship, and the accounts of the two governments are flatly contradictory with no independent verification.
Deep dive
Research brief · 8 facts · 8 dates · exam-readyThe brief
Context
On the evening of September 15, a Pakistan Navy corvette, PNS Hunain, collided with an Indian Navy warship on a routine surveillance mission in the north Arabian Sea. India says the Pakistani vessel closed in at high speed and manoeuvred in an "unprofessional and unsafe" manner in international waters, breaching Article 10 of the 1991 India-Pakistan agreement on advance notice of military exercises, manoeuvres and troop movements. India summoned Pakistan's charge d'affaires Saad Warraich to lodge a protest; Pakistan summoned India's charge d'affaires Satyanjal Pandey and blamed an Indian vessel for aggressive manoeuvres inside its exclusive economic zone. It is the first reported military incident between the two countries since four days of hostilities in May 2025 that followed India's strikes on terror infrastructure in Pakistan after the Pahalgam attack.
Key facts
- The collision occurred on the evening of September 15 in the north Arabian Sea, involving Pakistan Navy corvette PNS Hunain and an Indian Navy warship (not identified).
- India's external affairs ministry said the incident occurred in international waters and caused no "any major damage" to the Indian warship.
- India cited a violation of Article 10 of the India-Pakistan Agreement on Advance Notice on Military Exercises, Manoeuvres and Troops Movements of April 1991.
- Article 10 requires naval ships and submarines to stay at least three nautical miles from the other country's vessels in international waters.
- Pakistan high commission charge d'affaires Saad Warraich was summoned to the external affairs ministry on Wednesday; India's charge d'affaires in Islamabad was told to lodge a similar protest.
- Pakistan's foreign ministry summoned Indian charge d'affaires Satyanjal Pandey, alleging "aggressive maneuvers in dangerously close proximity" by an Indian vessel in Pakistan's exclusive economic zone.
- PNS Hunain is a 2,600-tonne warship commissioned in July 2024, built in Romania by the Netherlands' Damen Group as part of an order for four warships; reports said it returned home after sustaining damage.
- The last recorded collision between the two navies was in 2011, when PNS Babur marginally damaged INS Godavari's helicopter-deck safety net during an anti-piracy patrol in the Gulf of Aden.
Timeline
- 1980s and 1990sPakistan Navy commonly "shadowed" or "buzzed" Indian warships in the Arabian Sea and Persian Gulf.
- April 1991India and Pakistan sign the Agreement on Advance Notice on Military Exercises, Manoeuvres and Troops Movements, a military confidence-building measure.
- 2011PNS Babur closes in on INS Godavari from astern in the Gulf of Aden, touching it and marginally damaging a helicopter-deck safety net; India protests.
- 2019Diplomatic ties downgraded after India scrapped Jammu and Kashmir's special status; no high commissioners since.
- April 2025After the Pahalgam terror attack, India withdraws its three military attaches from Islamabad and declares Pakistani counterparts persona non grata.
- May 2025Four days of hostilities follow India's attacks on terror infrastructure in Pakistan.
- Evening of September 15PNS Hunain closes in at high speed on an Indian warship in the north Arabian Sea, leading to a collision.
- Wednesday (following the incident)India summons Saad Warraich and protests; late that night Pakistan summons Satyanjal Pandey and lodges a counter-protest.
Who has a stake
- Indian Navy — Safety of frontline warships on surveillance missions; the vessel continued its mission and its captain was said to have shown extreme restraint.
- Ministry of External Affairs, India — Lodged the protest and invoked Article 10 of the 1991 agreement to press Pakistan on naval conduct at sea.
- Pakistan Navy — Conduct of PNS Hunain, a newly commissioned 2,600-tonne corvette that reportedly returned home damaged.
- Pakistan's foreign ministry — Rejects India's version, alleging Indian provocation inside Pakistan's exclusive economic zone.
- Saad Warraich, Pakistan charge d'affaires in New Delhi — Summoned and advised to convey to Pakistani authorities the need to observe due care and bilateral agreements.
- Satyanjal Pandey, Indian charge d'affaires in Islamabad — Summoned by Pakistan and asked to convey Islamabad's rejection of the alleged Indian action.
Why it matters
This is the first reported military incident between India and Pakistan since the four days of hostilities in May 2025, showing how quickly friction can resurface even without a formal escalation. With no high commissioners in either capital since 2019 and military attaches withdrawn after the Pahalgam attack, the channels available to defuse such incidents are unusually thin. Both sides invoking bilateral agreements on preventing incidents at sea underscores that decades-old confidence-building measures remain the only working guardrails.
UPSC angle
Prelims pointers
- Article 10 of the April 1991 India-Pakistan agreement mandates a minimum three-nautical-mile separation between naval ships/submarines in international waters.
- PNS Hunain: Pakistan Navy corvette, 2,600 tonnes, commissioned July 2024, built in Romania by Damen Group (Netherlands) under a four-warship order.
- 2011 precedent: PNS Babur marginally damaged INS Godavari in the Gulf of Aden during an anti-piracy patrol near hijacked merchant vessel MV Suez.
- India and Pakistan have had no high commissioners in each other's capitals since 2019, after J&K's special status was revoked.
- After the April 2025 Pahalgam attack, India withdrew three military attaches from Islamabad and declared Pakistani counterparts persona non grata.
- A charge d'affaires heads a mission in the absence of an ambassador or high commissioner.
Mains framing
The Arabian Sea collision of September 15 illustrates how naval encounters can become a flashpoint in an India-Pakistan relationship already stripped of routine diplomatic buffers. India's account is that PNS Hunain closed in at high speed on a warship on routine surveillance in international waters and manoeuvred unsafely, contravening Article 10 of the April 1991 agreement on advance notice of military exercises, manoeuvres and troop movements, which requires a three-nautical-mile separation; Pakistan's counter-claim is that an Indian vessel manoeuvred aggressively inside its exclusive economic zone. The immediate causes lie in a long practice of "shadowing" or "buzzing" warships dating to the 1980s and 1990s, and the structural cause in the erosion of dialogue: no high commissioners since 2019, military attaches withdrawn after the Pahalgam attack of April 2025, and hostilities in May 2025 leaving only charge d'affaires-level protests. The implication is that confidence-building measures survive on paper while the mechanisms to verify facts and de-escalate have thinned. The way forward, on the source's own logic, is strict observance of existing agreements aimed at preventing incidents at sea, professional restraint at the tactical level, as shown by the Indian captain, and use of the surviving diplomatic channels to prevent a repeat.
Key terms
- Corvette
- A small warship class; PNS Hunain is a 2,600-tonne Pakistan Navy corvette commissioned in July 2024.
- Charge d'affaires
- The senior diplomat heading a mission when no ambassador or high commissioner is posted, as in New Delhi and Islamabad since 2019.
- Exclusive Economic Zone (EEZ)
- Maritime zone claimed by a coastal state; Pakistan alleges the Indian vessel acted provocatively within its EEZ.
- 1991 Agreement on Advance Notice on Military Exercises, Manoeuvres and Troops Movements
- India-Pakistan confidence-building measure on preventing incidents during army, air force and navy exercises; Article 10 sets a three-nautical-mile naval separation.
- Persona non grata
- Declaration expelling a foreign diplomat; applied by India to Pakistani military attaches after the April 2025 Pahalgam attack.
- Demarche
- A formal diplomatic representation; Pakistan's charge d'affaires in New Delhi was to lodge the same demarche with the external affairs ministry.
Practice questions
- Examine the role of military confidence-building measures such as the 1991 India-Pakistan agreement on advance notice of exercises and manoeuvres in preventing incidents at sea. How effective have they been?
- The downgrading of diplomatic representation reduces the capacity to manage military incidents. Discuss with reference to India-Pakistan relations since 2019.
- Distinguish between international waters and an exclusive economic zone, and discuss how competing interpretations of naval conduct in these zones can generate bilateral disputes.
Grounded only in the source report — figures and dates are the source's, not inferred.