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International Relations June 20, 2026 6 min read Daily brief · #2 of 24

Three India-flagged ships cross Strait of Hormuz, safe passage secured, says Sonowal

Three India-flagged vessels transited the Strait of Hormuz on June 20, 2026, securing the safe passage of 94 Indian crew members and approximately 8.6 lakh m...


What Happened

  • Three India-flagged vessels transited the Strait of Hormuz on June 20, 2026, securing the safe passage of 94 Indian crew members and approximately 8.6 lakh metric tonnes of crude oil cargo en route to India.
  • The transit came on a day when Iran simultaneously declared renewed closure of the Strait to commercial traffic, citing Israeli strikes in Lebanon as ceasefire violations — underscoring the precarious and negotiated character of passage for each vessel.
  • Diplomatic channels, including sustained engagement by India with both Iran and Oman, facilitated the clearance of these specific vessels.
  • The Ministry of Ports, Shipping and Waterways has been the nodal ministry for coordinating vessel movements and communicating with ship owners, operators, and crew families during the Strait crisis.
  • The Ministry of External Affairs activated consular support networks across Gulf states, including at Indian missions in Tehran, Muscat, and Abu Dhabi, for the duration of the crisis.
  • Earlier in the crisis, the Indian Navy deployed assets in the northern Indian Ocean and Gulf of Oman to provide maritime security escorts and situational awareness for Indian-flagged and Indian-crewed vessels.

Static Topic Bridges

India's Maritime Diplomacy: SAGAR Doctrine and the Indian Ocean Region

India's strategic approach to the Indian Ocean Region is encapsulated in the SAGAR doctrine — Security and Growth for All in the Region — articulated in 2015. The doctrine frames India as a net security provider in the Indian Ocean, committed to ensuring freedom of navigation, suppressing piracy, and assisting maritime neighbours in humanitarian or security emergencies. During the 2026 Hormuz crisis, India's active deployment of naval assets, diplomatic mediation with Iran and Oman, and evacuation-readiness posture all operationalise the SAGAR framework.

  • The Indian Navy's Western Naval Command, headquartered at Mumbai, has operational responsibility for the northern Arabian Sea and Gulf of Oman region.
  • India has a bilateral maritime security agreement with Oman, which controls the southern shore of the Strait of Hormuz and has engaged Iran diplomatically to facilitate passage of non-hostile vessels.
  • India is a member of the Combined Maritime Forces (CMF), a US-led multinational naval coalition that coordinates counter-piracy and maritime security in the Gulf of Aden and Arabian Sea, though CMF's mandate does not extend to Strait transit enforcement.

Connection to this news: The safe transit of Indian vessels reflects the practical application of maritime diplomacy: India's bilateral relationships with Oman and its sustained engagement with Iran ensured that Indian-flagged ships were not treated as hostile traffic under Iran's new vetting regime.

Freedom of Navigation and the Right of Innocent Passage

The transit of Indian-flagged commercial vessels through the Strait of Hormuz is grounded in the international law concepts of freedom of navigation and transit passage. Under the United Nations Convention on the Law of the Sea (UNCLOS), Part III (Articles 37–44) establishes that all ships and aircraft enjoy the right of transit passage through straits used for international navigation, including the Strait of Hormuz. This right is continuous, unobstructed, and not subject to suspension by the coastal state. Iran, which signed UNCLOS in 1982 but has not ratified it, disputes the transit passage provision, asserting that passage through its territorial waters requires its consent.

  • UNCLOS was adopted in 1982 and entered into force in 1994; as of 2026 it has 171 state parties.
  • The right of transit passage (Part III, UNCLOS) differs from the right of innocent passage (Part II): transit passage cannot be suspended and applies to both surface ships and submarines; innocent passage can theoretically be suspended by the coastal state.
  • India has ratified UNCLOS and consistently invokes it in support of freedom of navigation across the Indo-Pacific.
  • The UN Security Council, in emergency session, called for the immediate restoration of freedom of navigation through the Strait, reflecting broad international consensus.

Connection to this news: The requirement that Indian tankers seek advance Iranian approval before transiting stands in tension with the transit passage doctrine India and most trading nations uphold; the successful transit was therefore secured through diplomacy rather than through legal enforcement.

India-Iran Bilateral Relations and Chabahar Port

India and Iran have maintained a complex bilateral relationship balancing strategic interests — including the Chabahar Port development — against US sanctions pressure. The Chabahar Port in Iran's Sistan-Baluchestan province is a key element of India's connectivity strategy to Afghanistan and Central Asia, bypassing Pakistan. India has invested in the development of Shahid Beheshti Terminal at Chabahar, operated by India Ports Global Limited (IPGL). During the 2026 conflict, the status of Chabahar operations and India's engagement with Iran remained a sensitive diplomatic variable, with India seeking to insulate economic cooperation from the geopolitical conflict.

  • India, Iran, and Afghanistan signed the Chabahar Agreement in 2016 establishing the legal basis for Indian operation of the terminal.
  • Chabahar is exempt from some US sanctions under waivers specifically granted to India, though the legal landscape remained uncertain during the 2026 conflict.
  • India's engagement with Iran on Chabahar gave diplomatic interlocution channels that were utilised during the Strait crisis to discuss safe passage for Indian vessels.
  • India also participates in the International North-South Transport Corridor (INSTC), which uses Iranian rail and road infrastructure for trade routing to Russia and Central Asia.

Connection to this news: India's pre-existing institutional engagement with Iran through Chabahar provided diplomatic goodwill and active channels through which vessel clearances could be negotiated, contributing to the successful transit of the Indian-flagged tankers.

Indian Seafarers and Consular Obligations

India is one of the world's top maritime labour-supplying nations, with approximately 200,000–240,000 Indian seafarers working on vessels internationally. Indian maritime law, administered through the Directorate General of Shipping (DGS) under the Merchant Shipping Act, 1958, governs the registration and welfare of Indian-flagged vessels and Indian crew. The Ministry of External Affairs has consular obligations under the Vienna Convention on Consular Relations (1963) to protect Indian nationals in distress abroad, including crew members on merchant vessels in conflict zones.

  • The 94 Indian crew members aboard the three vessels represent a microcosm of a broader challenge: thousands of Indian seafarers were aboard vessels trapped or transiting the Strait throughout the months-long crisis.
  • DGS issued advisories to Indian shipping companies and seafarers regarding transit risk throughout the conflict.
  • India's bilateral labour mobility agreements with Gulf states do not cover maritime crew specifically, but bilateral diplomatic ties with Kuwait, the UAE, Oman, Saudi Arabia, and Qatar were all activated for crew welfare during the crisis.

Connection to this news: The Union Minister's public announcement of the safe transit and crew count reflects the government's dual mandate during the crisis: securing commodity supply (crude oil) and discharging consular responsibility toward Indian nationals at sea.

Key Facts & Data

  • Three India-flagged tankers transited the Strait of Hormuz on June 20, 2026, carrying 8,60,865 MT of crude oil and 94 Indian crew.
  • Iran declared the Strait closed on the same day, making the transit dependent on specific diplomatic clearance.
  • UNCLOS Part III (Articles 37–44) establishes the right of transit passage through international straits; 171 states are party to UNCLOS.
  • India ratified UNCLOS; Iran signed (1982) but has not ratified it.
  • India's SAGAR doctrine (2015) positions India as a net security provider in the Indian Ocean Region.
  • Chabahar Port (Shahid Beheshti Terminal) is operated by India Ports Global Limited under the 2016 India-Iran-Afghanistan tripartite agreement.
  • India has ~200,000–240,000 seafarers serving on vessels globally, making seafarer safety a standing consular priority.
  • Merchant Shipping Act, 1958, governs Indian-flagged vessel registration and crew welfare under the Directorate General of Shipping.
On this page
  1. What Happened
  2. Static Topic Bridges
  3. India's Maritime Diplomacy: SAGAR Doctrine and the Indian Ocean Region
  4. Freedom of Navigation and the Right of Innocent Passage
  5. India-Iran Bilateral Relations and Chabahar Port
  6. Indian Seafarers and Consular Obligations
  7. Key Facts & Data
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