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11,000 trapped as exit corridor shut

2 min read

15:06UTC

The IRGC's Persian Gulf Strait Authority suspended the IMO evacuation corridor within hours of the Ever Lovely strike, trapping roughly 11,000 seafarers; a second ship, the tanker Kiku, was hit two days later.

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Key takeaway

Two ships hit in 48 hours, and the only sanctioned way out of the Gulf is shut.

The Persian Gulf Strait Authority (PGSA), the IRGC's maritime arm, suspended the IMO evacuation corridor within hours of the Ever Lovely strike. The move froze the only sanctioned exit for roughly 11,000 seafarers stranded across the Gulf since spring . ¹

The International Maritime Organization (IMO), the UN body that regulates global shipping, had opened that corridor on 23 June for a coordinated evacuation of crews who have sat at anchor for months. The IRGC's rejection of the corridor framework on 25 June was the political predicate for the suspension. With the lane frozen, those mariners have no legal route home until it reopens.

A second vessel, the oil tanker Kiku, was struck by a projectile on 27 June, damaging its bridge. ² Two ships hit in 48 hours sets a tempo that will deter any master from risking the lane unescorted, whatever the corridor's official status.

Deep Analysis

In plain English

Around 11,000 sailors and maritime workers from many countries have been stuck in the Persian Gulf since the conflict began, unable to leave safely. The United Nations' shipping agency had set up a special safe corridor through the Strait of Hormuz to let them get out. Iran agreed to cooperate with this corridor, but Iran's Revolutionary Guards then declared it unacceptable and the Guards' maritime enforcement arm, called the PGSA, shut it down within hours of attacking the container ship Ever Lovely on 25 June. A second ship, an oil tanker called the Kiku, was then struck by a projectile on 27 June, damaging its bridge. With two ships attacked in two days, no ship captain is willing to sail through the area without military protection, which means the trapped seafarers have no practical way home even if the corridor reopened.

Deep Analysis

Root Causes

Iran never ratified the 1982 UN Convention on the Law of the Sea (UNCLOS), which grants automatic transit passage rights through international straits. Tehran's domestic maritime law, updated in 2024, claims jurisdiction over 'hostile-linked vessels', a category broad enough to cover any flag state that has sanctioned Iran.

The corridor the IMO established operates under international norms that Iran's legal framework does not recognise, making PGSA suspension legally coherent under Iranian domestic law even as it breaches international maritime consensus.

The 11,000 stranded seafarers represent an unresolved structural consequence of the broader crisis: their evacuation was coordinated on 23 June under a framework Iran co-signed, but the IRGC's rejection of that corridor created a contradiction between the civilian government's cooperation and the IRGC's enforcement posture. The PGSA's suspension resolved that contradiction on the IRGC's terms.

Escalation

The PGSA's suspension of a humanitarian corridor, combined with the Kiku strike 48 hours later, closes the distinction between military targets and civilian seafarers. This is a qualitative escalation: previous attacks targeted vessels in transit; now the mechanism for getting stuck seafarers home has itself been taken off the table.

What could happen next?

Risk
With the evacuation corridor suspended and two ships struck in 48 hours, London P&I clubs face renewed pressure to withdraw war-risk cover entirely rather than selectively, which would mean no underwriter in the Western market will insure any Hormuz crossing regardless of nationality.
Immediate · Assessed
Consequence
The 11,000 stranded seafarers become a diplomatic pressure point: any country seeking their nationals' release must negotiate directly with Tehran, fragmenting the Western sanctions coalition as individual governments open bilateral channels.
Short term · Assessed
Precedent
The PGSA's suspension of a UN-coordinated humanitarian corridor establishes that IRGC-affiliated maritime enforcement can override internationally agreed evacuation frameworks without triggering a military response, lowering the cost of future corridor disruptions.
Long term · Reported

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: Iraq's seizure of thousands of foreign nationals in Kuwait after the 1990 invasion prompted UN Security Council Resolution 664, which demanded their release and classified their forced detention as a violation of international humanitarian law.

The 2026 PGSA suspension replicates the structural mechanism without the physical detention: 11,000 seafarers are trapped not by capture but by the removal of the only legal exit, producing the same leverage with fewer legal liabilities for Iran.

Counter-parallel: Israel's blockade of Gaza from 2007 established a precedent for a militarily imposed maritime closure being classified as legal under UN Palmer Report findings, provided humanitarian supplies were allowed through. Iran may use an analogous argument: the corridor suspension is a security measure, and Iran's willingness to coordinate evacuation of specific nationalities satisfies the humanitarian exception.

Consensus view: Chatham House's Sanam Vakil and the International Crisis Group's Ali Vaez assess the PGSA's corridor suspension as a deliberate conversion of a humanitarian caseload into a diplomatic instrument: by removing the exit route for 11,000 seafarers, Iran gains a pressure point that costs nothing militarily but forces IMO member states to engage Tehran directly rather than through Washington.

The suspension also gives Iran's negotiators a concrete concession to trade: restoring the corridor in exchange for sanctions relief or a nuclear timeline concession.

Counter-view: The Oman Centre for Strategic Studies argues Tehran views the PGSA suspension as legally consistent with the Iran-Oman Muscat joint committee framework , which positions the two coastal states as co-governing authorities over the strait. From this perspective, the corridor Iran suspended was never legitimately established because it bypassed the bilateral framework Oman and Iran signed the week before.

Key tension: Whether a UN Security Council resolution on the seafarer situation would give Iran a legal arena it can exploit (by contesting Western vetoes) or create a binding obligation that constrains the PGSA's enforcement options.

First Reported In

Update #140 · US bombs Iran, and the oil market shrugs

STL News· 28 Jun 2026

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Causes and effects

Caused by

Drone hits ship in the safe corridor

The IRGC drone strike on M/V Ever Lovely triggered the PGSA's suspension of the IMO evacuation corridor and set the operational pattern for the Kiku strike on 27 June.

Occurred 25 Jun 2026

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IMO starts to evacuate 11,000 mariners

The PGSA's corridor suspension reversed and negated the IMO coordinated evacuation of 11,000 seafarers that began on 23 June.

Occurred 23 Jun 2026

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US strikes Iran's minelayers in Hormuz

CENTCOM's 27 June second strike was triggered by the IRGC drone attack on the tanker Kiku on 27 June.

Occurred 26 Jun 2026

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This Event

11,000 trapped as exit corridor shut

Suspending the corridor froze the only legal route home for 11,000 stranded mariners and signalled that no unescorted ship is safe.

Led to

IRGC missiles hit a Qatari gas tanker

The strike escalates the Hormuz corridor dispute that began when the PGSA suspended the IMO evacuation corridor after the Ever Lovely attack.

Occurred 6 Jul 2026

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Hormuz held severe as Guard herds ships

The IRGC's earlier corridor suspension and re-policing set up the sustained SEVERE rating.

Occurred 7 Jul 2026

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