The International Maritime Organization has announced a formal evacuation plan for seafarers stranded in the Persian Gulf, after IMO Secretary-General Arsenio Dominguez declared in April that approximately 20,000 crew members and nearly 2,000 vessels were trapped in the region with no viable exit route.

The operational picture is stark. As of late April, the IMO had recorded 29 attacks on vessels in the Persian Gulf. Dominguez stated plainly that there is no safe transit anywhere in the Strait of Hormuz — a chokepoint through which roughly 20 percent of global seaborne oil trade ordinarily flows. That declaration, combined with the scale of crew entrapment, prompted the IMO's decision to shift from issuing advisories to coordinating an active extraction effort.

Dominguez brought the crisis to the UN Security Council at a High-Level Open Debate, where he presented the figures of 20,000 seafarers and nearly 2,000 vessels as a humanitarian emergency requiring collective institutional response. His framing was deliberate: fragmented national responses, he argued, are no longer sufficient.

The Strategic Weight of Hormuz

The Strait of Hormuz sits between Iran and Oman at its narrowest point — roughly 33 kilometers of navigable water. Closure or sustained interdiction of that corridor does not merely affect spot freight rates; it disrupts the energy supply chains underpinning the fiscal positions of Gulf producers and the import dependency of East Asian economies simultaneously. For the shipping industry, the strait is one of a handful of points where there is simply no comparable alternative routing. Suez and the Cape of Good Hope route around Africa affect transit time and cost but remain available. Hormuz has no such bypass for Gulf-origin cargo.

Twenty-nine recorded vessel attacks in a defined operational theater, alongside a sitting Secretary-General stating there is no safe transit, places the current situation in a different category from the 2019–2020 Gulf of Oman incidents — episodic seizures and strikes that disrupted individual voyages — or the Red Sea Houthi campaign, where re-routing around the Cape, however costly, remained a functional option for most operators.

The Evacuation Plan and What It Requires

The IMO's evacuation plan, the details of which are set out in its press briefing, represents a departure from the organization's conventional posture. The IMO is a UN specialized agency with a standard-setting and regulatory mandate; it does not operate naval assets or command flag-state enforcement. Any extraction of crew at scale requires flag states, port states, and in practice military or coast guard assets from states with operational presence in the region to execute the plan. The political complexity of that coordination — given the range of actors whose interests intersect at Hormuz — is considerable.

Dominguez's appeal to the Security Council signals that the IMO has concluded the crisis exceeds what the maritime community can resolve through normal bilateral or industry-led channels. Whether the Council translates that appeal into binding authorization or operational commitments is a separate question, and one with no guaranteed answer given the chamber's current political geometry.

For shipping operators with vessels in the Gulf, the practical calculus has been grim for weeks: crews cannot rotate, vessels cannot transit, and war-risk insurance premiums on Gulf exposure have become prohibitive for many operators. Seafarers — who under international maritime law are classified as key workers — have in many cases been aboard for months beyond their contracted tour lengths, with no mechanism for relief rotation while the strait remains contested.

The IMO's evacuation announcement does not resolve the underlying security dynamic. What it does is create a formal multilateral framework that governments can either support or decline, making the political choices of individual states visible in a way that ad hoc inaction does not. The 20,000 figure is not an abstraction; these are workers from the Philippines, India, China, Ukraine, and dozens of other flag and crew-supplying states, each with its own diplomatic leverage and its own domestic constituency watching how their nationals are protected.

How quickly — and whether — the plan moves from announcement to operation will depend on what flag states and regional security actors commit to in the coming days.