The International Maritime Organization warns that the Strait of Hormuz has become unsafe for transit, with 20,000 seafarers stranded on 1,600 vessels after eight weeks of conflict. Supply shortages and escalating attacks threaten one of the world's most critical shipping chokepoints.
The International Maritime Organization issued an urgent call to Member States on April 24 as the humanitarian and security crisis in the Strait of Hormuz intensifies, with approximately 20,000 seafarers remaining stranded aboard 1,600 vessels in the Persian Gulf.
IMO Secretary-General Arsenio Dominguez delivered a stark assessment during an informal briefing to Member States and industry representatives: "There is no safe transit anywhere in the Strait of Hormuz." The statement underscores the severity of conditions in one of the world's most strategically important shipping routes, through which roughly one-third of global maritime-traded oil passes annually.
The escalation reflects eight weeks of regional conflict marked by coordinated attacks on commercial vessels. The IMO has verified 29 separate attacks across the Persian Gulf and Strait of Hormuz since the beginning of the conflict, resulting in at least 10 confirmed deaths among seafarers and significant damage to numerous vessels. Several vessels have been seized and detained, further constraining traffic through the chokepoint.
## Supply Chain Vulnerability
Beyond the immediate humanitarian crisis, the situation poses acute risks to global energy markets and supply chains. Extended congestion at the Strait of Hormuz—a waterway roughly 34 miles wide at its narrowest point—threatens fuel costs and manufacturing timelines worldwide. Shipping companies now face impossible choices: rerouting around Africa, which adds 10-14 days to transit time and increases fuel consumption, or accepting heightened risk to crews and cargo.
Dominguez warned that provisions aboard grounded vessels—water, food, and fuel—are depleting rapidly. The IMO has acknowledged regional states' efforts to supply stranded vessels, but the scale of the humanitarian need continues to outpace available support mechanisms.
## Escalating Security Threats
The presence of mines throughout the Strait compounds the danger. Dominguez emphasized the need for "maximum caution" given both reported underwater ordnance and the ongoing threat of direct attacks. This combination has created a dual-threat environment that no merchant vessel can reasonably navigate without severe risk.
## Seafarer Welfare Crisis
Dominguez drew particular attention to the human cost, recounting an encounter with a seafarer who had been trapped in the Persian Gulf for six weeks. Beyond the physical dangers and supply constraints, crewmembers face wage arrears, communication breakdowns with families, and deteriorating mental health. The IMO Secretary-General called on all flag States, maritime NGOs, industry bodies, and states of crew nationality to provide "any assistance, including remote support, helplines and keeping families informed."
He emphasized that seafarers "are not at fault" and urged their immediate release, highlighting the obligation of the maritime industry and international community to ensure fair treatment in wages and welfare standards.
## International Response Required
The situation demands coordinated diplomatic and humanitarian intervention. Shipping associations including the International Chamber of Shipping and major flag registries have called for corridors to safely evacuate crews, but no mechanism currently exists to enforce such arrangements.
For vessel owners and operators, the calculus has become untenable. Insurance premiums for transits through Hormuz have spiked, and many insurers now exclude coverage for the region entirely. This effectively closes the route to uninsured traffic and forces smaller operators and developing-nation fleets to absorb unsustainable risk premiums or abandon the passage altogether.
The IMO's statement makes clear that a resolution depends not on maritime industry adaptation, but on political and military de-escalation. Until that occurs, the Strait remains effectively impassable—with severe consequences for global trade, energy costs, and the lives of thousands of seafarers.