Arsenio Dominguez
IMO Secretary-General since 2024; invoked UNCLOS to reject Iran's Hormuz toll order.
Last refreshed: 20 April 2026 · Appears in 1 active topic
Can the IMO's 1968 rulebook override Iran's four-condition Hormuz order?
Timeline for Arsenio Dominguez
Mentioned in: Hormuz transits crash to three as blackout extends
Iran Conflict 2026Published formal statement invoking UNCLOS and disclosing 20,000 trapped seafarers
Iran Conflict 2026: IMO invokes UNCLOS on Hormuz transit tollsMentioned in: Fordow inoperable since June 2025 bunker-busters
Iran Conflict 202620,000 seafarers trapped west of Hormuz
Iran Conflict 2026Mentioned in: 35,000 seafarers and passengers stranded
Iran Conflict 2026- What is the 1968 Traffic Separation Scheme for the Strait of Hormuz?
- A tripartite framework agreed between Iran, Oman, and the IMO in 1968 that has governed vessel movement through the strait for 58 years. IMO Secretary-General Arsenio Dominguez invoked it on 17 April 2026 to reject Iran's four-condition transit order.Source: IMO, via Lowdown coverage
- Who is the head of the International Maritime Organization?
- Arsenio Dominguez of Panama, elected July 2023 and in post since 1 January 2024. He previously served as Panama's Director-General of Merchant Marine.Source: IMO
- How many ships are trapped in the Persian Gulf because of the Iran war?
- The IMO cited 20,000 seafarers and 2,000 vessels trapped in the Persian Gulf as of 17 April 2026.Source: IMO Secretary-General statement, 17 April 2026
- Does international law allow Iran to charge ships to pass through Hormuz?
- No. UNCLOS Article 38 guarantees transit passage rights through international straits. IMO Secretary-General Dominguez formally rejected tolls, fees, or discriminatory measures on 17 April 2026.Source: UNCLOS; IMO
Background
Arsenio Dominguez stepped directly into the Iran war's sharpest maritime flashpoint on 17 April 2026, publishing a formal IMO statement that invoked UNCLOS and explicitly rejected tolls, fees, or discriminatory transit conditions on the Strait of Hormuz. The statement disclosed 20,000 seafarers and 2,000 vessels trapped in the Persian Gulf and surfaced the 1968 Traffic Separation Scheme, a tripartite framework agreed between Iran, Oman, and the IMO, as the governing legal instrument.
Dominguez, a Panamanian diplomat, was elected IMO Secretary-General in July 2023 and took office on 1 January 2024, succeeding Kitack Lim of South Korea. Before his election he served as Panama's Director-General of Merchant Marine and as IMO Council chair. His first year in post coincided with Houthi attacks on Red Sea shipping and the subsequent Iran blockade, making Hormuz passage the defining challenge of his tenure.
His 17 April statement was the first time the IMO had formally invoked the 1968 Traffic Separation Scheme in the context of the Iran war, giving multilateral legal cover to the 51-nation Strait of Hormuz Maritime Freedom of Navigation Initiative forming in parallel at Northwood. The intervention drew no immediate response from Tehran.
