ClosedHigh impactAI Refreshed

Strait of Hormuz Blocked by ~80 Mines; Tanker Traffic Disrupted

Occurred 18 Jun 2026ยทDetected 19 Jun 2026ยท
๐Ÿ‡ฎ๐Ÿ‡ท Centre of the Strait of Hormuz, between Iran and Oman34 reportsCAT 26AAEnded 30 Jun 2026
MarinePolitical Violence & WarEnergy & InfrastructureMarine HullMarine CargoEnergyPolitical RiskWar Risk

The centre of the Strait of Hormuz remains blocked by approximately 80 mines, with several vessels exiting the Gulf on Thursday following a US-Iran memorandum of understanding but the central portion expected to stay closed 'for some time' until minesweeping and Traffic Separation Scheme restoration are completed. Vessels diverted along the Omani coast face additional grounding risk, and no confirmed mine-strike losses have been reported.

AI-generated from linked source reports. See our correction policy.

Impact verdict

High impact. A named-peril (mines) chokepoint closure in the Strait of Hormuz, through which roughly 20% of global oil transits, drives direct marine hull, marine cargo and marine war risk exposure, with secondary energy, political risk and political violence aggregation potential. Severity is currently bounded by the blockage itself and mine-clearance uncertainty rather than any confirmed catastrophic vessel loss; loss pathways split between mine strikes inside the corridor and grounding on the Omani diversion route, with industry data referencing ~152 tankers / 380m DWT and ~550 ships potentially affected.

View assessment methodology

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Geographic Zone Matches

6 active matches

  • Oman (12nm coastal buffer)
    Rule-basedConfidence 100%
  • OFAC Sanctioned Countries
    Rule-basedConfidence 100%
  • JWC Listed Areas
    Rule-basedConfidence 100%
  • EU Sanctions List
    Rule-basedConfidence 100%
  • Iran (12nm coastal buffer)
    Rule-basedConfidence 100%
  • Persian/Arabian Gulf, Gulf of Oman, Indian Ocean, Gulf of Aden and Southern Red Sea
    Rule-basedConfidence 100%

Geographic zone matches are RiskEvents spatial/analytical indicators, not coverage determinations or Lloyd's official classifications.

Affected countries

๐Ÿ‡ฆ๐Ÿ‡ช United Arab Emirates๐Ÿ‡ฎ๐Ÿ‡ท Iran๐Ÿ‡ด๐Ÿ‡ฒ Oman๐Ÿ‡ถ๐Ÿ‡ฆ Qatar๐Ÿ‡ธ๐Ÿ‡ฆ Saudi Arabia๐Ÿ‡บ๐Ÿ‡ธ United States

Lloyd's classifications

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