Strait of Hormuz, Iran
Strait of Hormuz, Iran: narrow shipping chokepoint where Iranian forces, mines and attacks disrupt maritime traffic
The Strait of Hormuz is repeatedly reported as a fraught, narrow maritime corridor off Iran where state forces, asymmetric attacks and a documented mine threat have disrupted shipping. Reporting describes Iran’s Islamic Revolutionary Guard Corps firing warning shots, halting a cargo ship, declaring closures and, in one report, a missile targeting a commercial vessel.
Sources say the strait handled about a fifth of global oil supplies before the conflict on 28 February 2023. In July 2023 multiple tanker attacks and near‑standstill tanker traffic were reported, with daily traffic averaging about 40 ships in a recent two‑week window. Shipowners have cancelled or reconsidered planned transits and London insurers report fewer inquiries.
Analyses cited in reporting estimate up to 80 sea mines could be laid in the lanes, with search and clearance taking weeks to months; seabed and environmental factors are said to complicate detection and extend timelines.
- Traffic Separation Scheme is reported as about 16 nautical miles long, with two 2 nm-wide lanes
- IRGC has fired warning shots, halted ships and announced closures, saying vessels will not pass while foreign interference continues
- Reports in July 2023 describe multiple tanker attacks, a drone strike, and US attribution of three attacks to Iran
- Mine estimates model up to 80 sea mines; if all in lanes density would be about 1.25 mines per sq nautical mile
- Clearing and confident search work is reported to take weeks to months: search alone at least 4-5 weeks if no mines are found
- Commercial effects reported: traffic near standstill on 9 July 2023, daily average ~40 ships earlier, owners and insurers reducing transits
Synthesised from 40 sourced claims across our published briefings.
The complete claim-by-claim ledger for Strait of Hormuz, Iran — every sourced report with its Admiralty grade, confidence, and the briefs that cited it — is on the Analyst plan.
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