US Central Command fired an AGM-114 Hellfire missile into the engine room of the Gambia-flagged bulk carrier Lian Star late May 29 in the Gulf of Oman, after the vessel ignored more than 20 warnings while transiting toward an Iranian port. Lian Star is the sixth ship disabled since the blockade began April 22, with another 116 redirected. The ship is adrift but not boarded. CENTCOM treated the strike as routine enforcement under standing rules of engagement, not as an escalation.
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The blockade's standard enforcement playbook
The action followed standard US military SOP: VHF warnings across multiple frequencies, warning shots, then a final strike to the engine room to disable propulsion while preserving crew lives and hull integrity. Hellfire was directed at the engine room, not the bridge or magazine — a calibrated restraint that disables without sinking. The full sequence from first warning to disabling took roughly 11 hours, providing a complete evacuation window. This SOP has been running for 38 days since the Fifth Fleet announced the blockade on April 22, with zero civilian casualties recorded.
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Six disabled, 116 redirected, zero ships reaching Iran
From April 22 through May 31, the cumulative numbers are: six vessels disabled, 116 redirected after warnings, zero merchant ships reaching Iranian ports. Shipping into Iran through the Strait of Hormuz fell from a pre-blockade average of 14 vessels per day to zero. Iranian crude exports collapsed from 1.65 million barrels per day in April to roughly 110,000 per day in May, by Kpler tracking — the residual via overland and small-boat smuggling. Tehran's foreign reserves are estimated to have fallen another $8.3 billion in May. The economic pressure curve is steep.
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Gambia-flag and the legal frame for third-country enforcement
Lian Star sailed under a Gambian flag of convenience, typical for Tehran's sanctions-evasion shadow fleet. The US legal basis rests on UNCLOS Article 87 freedom of navigation plus a collective-security exception, combined with the Iran Maritime Quarantine executive order Trump signed April 18. Twenty-three of the 27 EU states have either stayed silent or quietly supported the blockade. Russian and Chinese objections have stayed at the level of diplomatic statements, with no economic retaliation. The legal and diplomatic friction is materially lower than projected before the operation began.
Thirty-eight days into the blockade, Iran's oil cash flow is functionally zero. Whose side of the negotiating table time favors — this data series has already answered.
Sources
- ✓ CENTCOM — Maritime Interdiction Update — May 30 2026
- ✓ Euronews — US military says it struck commercial ship trying to breach blockade — May 31 2026
- ✓ Military.com — US Says it Struck a Commercial Ship Trying to Reach Iran — May 31 2026
- ✓ Kpler — Iran crude export tracker — May 30 2026
#Iran#Blockade#CENTCOM#LianStar#Hormuz