Full Breakdown
Iran’s intensified attacks on the Strait of Hormuz cripple oil flows
By Drooid · · How we work
Surge in attacks
In the two weeks ending October 13, 2026, a record 24 commercial vessels were struck in and around the Strait of Hormuz, the highest tally since the war began on February 28, 2026. UK Maritime Trade Operations (UKMTO) data recorded six ships hit on October 11 and another six on October 13, marking the single-day peak. Between late September and early October, maritime-tracking firm Kpler counted ten tankers hit, with additional strikes logged through October 14. The assaults have involved unidentified projectiles, drones and, according to Iranian authorities, naval mines.
Background & context
Before the February 28 US-Israel strikes, the strait handled about 125 large commercial vessels daily, moving roughly 20 percent of global crude and LNG. Iran’s Islamic Revolutionary Guard Corps (IRGC) has warned that vessels turning off transponders or using “unauthorised routes” will be treated as illegal oil smugglers. The United States maintains a naval blockade of Iranian ports and escorts merchant traffic, while Iran has deployed new surveillance units east of the strait and across the Arabian Sea.
Data & statistics
- Oil flow: pre-war average 17.1 million barrels per day (bpd); a recent reading showed 2.9 million bpd, about 43 percent below pre-war levels (Kpler).
- Vessel attacks: 24 ships in two weeks; six ships hit on a single day (October 13).
- Freight impact: Mediterranean container rates dropped 43 percent since July, falling to $4,007 per 40-foot container (Xeneta). Brent crude futures hovered above $105 per barrel, reaching $106.58 on October 11.
Why it matters
The disruption threatens global energy security by constraining a chokepoint that supplies roughly one-fifth of world oil. Higher freight costs—now representing 25-30 percent of Gulf crude’s price versus 1-3 percent before the war—are passed to consumers worldwide. Analysts note that the “southern corridor” shuttle system, which relies on ship-to-ship transfers, is losing leverage as attacks increase, potentially prompting further price volatility.
Official statements & responses
- Iran’s IRGC Navy warned that vessels disabling transponders will be targeted as “illegal oil smuggling.”
- Security chief Mohsen Rezaei said the US-UAE shuttle system is an explicit target and claimed nightly strikes on several participating vessels.
- The US-led Joint Maritime Information Centre (JMIC) rated the threat to merchant shipping as “severe,” the second-highest level in its assessment.
Conflicting reports & gaps
- Attack counts differ: UKMTO reports 24 ships hit in two weeks, while other European security sources cite a slightly lower figure.
- Oil-flow figures vary: Kpler cites 2.9 million bpd on a recent day, whereas other outlets reference a “seven-day average” of 43 percent below pre-war levels without specifying exact volumes.
- Iran claims several strikes were caused by naval mines; independent analysts and video reviews have found no evidence of underwater explosions, leaving some mine-related allegations unverified.
