Shipping disruption

Port or tanker

Hormuz and Gulf of Oman — tankers assemble amid large ship-to-ship transfer operation

4 September 2026 · Reported 5 September at 02:40 GMT

Strait of Hormuz and Gulf of Oman (approximate regional marker)

24.4500, 57.1500

Loading free detailed map…

What happened

TankerTrackers said it tagged at least 17 crude-oil, LNG and LPG ship-to-ship transfers conducted in the Gulf of Oman on 4 September, involving at least 24 million barrels. The service separately reported that vessels carrying at least 7.25 million barrels, together with two additional LNG tankers, were assembling to transit outward through the Strait of Hormuz under U.S. Central Command protection. No matching public CENTCOM statement reviewed for this record independently confirmed the protection arrangement, vessel identities, convoy timing or cargo totals, so those details remain attributed to TankerTrackers. TankerTrackers subsequently estimated that August crude exports from Saudi Arabia, Iraq, Iran and Kuwait were 39% below their combined January-February level of about 18.5 million barrels per day. It said the deficit had narrowed from 67% in May, with the August shortfall put at 7.2 million barrels per day versus 12.4 million in May; these are tracking-service estimates rather than official customs totals. Separately, South Korea's presidential office said Seoul could consider military contributions to freedom-of-navigation efforts without compromising defence readiness and subject to domestic legal procedures, while stressing that no deployment decision had been made. South Korean reporting said options under preparation could include a P-8 maritime patrol aircraft, an explosive-ordnance-disposal team and a naval logistics support ship; these remain proposed capabilities, not an active South Korean escort operation. The Strait remained severely restricted and exposed to attack, harassment and blockade activity, but was not completely closed: limited commercial transits continued. This is a maritime-flow and security update, not a new physical attack. The marker represents the wider Hormuz–Gulf of Oman operating area rather than a vessel position or transfer site.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.

Evidence
Reported / attributed
Confidence
Moderate
Infrastructure
Port or tanker
Current temperature
Loading…
Latitude
24.4500°
Longitude
57.1500°

Attribution

Responsibility has not been established in the cited reporting.

Sources

  1. TankerTrackers report on 17 Gulf of Oman ship-to-ship transfers and vessels assembling for protected Hormuz transitTankerTrackers.com · Incident reporting
  2. Analysis: Iran's stranglehold on Strait of Hormuz loosens as Gulf Arab oil reaches marketAssociated Press · Independent context on limited Hormuz transits, ship-to-ship transfers and likely U.S. military support
  3. Oil exports from Middle East down by 39% in August, tracking firm saysAl Jazeera, citing TankerTrackers · Reports TankerTrackers' August export comparison and the narrowing deficit since May; tracking estimates rather than official customs totals
  4. Industry Guidance on the Safe Management of Vessel Transit through the Strait of HormuzUKMTO and maritime industry organisations · Authoritative transit-risk and naval-coordination context
  5. Presidential office says no decision reached on troop deployment to Hormuz; review ongoingYonhap News Agency · South Korean presidential-office position and no-decision caveat
  6. South Korea initiates preparations to deploy maritime patrol aircraft and logistics support ship to Strait of HormuzSBS News · Reported deployment package under consideration