IRGC-US Maritime Escalation in the Strait of Hormuz, September 2026

The Islamic Revolutionary Guard Corps (IRGC) Navy announced it struck a U.S. unmanned surface vessel (USV) at the entrance to the Strait of Hormuz. The craft, hull 5838, a Saildrone Explorer, was reported burning after the attack. The IRGC said the vessel was part of a recent U.S. deployment of unmanned platforms intended to avoid direct engagement with Iranian forces.

IRGC Navy Destroys U.S. Unmanned Vessel in Strait of Hormuz RT Russia TodayIRGC Navy destroys US military unmanned vessel in Strait of Hormuz

U.S. Central Command (CENTCOM) confirmed that on September 8 U.S. forces destroyed five Iranian crude-oil carriers—M/T Kaviz, M/T Charminar, M/T Horizon 1, M/T Riesco, and M/T Derya—in the Gulf of Oman and near Kharg Island. The strikes followed two IRGC attempts to launch ballistic missiles at a U.S. Navy warship, which evaded the missiles. No American personnel were harmed. CENTCOM directed crews to abandon the tankers before they were hit and released footage of the sinkings.

The Hill

The incidents occur amid a six-month maritime standoff that began after the United States destroyed several Iranian oil tankers earlier in the year, accusing the IRGC of missile attacks on U.S. warships. Iran has asserted control over the Strait of Hormuz, a chokepoint that carries roughly one-fifth of global oil shipments, and has targeted U.S. assets in the region, including an underwater drone seized in early September.

RT Russia TodayIran's IRGC says attacked US vessels, military presence in Jordan The Hill

• USV destroyed: Saildrone Explorer, hull 5838 (? 7 m).

IRGC Navy Destroys U.S. Unmanned Vessel in Strait of Hormuz

• Iranian tankers destroyed: Five vessels (Kaviz, Charminar, Horizon 1, Riesco, Derya).

The Hill

• IRGC missile launches: Two ballistic attempts on a U.S. warship (Sept 8).

The US destroyed five Iranian tankers following attacks by the IRGC

• Oil price impact: Brent crude approached $100 per barrel following the escalations.

The US destroyed five Iranian tankers following attacks by the IRGC

• U.S. Secretary of State Marco Rubio: Reiterated that Iran will continue to lose tankers for each attempt to strike U.S. naval vessels.

US forces destroyed 5 Iranian tankers after IRGC attacks on US Navy warship: CENTCOM

• “Iran has used the tankers as part of a multibillion-dollar shadow network that funds the IRGC and its regional proxies,” — United States CENTCOM

The Hill

• “Iran continues to try to hit US naval ships, and for every time they do that or try to do that, they’re going to lose tankers,” — State Secretary Marco Rubio

US Says Five Iranian Oil Carriers Destroyed After IRGC Missile Attacks

Earlier reporting on September 5 indicated that three Iranian tankers had been “put out of action” after IRGC attacks on U.S. vessels. Subsequent CENTCOM statements on September 8 and 9 describe the destruction of five tankers, suggesting an expansion of the U.S. response that is not fully reconciled in the available sources.

The US destroyed five Iranian tankers following attacks by the IRGC

Iran has signaled plans to announce a “restricted zone” around the Strait of Hormuz in the coming days, while the United States continues to enforce a naval blockade of Iranian ports and to monitor unmanned vessel activity in the waterway. Both sides have indicated that further maritime engagements remain possible.

IRGC Navy destroys US military unmanned vessel in Strait of Hormuz