Two Attacks on Tankers Leaving Hormuz as Brent Rises 2% on Expiry Day
BY THE HARBORMASTER · TANKERBRIEF DESK · ENERGY AND SHIPPING ANALYSIS
October 30, 2026. Prices are Friday trading as of 07:57 UTC. Source checks completed by 08:10 UTC.
Situation update
Two attacks on tankers leaving the Strait of Hormuz were reported on Thursday, both after our afternoon check, UKMTO says. A tanker's company security officer said the ship was "struck by an unknown projectile" while completing an outbound transit, with no crew injuries reported. At 22:12 UTC, an outbound vessel was reported on fire 25 nautical miles northeast of Khasab, Oman. UKMTO later said a small boat had approached the ship and attached two explosive devices to its hull, Reuters reports. The blasts started a fire in the tanker's engine room that temporarily disabled it. The fire was put out, the crew are safe, and the tanker is continuing to its next port. Neither notice names a ship or an attacker, or says whether both involve the same ship.
Iran's Revolutionary Guards say three tankers caught fire after hitting mines on an "unauthorised" southern route, and the army says a fourth hit a mine east of the strait. None has been named. On Wednesday, before these claims, US Central Command said the main transit lanes had been cleared of mines and called earlier Iranian mine claims false.
Mediation picked up overnight. Qatari mediators returned to Tehran on Friday in coordination with Washington, Reuters reports, citing an official briefed on the talks. US envoy Tom Barrack credited Qatar and Pakistan and said: "Let's have a time out, bring temperatures down." Parliament Speaker Mohammad Bagher Ghalibaf said progress depends on Iran's seven conditions. Tehran has received Vice President JD Vance's letter but has not replied, Tasnim says. US officials told Fox News on Wednesday that forces are being moved to give President Trump options, with no sign he has decided.
Saudi Arabia was targeted again. The Saudi-led coalition intercepted two Houthi ballistic missiles fired at Riyadh on Thursday night, and falling debris lightly injured one citizen and damaged a house and a vehicle, Saudi Civil Defence said. The coalition also said it downed a drone over the Mecca region, which a Houthi official denied launching.
Our geopolitical view: talks and attacks are moving in the same week. Qatar's return to Tehran keeps the channel open after Iran set its seven conditions, but the midterms scenario still treats the days after Tuesday's vote as the risk window.
Market impact
| Contract | Friday, 07:57 UTC | Change vs Thursday settle |
|---|---|---|
| Brent December | $117.17/bbl | +2.0% |
| Brent January | $112.86/bbl | +1.9% |
| WTI December | $103.85/bbl | +1.8% |
Brent December settled at $114.88 on Thursday, down 0.4%, and WTI at $102.00, down 0.8%. Friday is December Brent's last trading day, and January trades $4.31 below it. ExxonMobil and Chevron pulled top executives from the ADIPEC conference in Abu Dhabi over security concerns, Reuters reported.
Our energy view: Friday's gain is risk premium. We have seen no report of lost cargo or of new damage at a Gulf terminal. The headline price will drop by ~$4 on Monday when January becomes the front month, with no change in barrels.
Shipping and military exposure
The two attacks hit the outbound leg, where loaded tankers leave the Gulf. Explosives fixed to a hull from a small boat are a different problem from projectiles: escorts and lookouts have to stop small craft before they reach the hull. UKMTO's two previous Hormuz attack reports, posted October 23 and 26, also described outbound tankers struck by projectiles.
Iran's Persian Gulf Strait Authority plans legal action against Sinokor ships from Sunday, November 1. A US Navy advisory issued Wednesday already tells ships with no need to transit to stay well clear.
Our maritime view: two attacks in one evening on tankers leaving the strait will test the owners who run the shuttle trade. Watch whether war-risk quotes for the outbound leg move before the weekend.
What to watch
- Ship names: UKMTO or owner statements naming the ship or ships, and any damage report.
- Tehran: an answer through the Qatari mediators, and any reply to the Vance letter.
- Sinokor: whether Iran acts against any Sinokor ship from Sunday.
- Brent roll: December's expiry today and January's first print as front month on Monday.
Sources: UKMTO incident feed, records 186 and 187, checked October 30; Reuters via Arab News, October 30 (explosive devices, fire, crew); Gulf News, October 29 and 30 (IRGC and army mine claims, Barrack, Ghalibaf, Riyadh missiles, Civil Defence); Fox News live updates, October 29 (CENTCOM, US options, Reuters on ADIPEC); Reuters and Tasnim via Iran International, October 29 and 30 (Qatari mediators, Vance letter, Mecca drone, Houthi denial); Bloomberg via gCaptain, October 27 and 28 (Sinokor, US Navy advisory); CNBC quote pages, October 30 (07:57 UTC prices). Analysis: Energy Strategist, Geopolitical Strategist and Maritime Analyst.