Skip to content
You can now search across every topic, entity and event.What's new
European Energy Markets
18JUN

F/A-18 disables tankers via smokestack on 8 May

4 min read
09:57UTC

A US Navy F/A-18 from USS George H.W. Bush put 500-pound laser-guided warheads down the chimneys of M/T Sea Star III and M/T Sevda on 8 May. CENTCOM's blockade redirection count climbed to 57.

EconomicDeveloping
Key takeaway

An aerial doctrine that disables tankers without sinking them, the same weekend Trump called it 'a love tap'.

An F/A-18 Super Hornet launched from the USS George H.W. Bush (CVN 77) disabled two Iranian-flagged tankers, M/T Sea Star III and M/T Sevda, on 8 May by firing precision munitions through their smokestacks 1. US Central Command (CENTCOM), the Pentagon command responsible for the Strait of Hormuz blockade, confirmed both vessels were attempting to reach Iranian ports in violation of standing redirection orders. The ordnance, likely 500-pound laser-guided warheads, was dropped down the chimney rather than into hull or magazine, disabling the propulsion and electrics without rupturing the cargo or killing the crew.

This was the third blockade enforcement action in a fortnight and the first to use aerial precision-disabling rather than naval gun fire. CENTCOM's commercial-vessel redirection count has now climbed from 48 on 3 May to 52 on 7 May to 57 on 8 May, five fresh redirections in two days. Four Iranian-flagged vessels have been physically disabled across the campaign so far 2. The technique maps onto a long-standing US Navy preference for proportional kinetic response: the 1988 Praying Mantis engagements aimed to neutralise Iranian platforms without sinking civilian shipping in the same waters. The 2026 variant uses laser-guided ordnance for what 1988 did with five-inch gun fire.

The Khatam al-Anbiya Central Headquarters, the IRGC overarching joint operational command, claimed "significant damage" to US destroyers from the 7-8 May missile, drone and small-boat salvos near Bandar Abbas . CENTCOM confirmed zero hull damage and zero US casualties 3. Tasnim, the IRGC-linked agency, cited an unnamed senior source claiming three US destroyers fled to the Gulf of Oman. Both accounts cannot be true; both are real official statements in an information war running behind the kinetic one.

Donald Trump described the same exchange to ABC News as "just a love tap" on the same weekend his pilots were dropping laser-guided ordnance down two tanker chimneys. The verbal de-escalation track and the kinetic enforcement track are no longer running on the same calendar. The new precision-disabling doctrine creates an evidentiary record (vessel still afloat, intact cargo, surviving crew) that enables prosecution under the Hormuz blockade legal architecture, where sinking would have foreclosed it. CENTCOM has not yet published the rules of engagement under which an aircraft may put precision munitions into a non-combatant tanker.

Deep Analysis

In plain English

A US Navy jet from the aircraft carrier USS George H.W. Bush flew over two Iranian oil tankers on 8 May and dropped precision bombs through their smokestacks, the metal exhaust chimneys on top of the ships. This disabled both ships' engines and electricity without blowing holes in the hull or igniting the cargo. This was not a random attack. The US has been enforcing a naval blockade, turning back ships trying to deliver oil to Iran. These two tankers were attempting to bypass the blockade to reach Iranian ports. The method of disabling through the smokestack, rather than firing at the hull, was chosen specifically to incapacitate the vessel without sinking it or killing the crew, so the ships can be towed away and the action defended as proportionate under international law. Despite this, President Trump described the same strikes to ABC News as 'just a love tap', while the actual bombs used weighed 500 pounds. The gap between his public description and what his military actually did illustrates how differently the verbal and military tracks of this war are being run.

Deep Analysis
Root Causes

The US Navy's preference for disabling rather than sinking reflects a structural constraint specific to the Strait of Hormuz geography.

The strait is 33 km wide at its narrowest navigable point; a sunk VLCC (Very Large Crude Carrier) at the choke would produce a navigational obstruction with a draught exceeding 20 metres, potentially closing the channel entirely for weeks. **CENTCOM** planners are operating with an implicit constraint that the blockade must remain selectively permeable: enough enforcement to coerce, not enough structural damage to make the strait itself unnavigable. Disabling-not-sinking preserves the option space.

The F/A-18 strike on M/T Sea Star III and M/T Sevda on 8 May is the third enforcement action and the first aerial one, driven by the absence of a surface-boarding alternative that could safely approach vessels in an active IRGC-fire environment. The switch to aerial precision was not a doctrinal preference but a tactical necessity produced by the IRGC's small-boat swarm tactics near Bandar Abbas.

What could happen next?
  • Precedent

    The smokestack precision-disabling technique, applied without published RoE, sets a doctrinal precedent other naval powers may cite to justify similar disabling strikes on third-party shipping in contested chokepoints.

    Medium term · 0.8
  • Risk

    Without published RoE, an aircraft crew error or escalation in a future engagement has no established legal boundary; the first fatality on a disabled tanker would collapse the proportionality defence CENTCOM is currently relying on.

    Short term · 0.82
  • Consequence

    The 57-vessel CENTCOM redirection count creates an evidentiary record that will be presented to the International Tribunal for the Law of the Sea once Iran or a flag state files; each disabled vessel is a discrete legal case.

    Long term · 0.7
First Reported In

Update #92 · An MOU asking Iran to surrender what nobody can count

Arms Control Association· 9 May 2026
Read original
Different Perspectives
Cross-border power traders
Cross-border power traders
The France-Germany day-ahead spread flipped from a EUR 17.20 German premium on 1 August to a EUR 4.15 French premium on 3 August, the same day French curtailment peaked. They cannot yet attribute the flip to curtailment alone, since a like-for-like overnight comparison shows French nuclear output rising while wind fell and demand returned on the weekday step.
EDF
EDF
River-cooling limits took 7.6 GW, 12 per cent of its fleet, offline on 3 August, the highest curtailment since the heatwave began, with an easing forecast to 4.3 GW on 4 August and 3 GW after. It manages the cut as a recurring seasonal constraint, expecting it to lift with river temperature, not repair.
Gasunie
Gasunie
TTF, the Dutch hub it operates, drifted to roughly EUR 55 to 58 per MWh across the window, staying inside its recent range through both the German spark reversal and the French curtailment. It reads a flat hub price as evidence that neither event this window carried enough weight to move the fuel leg on its own.
German gas-fired generators
German gas-fired generators
Record German solar of 18,761 MW on 2 August pushed the clean spark spread to minus 18.48 EUR/MWh, a loss-making day, before it returned to plus 16.20 on 3 August. They now price dispatch against post-solar residual load rather than wind alone, since the sign flipped inside 48 hours on unchanged fuel and carbon costs.
European Commission (DG Energy)
European Commission (DG Energy)
Its implementing-measures register logged transposition notices from only Portugal and Slovakia against Wednesday's Article 94 deadline for Directive (EU) 2024/1788, with 25 states silent. It expects the register to fill only gradually, since filing routinely lags legislating and any infringement track against non-notifying states runs on a slower clock than the deadline itself.
Spain's LNG terminal operators
Spain's LNG terminal operators
Spain's 9,145 GWh terminal inventory is the largest single stock in the EU LNG network, an option value that can reroute cargoes wherever the winter strip pays best rather than a cavern gas obligation tied to a fixed date. That flexibility matters more as Germany's cavern shortfall pushes more of the winter security question onto import infrastructure.