US Blockade Disables First Tanker as Hormuz Risk Appetite Collapses

Blockade Enforcement Begins with Precision Strike on MT Belma

US Central Command forces fired Hellfire missiles into the smokestacks of MT Belma (IMO 9289491) on 16 July after the tanker ignored warnings while heading toward Iran. The action came one day after the US re-imposed a blockade covering all Iranian ports and coastline. Transits through the Strait of Hormuz immediately fell to multi-week lows as operators reassessed exposure.

INTERTANKO Extends Threat Zone Beyond the Strait

Fresh guidance from INTERTANKO states the security threat now spans the wider Gulf region, not only the narrow chokepoint. Daily strikes by Iranian speedboats, missiles, drones and mines continue despite US naval presence, confirming that even the world’s most powerful navy cannot fully suppress asymmetric attacks on commercial traffic.

Indian Seafarers Receive First Formal Avoidance Advice

India’s Directorate General of Maritime Administration issued precautionary guidelines on 15 July directing Indian crews to avoid Hormuz voyages. The notice follows multiple confirmed attacks on merchant vessels and precedes further exchanges of strikes between Iran and US forces reported on 17 July.

WHAT WE KNOW, WHAT WE DO NOT KNOW AND EAGLE ASSESSMENT

Known facts include the disabling of Belma, the formal US blockade announcement, INTERTANKO’s expanded warning, India’s crewing guidance and a measurable drop in Hormuz transits. Unverified details include the precise number of additional vessels diverted, current insurance premium levels and whether the blockade applies to all flags or only those calling Iranian terminals. Eagle Assessment: risk appetite among tanker owners has fallen faster than during the 2019–2020 incidents; the combination of state-on-state strikes and crew-nation advisories creates a self-reinforcing withdrawal that will persist even if kinetic activity pauses.

Second- and Third-Order Effects on Routing and Cover

VLCC and product tanker operators face immediate choices between extended Cape or Suez routings, sharply higher war-risk premiums and potential refusal by crews. Charterers of Russian diesel cargoes already shifting to longer-haul clean tanker trades will encounter further delays if Gulf loadings are curtailed. Ports outside the immediate threat zone may see congestion spikes within seven days.

Counter-Case: Limited and Temporary Disruption

A credible alternative scenario holds that the current intensity is short-lived. Historical precedent shows Hormuz traffic recovering within weeks once visible strikes subside and new insurance wordings are agreed. If Iranian speedboat and missile activity drops below the threshold that triggers Hellfire responses, many operators could resume partial transits under tightened routing and night-time restrictions, limiting the market impact to a brief freight spike rather than a structural rerouting.

Questions Decision-Makers Should Be Asking

Which flags and P&I clubs have already issued formal Hormuz restrictions, and what is the exact wording of their war-risk cancellation clauses?
How many additional days of voyage will major charterers accept before declaring force majeure on existing contracts?
What crewing substitution plans exist for vessels already inside the Gulf that carry mixed-nationality crews?
At what daily transit volume will the US Navy publicly adjust its blockade enforcement posture?
Which alternative loading terminals in the Red Sea or eastern Mediterranean can absorb displaced clean-product volumes within thirty days?

Triggers to Watch

Next 24 hours: any confirmed attack on a second merchant vessel or an Iranian statement claiming closure of the Strait. Next seven days: publication of updated war-risk premium tables by major London syndicates and the first public refusal by a major flag state to allow Hormuz transits. Next thirty days: sustained Baltic Dirty Tanker Index movement above 1,200 points or visible congestion data from Fujairah and Singapore anchorages exceeding 2019 peaks.