Surge in Strait of Hormuz attacks cuts crude transits, raising global oil shipping risk

From early October 2026, attacks on commercial vessels in and around the Strait of Hormuz intensified, with a spike of incidents the week of Oct. 4 and a further surge around Oct. 11, 2026; independent data showed crude transits through the strait running roughly 40% below prewar norms, reducing flows and lifting maritime risk premiums.

Reduced crude throughput and higher maritime risk premiums can raise global oil prices and shipping costs, worsening terms-of-trade and external financing needs for oil-importing African sovereigns that rely on affected routes (notably via the Red Sea/Bab al-Mandeb). Exporters with crude-linked revenues may see mixed effects depending on realized price vs. lost volume. Actual sovereign curve or FX moves depend on country-specific exposure, reserves and market sentiment.

Monitor JMIC/UKMTO advisories and Kpler/CENTCOM transit data for changes in daily transit counts or a sustained reopening plan via Iran-Oman coordination.