U.S.-Israel-Iran War Maritime Dashboard - September 2026

Executive Summary

• Marmore's monthly Maritime Dashboard monitors how the ongoing U.S.-Israel-Iran conflict is reshaping shipping routes, port activity, and oil production across the Gulf.
• August 2026 data indicate the recovery losing momentum: Hormuz transits fell to 143 ships from 316 in July, and transit trade volume dropped to 2.8 million metric tons from 11.6 million metric tons — the lowest since March and barely 3% of pre-conflict levels.
• The setback extended beyond the Gulf: Red Sea gateways Yanbu (-95%) and Jeddah (-62%) recorded the steepest m/m declines in ship arrivals alongside Shuaiba (-88%) and Jebel Ali (-39%), while Ras Laffan (-2%) and Salalah (-4%) held broadly steady. This indicates that the alternative routes that absorbed diverted cargo earlier in the conflict are no longer insulated.