U.S Navy Says Over 70 Ships Blocked From Entering Or Leaving Iranian Ports
9 May 2026

More than 70 ships are being prevented from entering or leaving Iranian ports as the American naval blockade continues.
The U.S. Navy has intensified its maritime security operations, effectively preventing over 70 commercial vessels from entering or departing major Iranian ports, including Bandar Abbas and Chabahar. This ongoing blockade, part of broader geopolitical enforcement, has disrupted global supply chains and left numerous tankers and bulk carriers stranded in the Persian Gulf. Shipping companies are currently scrambling to reroute vessels to avoid potential detention, as the naval presence creates significant uncertainty for international maritime trade routes and regional logistics planning.
From a regulatory perspective, these disruptions trigger complex compliance requirements under the International Maritime Organization (IMO) framework, specifically concerning SOLAS Chapter XI-2 regarding maritime security and the International Ship and Port Facility Security (ISPS) Code. Masters must ensure that their Vessel Security Plan (VSP) is strictly updated to reflect these high-risk transit areas. Furthermore, classification societies and P&I clubs are monitoring these developments closely, as prolonged delays may impact insurance coverage and breach charter party agreements, necessitating rigorous documentation of all operational deviations to maintain regulatory compliance.
For masters and navigating officers, this situation demands heightened vigilance and immediate updates to bridge procedures. Navigating officers must prioritize real-time AIS monitoring and maintain constant communication with company security officers to receive updated transit instructions. Masters should document all delays in the official logbook to mitigate future legal liabilities. It is critical for these rank groups to remain alert to changing naval directives to ensure the safety of the crew and the vessel while operating near these restricted zones.
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