GMS Week 29 – BLOCKADE RETURNS, TOLL RISES
17 July 2026
The second act arrived with a name this time, and it was not “ceasefire.” Five consecutive days of American strikes through Wednesday hit Iranian positions from Bandar Abbas and Qeshm Island to Sirik, while Washington reinstated the naval blockade of Iranian ports lifted during June’s interim peace.
The maritime security landscape in the Persian Gulf has deteriorated sharply during Week 29 as American naval forces reinstated a blockade on Iranian ports, including Bandar Abbas, Qeshm Island, and Sirik. Following five days of targeted strikes, the regional transit corridor faces heightened volatility. Commercial vessels operating in the Strait of Hormuz must now navigate these restricted zones with extreme caution. This escalation disrupts established shipping lanes, forcing fleet managers to re-evaluate voyage planning and security protocols for all merchant vessels traversing these waters.
The current blockade necessitates strict adherence to the International Ship and Port Facility Security (ISPS) Code, specifically Part A, Section 4, regarding the implementation of maritime security levels. Compliance departments must ensure that the Ship Security Plan (SSP) is updated to reflect heightened threat assessments as per SOLAS Chapter XI-2. Failure to maintain rigorous security documentation or ignoring directives from naval patrols could lead to vessel detention or insurance invalidation. Operators must prioritize the safety of the crew and cargo by strictly following the latest maritime security charts and Admiralty notices.
Masters and navigating officers bear the primary responsibility for maintaining situational awareness during this blockade. These professionals must conduct thorough risk assessments before entering the Strait of Hormuz and ensure that the Automatic Identification System (AIS) remains operational unless instructed otherwise by authorized naval authorities. Navigating officers should increase bridge watchkeeping duties, maintain constant communication with regional maritime security centers, and strictly adhere to the company’s updated security protocols to ensure safe passage through these high-risk zones.
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