A new U.S. maritime advisory keeps commercial-vessel risk high across the Persian Gulf, Strait of Hormuz and Gulf of Oman. The Maritime Administration issued advisory 2026-011 on September 9, superseding advisory 2026-004 and extending the active notice through March 8, 2027.

MARAD says numerous navigation hazards remain and that threats to commercial shipping include missiles, armed unmanned aircraft and armed unmanned surface vessels in addition to the historical use of small boats and helicopters. The advisory describes a security environment and voyage-planning duty; it does not report that every vessel has been attacked or that the waterway is closed.

For U.S.-flagged commercial vessels, the guidance is specific. MARAD advises a minimum 30-nautical-mile standoff from U.S. military vessels, responses to coalition naval VHF calls and close coordination with the Naval Cooperation and Guidance for Shipping watch. It also recommends avoiding identified hazard areas and following provided routes when possible.

Navigation integrity receives its own warning. MARAD says significant satellite-positioning interference, spoofing and jamming continue in the region and tells mariners to cross-check electronic chart inputs with radar, visual bearings and secondary navigation systems. U.S.-flagged vessels are also advised to register with the United Kingdom Maritime Trade Operations center 24 hours before entering its reporting area and include estimated transit times and operating constraints.

Those instructions apply to vessel operators in the named waters. The advisory does not announce a port closure, cancel a sailing, publish a diverted-vessel list, change an inland rail cutoff or suspend a truck appointment. It also does not provide container volumes, transit delays, freight rates, insurance costs or fuel-price effects. Inland planners need shipment-level evidence before turning the security notice into a schedule change.

FreightNews infers that the first commercial effect will appear in voyage decisions: a carrier may adjust a route, speed, reporting plan, port call or connection before a U.S. drayage or warehouse handoff moves. That possibility is relevant to national import and export networks, but the advisory alone cannot identify which container, commodity, consignee or domestic lane will be affected.

Importers, exporters, brokers and inland carriers should tie the alert to the actual booking. Confirm the vessel name, voyage, flag, current route, transshipment port, latest estimated arrival and any carrier notice. Then check free time, rail availability, terminal appointments, warehouse receiving capacity and customer delivery windows against the revised facts—not against the advisory's publication date.

Build a decision ladder instead of issuing a blanket delay. A security advisory starts monitoring; a carrier notice or observed voyage change triggers schedule review; a revised port or terminal time triggers the inland capacity decision. Keep alternative drayage and receiving windows available for exposed shipments, while leaving unrelated loads on their verified plans.