An Abu Dhabi National Oil Co. LNG tanker resumed transmitting signals from within the Persian Gulf on Wednesday, marking a notable shift in shipping patterns following the US-Iran interim agreement. The Umm Al Ashtan vessel appeared near Adnoc's Das Island export facility after maintaining radio silence for nearly two weeks, suggesting it navigated the Strait of Hormuz with its transponder disabled.

The development reflects broader changes in maritime traffic through a critical energy chokepoint. At least six empty tankers have entered the Persian Gulf since Monday, with most broadcasting their positions openly while transiting Hormuz. Qatar and the United Arab Emirates are expanding super-chilled fuel exports, creating additional shipping activity in the region.

Adnoc's vessels had previously adopted a cautious approach for approximately two months, stopping at the Strait's eastern entrance, switching off transponders, then reactivating them only after completing the passage with cargo. At least six LNG shipments employed this strategy since late April, according to satellite and ship tracking data.

This signals improving security conditions in a waterway that carries roughly one-third of global seaborne oil trade. The return of transparency to shipping movements could reduce insurance costs and support smoother energy flows between Middle Eastern producers and global markets.