Why did Adnoc LNG tanker Umm Al Ashtan reappear broadcasting its signal inside the Persian Gulf after two weeks of silence?

Umm Al Ashtan reappeared broadcasting its signal inside the Persian Gulf—specifically next to Adnoc’s Das Island LNG export plant—after not sending a signal for nearly two weeks, indicating it had recently traversed the Strait of Hormuz with its transponder turned off; this reappearance reflects a broader trend of more vessels resuming signal transmission in the gulf amid an improving security situation following an interim US–Iran peace deal.

What does the shift in transponder usage by Adnoc’s LNG tankers reveal about current maritime security conditions in the Strait of Hormuz?

The shift—where some Adnoc vessels like Umm Al Ashtan have begun signaling from within the Persian Gulf again, after previously halting at the eastern end of the Strait of Hormuz, switching off transponders to cross 'in the dark', and only restarting signals once safely out with cargo—signals an improvement in maritime security around Hormuz, linked to the recent interim peace deal between the US and Iran; however, the fact that vessels including Umm Al Ashtan, Abu Dhabi II, and Al Bateen still transit Hormuz without broadcasting shows that full transparency has not yet been restored.

Adnoc LNG Tanker Appears in Persian Gulf as Transparency Returns

Jun 24, 2026

An Adnoc-owned LNG tanker resumed broadcasting its location in the Persian Gulf following an interim US-Iran peace deal, signaling improved security despite previous covert transits through the Strait of Hormuz.

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