Trackers Show How Ships 'Go Dark' Through #Hormuz #war Zone

Business Insider
Business InsiderMar 11, 2026

Why It Matters

Hidden ship movements and electronic interference threaten reliable oil flow through Hormuz, driving up insurance costs and amplifying geopolitical risk for global energy markets.

Key Takeaways

  • Vessels use AIS blackout to evade detection in Hormuz.
  • Traffic through Strait sharply declined, only few ships transit daily.
  • Some ships falsify ownership flags to deter Iranian attacks.
  • Iranian tankers still slip through despite sanctions, heading to Asia.
  • GPS spoofing by militaries creates misleading ship position data.

Summary

Shipping tracker data reveal that a handful of vessels are navigating the Strait of Hormuz despite heightened US and Israeli strikes on Iran, employing tactics that hide their movements.

Since the conflict began, overall traffic has plummeted, yet ships like the Greek tanker Shenlong and the Marshall Islands‑flagged Iron Maiden have deliberately switched off their AIS transponders or altered ownership flags to reduce the risk of being targeted.

The Shenlong vanished from AIS for five days before reappearing near Mumbai; the Iron Maiden flagged itself as Chinese‑owned just before entering the narrowest segment, while Iran‑linked LPG carrier Denuta 1 slipped through and went dark after exiting.

These maneuvers, combined with reported GPS spoofing by military jammers, complicate real‑time monitoring, raise insurance premiums, and underscore the strategic vulnerability of global oil routes amid escalating regional tensions.

Original Description

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