Three Oil Tankers Carrying 6 Million Barrels Exit Strait Of Hormuz With Trackers Switched Off
11 May 2026

The vessels reportedly disabled their trackers to avoid possible Iranian attacks as companies continue moving crude exports out of the Gulf.
Three large oil tankers have successfully exited the Strait of Hormuz carrying approximately 6 million barrels of crude oil while operating with their Automatic Identification System (AIS) trackers switched off. This tactical move, observed by maritime intelligence analysts, aims to mitigate the heightened risk of Iranian-led seizures or attacks in the Persian Gulf. As geopolitical tensions rise, shipping companies are increasingly prioritizing vessel security over standard transparency, opting for 'dark' transit maneuvers to safeguard valuable energy exports departing from major Gulf terminals.
Disabling AIS transponders presents significant challenges regarding compliance with the International Convention for the Safety of Life at Sea (SOLAS), specifically Chapter V, Regulation 19, which mandates the continuous operation of AIS for safety and security. While operators may cite security risks as a justification, such actions often trigger alerts from flag states and classification societies monitoring vessel movements. Compliance departments must carefully document these deviations to avoid potential sanctions or insurance complications, as maritime authorities strictly regulate the operational integrity of navigation equipment under international maritime law.
For masters and navigating officers, this operational shift requires heightened vigilance and manual bridge watchkeeping protocols when AIS data is unavailable. Navigating officers must rely heavily on radar and visual lookout procedures to prevent collisions in high-traffic zones. Masters are responsible for ensuring that all crew members remain briefed on security protocols during these periods of radio silence, as the absence of electronic tracking increases the burden of situational awareness for the entire bridge team during transit.
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