Since March 1, a significant majority of vessels navigating the Strait of Hormuz have been operating with their Automatic Identification System (AIS) turned off, a practice referred to as 'dark transiting.' Data indicates that 57% of all transits during this period involved vessels not broadcasting their position. This proportion rose to 58.5% for laden outbound vessels in March, slightly decreasing to 54% in April, even as overall transit volumes reached a peak. The continued prevalence of dark transits underscores ongoing security concerns and geopolitical tensions within the region.
For freight forwarders and operations managers, this trend introduces considerable uncertainty regarding vessel movements and potential risks. The lack of real-time AIS data complicates tracking and visibility for shipments passing through this critical chokepoint. This reduced transparency can impact schedule reliability and increase the difficulty of managing potential disruptions or security incidents. Furthermore, the heightened risk perception may lead to increased war risk premiums for cargo insurance, directly affecting shipping costs and potentially influencing routing decisions for sensitive or high-value cargo.

