Strait Transits Plummet Below Trailing Averages Despite Conflicting Flow Estimates

Tracking Disparities Underscore Chokepoint Hesitancy

Commercial shipping activity through the Strait of Hormuz recorded a sharp drop below baseline levels as commercial operators recalibrated passage risks in the wake of targeted tanker strikes. Data compiled by intelligence firm Kpler confirmed that only four commercial tankers completed the transit on Tuesday, falling dramatically short of the waterway’s recent ten-day trailing average of 13 vessels per day.

Parallel maritime telemetry from Windward documented four tankers attempting passage into the strait—two of which operated with AIS transponders deactivated ("dark mode")—while three vessels exited the Gulf, including one running dark. The reliance on transponder blackouts underscores the severe tactical countermeasures commercial vessel masters are adopting to evade coastal detection arrays along the Iranian littoral.

Flow Claims Versus Physical Verification

The slump in physical ship transits contrasts sharply with high-level throughput assessments delivered by Washington officials. Earlier this week, U.S. Energy Secretary Chris Wright stated that an estimated 17 million barrels of crude had managed to transit the waterway during a single Monday window, suggesting that energy arteries remained resilient.

However, commodity analysts at ING cautioned that single-day throughput spikes can be misleading and do not reflect steady-state operational flows. In a note to institutional clients, ING analysts pointed out that while pipeline bypass volumes compensate for some lost waterborne transit, independent ship trackers continue to calculate far more modest physical movements. "It makes more sense to look at average flows over longer periods, rather than a single day, given flows move lots day to day," the bank’s commodity desk observed, warning that risk premiums remain fully justified.

Structural Freight Inflation

The persistent constriction of Hormuz transits is rippling across global chartering desks. Japanese shipping lines and major international tanker owners have cautioned that disruptions could persist into next year, compelling charterers to secure tonnage on alternative, prolonged supply routes.

With marine underwriters demanding punitive additional war risk premiums (AWRP) or outright refusing coverage without military escort assurances, commercial operators are increasingly weighting alternative corridors or keeping valuable tonnage outside the Gulf of Oman until security dynamics establish a verifiable baseline of stability.