Hormuz Oil Flow Discrepancies: US Claims vs. Ship-Tracking Data

## Catalyst Analysis: Divergent Claims on Strait of Hormuz Oil Traffic

On September 2, 2026, discrepancies emerged between U.S. government claims and ship-tracking data regarding the volume of oil passing through the Strait of Hormuz. U.S. officials, including former President Trump and Treasury Secretary Scott Bessent, asserted that approximately 30 ships transit the waterway daily, with Bessent estimating at least 10 million barrels of oil passing through each day, and higher figures for specific dates like Tuesday. Iran's Parliament Speaker Mohammad Bagher Ghalibaf stated that while some ships are getting through, Iranian forces maintain complete control of the strait.

## Impact on Global Oil Markets ### Winners, Losers & Uncertainty

The divergence in reported figures creates uncertainty for global oil markets, a critical artery for approximately one-fifth of the world's oil and gas shipments during peacetime. While the U.S. claims of control and high transit volumes could suggest market stability, conflicting data from sources like Lloyd's List Intelligence, which recorded about 14 non-Iranian-linked ships daily between August 17-23, introduces an element of risk. This ambiguity may impact energy prices and shipping insurance costs.

### Risk Watch — Data Interpretation and Geopolitical Risk

Analysis by Lloyd's List Intelligence suggests a significantly lower number of transits, with an average of around 12 vessels per day from August 26 to September 1, 2026. Experts note that operational counts could include various vessels beyond commercial oil tankers, such as naval auxiliaries and smaller craft. Additionally, vessel transponder data may require revision due to ships switching off tracking beacons, with confirmed movements sometimes backdated.