US statements describe dozens of oil tankers crossing the Strait of Hormuz daily under military protection, yet independent maritime data show far fewer vessels. The gap reflects differing counting methods and incentives on both sides of the conflict.
What US officials report about Hormuz traffic
US statements in early September 2026 indicated a sharp rise in commercial transits. Two officials told CNN that 40 vessels carrying roughly 18 million barrels passed on one Tuesday under escort. President Trump stated the Navy assisted about 30 ships nightly, while Treasury Secretary Scott Bessent cited daily volumes between 10 million and 17 million barrels.
What independent tracking services record
Commercial data providers report significantly lower activity. Kpler logged six crossings on Wednesday, 11 on Tuesday and five on Monday, with a 10-day average of 13 vessels. Lloyd’s List Intelligence placed the average near 12 transits per day in late August, noting possible undercounts from vessels switching off tracking beacons.
Possible reasons for the numerical gap
Maritime analysts point to differences in scope. US counts may include naval auxiliaries, tugs, support craft and smaller dhows, while firms such as Kpler and Lloyd’s limit tallies to cargo vessels above 10,000 deadweight tons. Satellite and sensor data available to the military also capture movements not visible on standard AIS signals.
Iranian statements on control of the waterway
Iranian officials maintain that the strait remains under their authority and open only to approved traffic. Parliament Speaker Mohammad Bagher Ghalibaf said Iranian forces retain complete control and will target vessels using unauthorised routes. The IRGC reported two tankers disabled by mines after attempting an illegal passage.
Current risk assessment for shipping
The Joint Maritime Information Center classified the risk level as severe on 1 September, citing drifting or uncharted mines despite US assertions that transit lanes had been cleared. Commercial traffic remains well below pre-conflict averages of roughly 100 vessels and 20 million barrels per day.
Frequently asked questions
How many ships cross the Strait of Hormuz daily according to trackers?
Recent averages from Kpler and Lloyd’s List Intelligence fall between 12 and 14 cargo vessels per day.
Why do US figures exceed commercial data?
Differences arise from inclusion of non-cargo craft and use of military sensors that detect vessels without active AIS beacons.
What volume of oil is moving through the strait?
US estimates range from 10 million to 17 million barrels on peak days; independent sources have not confirmed volumes at that scale.
Is the strait considered safe for commercial traffic?
The Joint Maritime Information Center maintains a severe risk rating due to possible mines and ongoing conflict.
Key takeaways
- US statements cite up to 40 vessels and 18 million barrels on single days in early September 2026.
- Kpler and Lloyd’s List Intelligence record averages of 12–14 cargo vessels daily.
- US counts include support craft and dark transits not captured by standard AIS systems.
- Iran asserts control and warns vessels on unauthorised routes face targeting.
- Pre-war daily traffic averaged near 100 vessels and 20 million barrels.
