Hormuz Tanker Traffic Falls to 2-Month Low of 7 Ships as Attacks Surge; Crude Flow Down 27%

The Quick Take

• Only 7 commodity carriers transited the Strait of Hormuz on Tuesday — the lowest count since late July
• Crude flow through the strait dropped 27% from wartime highs to at least 10.1 million barrels per day
• Kpler tracking confirms renewed attacks reversed what analysts had recently reported as a recovery to pre-war flow levels

Tanker traffic through the Strait of Hormuz — the world's most critical oil chokepoint, through which roughly 20% of global crude supply transits — has fallen to a two-month low as renewed vessel attacks drive fresh disruption to the energy corridor. Kpler tracking data counted just seven commodity carriers traversing the strait on Tuesday, the lowest reading since late July, and recorded a 27% drop in crude flows from the wartime high to approximately 10.1 million barrels per day. The timing is particularly notable given that analysts had recently reported flows recovering to pre-war levels, suggesting the recovery has stalled or reversed.

Brent crude and WTI price trajectories face an immediate upward bias as the supply route disruption compounds existing concerns about Middle East production reliability. Tanker operators, reinsurers, and vessel managers face elevated war-risk insurance premiums for Hormuz-routed voyages, with secondary pressure on freight rates across the broader VLCC and Suezmax markets. Asian refiners — particularly those in India, China, South Korea, and Japan, which are the primary destinations for Hormuz-routed Gulf crude — face supply chain uncertainty and may accelerate purchases of non-Gulf crude grades from Russia, the US, or West Africa to hedge against a prolonged disruption.

The key indicator to watch is the weekly Kpler tanker transit count — a sustained drop below 10 ships per day for more than five consecutive days would signal structural disruption rather than tactical incident volatility. Saudi Aramco's official selling price adjustments for Asian buyers will reflect supply availability; a widening OSP discount would suggest Gulf producers are prioritizing delivery volume over price to retain market share. The macro variable is military escalation: if Iran-aligned forces widen attacks from vessels to Hormuz chokepoint infrastructure directly, the supply disruption magnitude could escalate dramatically beyond current price-impact estimates.

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