More than 60 commercial ships have been struck in the Persian Gulf, the Strait of Hormuz, and the Gulf of Oman since March 1. A commercial vessel is any ship carrying cargo or fuel for profit rather than military purposes. The attacks form part of a broader escalation: fighting has intensified across the Red Sea and Black Sea at the same time, placing oil shipments under pressure on three separate fronts.
A connected chain of waterways
The Persian Gulf, the Strait of Hormuz, and the Gulf of Oman form a connected chain. The Persian Gulf narrows into the Strait of Hormuz, which opens into the Gulf of Oman before widening to the ocean beyond. Ships carrying oil out of the region pass through each segment in sequence and have no practical bypass once they enter. A chokepoint is a passage where geography gives vessels no realistic alternative route. The Strait of Hormuz is one of the most consequential chokepoints on the map.
The Red Sea and the Black Sea add two additional corridors. Both carry oil and cargo between producing and consuming regions. Pressure across all three zones at once compresses the alternatives available to cargo operators in ways that a single threatened corridor would not.
Reading the attack count
Escalation, used precisely, means the rate or severity of incidents is rising rather than holding steady. More than 60 commercial ships have been attacked in the Persian Gulf, Hormuz, and the Gulf of Oman since March 1. Those three bodies of water account for the tallied vessels. The Red Sea and Black Sea incidents are reported separately as part of the same wider pattern of fighting.
The operational problem is scale. A single compromised corridor can be rerouted around, at cost. Three corridors compromised together, covering separate geographic areas that form the primary exit routes for oil moving out of the region, leave far fewer options. The count of more than 60 commercial ships struck since March 1 is where any serious assessment of shipping risk in these lanes has to start.