Ship-tracking data compiled since the start of the Iran war shows that 279 vessels have transited the Strait of Hormuz, of which 22 have been attacked — representing a strike rate of approximately one in every 13 ships attempting passage. The figures underscore both the continued — if greatly reduced — flow of shipping through the critical chokepoint, and the real and persistent threat faced by crews and operators attempting transit.
The Strait of Hormuz is the world's most important oil shipping lane, normally handling around 20 million barrels per day. The dramatic reduction in transits since the conflict began has already sent shockwaves through global energy markets. The 22 attacks confirm that the strait is not simply deterring traffic — ships that do attempt passage face significant and credible risk.
TankerMap, which tracks over 4,100 tankers globally including VLCCs, Suezmax, and LNG carriers, has observed a steep decline in AIS signals from vessels in and around the Hormuz corridor. Many operators have opted for the longer Cape of Good Hope route rather than risk the strait. The data paints a stark picture of how dramatically the conflict has reshaped global tanker routing and the calculus of maritime risk.