Counts of tankers passing through the Strait of Hormuz have increased. Because the shift comes while Iran has maintained pressure over transits, interpretations of how much control it retains differ sharply.

What transit counts show

The strait carries a substantial share of the world's seaborne crude. Transits are tracked through satellite vessel position data, and weekly counts are used in markets as an indicator of whether supply is actually disrupted.

Two readings coexist. One holds that Iran's effective control has weakened. The other holds that shipowners have simply resumed sailing while absorbing risk premiums and insurance costs, with the underlying situation unchanged. Distinguishing between them requires several more weeks of data.

Crude prices and insurance

Signs of normalising transits put downward pressure on crude prices. War-risk insurance premiums, however, tend to respond more slowly than transit counts, so actual shipping costs may stay elevated for a period.

Korea, Taiwan and Japan all depend heavily on Middle Eastern crude. Conditions in Hormuz reach refining costs and domestic fuel prices on a lag. That uncertainty sits behind Korea's decision to freeze ceiling prices for petroleum products.

Hwagyo Sibo notes that what is confirmed at this point is the observed increase in transits; every account of the cause belongs to the realm of interpretation.