Market Insight · Fuel

Fuel & the Strait of Hormuz: what the Iran conflict means for freight costs

July 30, 2026 Stella Line — Market Desk 2 min read

The acute phase of the Iran conflict has calmed since mid-July, but the fuel legacy has not gone away. Through the worst of the disruption — the Strait of Hormuz slowed to a trickle, the Bab el Mandeb hit, the Red Sea closed to Saudi-linked vessels — oil ran up ~20% and bunker prices climbed roughly 12%. Even now, with tensions easing, those elevated levels have barely retraced. That timing matters, because it collides with a market that has just turned.

Why it matters even to shippers nowhere near the Gulf: bunkers are the single biggest variable cost in ocean freight, and they flow through to your invoice as the BAF (bunker adjustment factor). When bunkers spike, BAF follows — usually with a short lag — on every lane, including the Caribbean and Latin American trades.

Our read: for weeks, red-hot peak-season demand masked the fuel spike. Now that the peak has broken and base ocean rates are falling on every lane, that cover is gone — and elevated bunkers become the floor under rates, showing up first in the BAF. So the base-rate relief you are about to be offered is partly hollow if the fuel line is left open. Two practical moves: get BAF terms in writing rather than "market" on any booking you fix now, and for longer commitments, ask whether a bunker cap or fixed-BAF window is available. Small print, real money, in a market where the base rate is finally moving your way.

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