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Iran War Closure of Strait of Hormuz Triggers Global Bunker-Fuel Shortage

5/12/2026, 10:16:18 PM

Strait of Hormuz Closure Triggers Bunker-Fuel Shortage

The Iran war’s closure of the Strait of Hormuz on Feb. 28 halted shipments of heavy crude that feed bunker-fuel refineries, curtailing supplies to Singapore, the main bunkering hub, and triggering a rapid price surge.

Bunker Fuel’s Role and the Hormuz Disruption

Bunker fuel, a high-sulphur, low-grade oil, powers roughly 80 % of maritime trade. It is sourced from Middle-Eastern refineries in Iraq and Kuwait; the Hormuz shutdown cut off these feeds, leaving Asian ports—handling over half of 2024 seaborne trade—with dwindling reserves.

Primary Industry Voices

Henning Gloystein (Eurasia Group) warned of supply-chain spillover. Natalia Katona (OilPrice) flagged Singapore price spikes. June Goh (Sparta Commodities) said firms are absorbing costs. Oliver Miloschewsky (Aon) warned rapid cost pass-through. Håkan Agnevall (Wärtsilä) stressed green-fuel economics. Angad Banga (Caravel Group) highlighted dual-fuel value.

Key Numbers

Singapore bunker-fuel prices rose from ~$500 to >$800 per ton by early May. The European Federation for Transport and Environment estimates a war cost of €340 million (?$400 million). Clarksons reports a 2 % speed slowdown since Feb. 28. 890 LNG vessels operate, and Caravel’s >120 ship projects include one-third dual-fuel designs.

Shipping-Line Adjustments and Dual-Fuel Build-Out

Shipping lines cut speeds by ~2 % and adjust schedules to save fuel. Caravel’s Fleet Management is building >120 ships, one-third dual-fuel, enabling LNG use when bunker fuel is scarce. Fuel prices boost interest in low-emission fuel, despite limited output and higher cost.

Consumer-Facing Cost Ripple

Bunker-fuel costs lift freight rates, rippling through supply chains and raising consumer prices. In Singapore, ferry operators have increased fares and cruise lines added fuel surcharges, indicating early cost pass-through.

Official Statements

Henning Gloystein warned the fuel shock will spread beyond Asia, threatening supply chains. June Goh said firms are bearing bunker-fuel bills but may soon pass them to customers. Oliver Miloschewsky stressed cost pass-through to freight rates. Angad Banga called dual-fuel capability a hedge against volatile markets.

Environmental Critique

Environmental groups criticize President Donald Trump's 2025 decision that stalled shipping decarbonization, arguing it leaves the sector dependent on volatile bunker fuel. They also warn LNG and other alternatives may be premature due to limited infrastructure and costs.

Verbatim Quotes

  • “We just see the price in Singapore going up, up, up,” — Natalia Katona, OilPrice analyst
  • “Bunker fuel shortages tend to feed through to shipping costs more quickly than many other cost pressures,” — Oliver Miloschewsky, Aon
  • “That improves the business case for green fuels,” — Håkan Agnevall, Wärtsilä
  • “in a volatile environment optionality has a measurable economic value,” — Angad Banga, Caravel Group CEO

Outlook

Shipping lines will continue speed-reduction measures while dual-fuel shipbuilding proceeds. Industry observers expect accelerated investment in green-fuel production and close monitoring of Hormuz’s status to gauge future bunker-fuel availability.