How much does war-risk insurance cost for a Strait of Hormuz transit?

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As of July 2026, war-risk premiums range from 3–10% of hull value per transit depending on vessel and risk profile — USD 3–10 million for a USD 100 million tanker, versus roughly 0.25% (about USD 250,000) before the war. The US DFC reinsurance programme (USD 20bn, since March 2026) backfills withdrawn private capacity for eligible vessels. Rates change with the situation, sometimes daily.