Saudi Oil Export Costs Surge as War-Risk Insurance at Yanbu Triples to 3%

The Quick Take

• War-risk insurance for Saudi tankers calling at Yanbu has tripled to around 3% of vessel value from under 1% in early July
• At southern Saudi ports like Jizan, premiums are even higher, approaching the cost of routing via the Strait of Hormuz
• The surge in insurance costs effectively eliminates the cost advantage of Saudi Arabia's Red Sea workaround

Saudi Arabia's maritime workaround for the Strait of Hormuz—routing tankers through the Red Sea port of Yanbu on the kingdom's west coast—has become significantly more expensive as war-risk insurance premiums for Saudi-linked vessels have tripled to approximately 3% of vessel value, according to Reuters data. This dramatic increase from under 1% in early July reflects insurers' rapidly escalating assessment of Houthi-related attack risk in the Red Sea and Gulf of Aden. At more southerly Saudi ports including Jizan, quoted premiums are even higher, making the cost comparable to the supposedly riskier Hormuz route that the Yanbu alternative was designed to circumvent.

The tripling of war-risk premiums has material implications for Saudi Aramco's crude export economics and for global shipping cost structures. Every additional percentage point of insurance cost on a supertanker carrying two million barrels of crude translates to approximately $0.60–0.80 per barrel in incremental delivered cost for Asian buyers. This compresses the discount that Saudi Arabia is able to offer over official selling prices while maintaining margin, creating a direct squeeze on Aramco's realised export revenue. European refiners who rely on Saudi crude imported via Egyptian terminals also face higher costs, as the insurance spike applies to the entire westbound Red Sea corridor.

The key watchpoint is whether the insurance market's premium escalation forces a further routing shift entirely away from the Red Sea toward the Cape of Good Hope—a development that would add two weeks and $2–3 per barrel to landed crude costs for European buyers. Any US or allied naval operation that demonstrably degrades Houthi maritime capabilities would rapidly deflate these premiums. The macro variable is the trajectory of the Yemen conflict and whether escalation draws in broader regional actors, which would risk insurance market withdrawal rather than simple premium adjustment—a scenario that could effectively close the Red Sea to commercial shipping for extended periods.

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