Houthi Blockade Forces Saudi Crude Onto 48-Day Cape Detour, Adding $1M+ Per Voyage

Saudi Arabia's Red Sea export lifeline is fraying. The Houthis' maritime ban on Saudi shipping, effective July 20 at 12:00 UTC, threatens sanctions and targeting for any vessel calling at Saudi ports — and ship-tracking data confirms tankers are already responding by abandoning the Bab el-Mandeb route entirely.

Why Yanbu matters: With the Strait of Hormuz already choked by the ongoing conflict (see West Asia Desk coverage of the Hormuz interdiction), Riyadh had funneled crude westward via the East-West Pipeline (Petroline) to Yanbu, making the Red Sea port Saudi Arabia's critical relief valve during the Strait of Hormuz closure. That workaround now sits inside the declared blockade zone — leaving the kingdom squeezed on both flanks for the first time, a dynamic the West Asia Desk has been tracking in parallel.

The reroute is real, not theoretical. Kpler and LSEG ship-tracking confirmed the tanker Rodos, loaded at Yanbu and bound for India, reversed course toward the Suez Canal. South Korea's Hyundai Oilbank was separately chartering VLCCs specifically for the Suez/SUMED option out of Yanbu. Aramco has operationalized this as a formal alternative: crude now moves from Yanbu to Egypt's Ain Sukhna terminal, then via the Suez-Mediterranean (SUMED) pipeline to Sidi Kerir for reloading.

The cost of the detour:

• Time: Normal Yanbu-to-Asia transit via Bab el-Mandeb runs ~19 days. The Suez/Mediterranean/Cape of Good Hope reroute stretches that to ~48 days — nearly a month of added floating transit inventory.

• Fuel: Bunker costs more than double, from roughly $1.26M to $2.87M per voyage.

• Canal fees: Suez transit adds another ~$1M.

• Buyer-side pricing impact: Aramco is weighing a new pricing mechanism for Asia-bound cargo reflecting the reroute — sources estimate this could cost Asian buyers roughly $10M extra per shipment, or $5/barrel. Separately, Windward's tracking puts the broader SUMED/Cape alternative at ~$9/barrel in added transport cost.

The double-chokepoint squeeze: Saudi Arabia now faces simultaneous maritime pressure on both flanks — Hormuz (West Asia Desk's core beat) and Bab el-Mandeb — a first for the kingdom. Aramco Chairman Yasir Al-Rumayyan has called the Red Sea route an economic lifeline; Kpler data shows Bab el-Mandeb crude/product flows had climbed to over 4 million bpd in June before the ban, meaning the volumes now needing to reroute are substantial.

Watch next: VLCC draft constraints through Suez may force lightering, and a July 24 Houthi clarification muddied whether the ban targets only Saudi-flagged vessels or all vessels lifting Saudi crude — a distinction that will determine how many operators actually divert versus continue risk-tolerant Bab el-Mandeb transits.

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