MISSION BRIEF
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On April 19, a single Sri Lanka-flagged cargo hull slipped out of the Persian Gulf through the southern corridor hugging Omani waters — one of only three vessels that crossed the Strait of Hormuz that day, the lowest count since the blockade began on February 28. Before the war, 138 ships a day ran that lane. Now it’s three.
At the same hour, six thousand miles east of that empty waterway, Windward satellite and multi-source feeds detected seven VLCCs clustered off the coast of Chabahar — Iran’s deep-water port on the Gulf of Oman, east of Hormuz, outside the US Navy’s original blockade line. Combined cargo capacity, loaded: roughly 14 million barrels. One of the seven, by behavioral signature, an Iranian-flagged tanker running dark.
Off the southern edge of the anchorage, two smaller tankers were locked hull-to-hull in the middle of a ship-to-ship transfer. No AIS on the Iranian end. No manifest filed with any Western compliance desk. Just crude moving from one deck to another while the Fifth Fleet watched the wrong chokepoint.
By the time that transfer completed, United Against Nuclear Iran had already logged 50 confirmed Iranian oil loadings since the shooting started — 60 million barrels, $5 billion in IRGC revenue, much of it booked at crisis prices well above the pre-war strip.
The US blockade guards Hormuz, but the oil is going around it: Iranian media put the volume moving through the Sea of Oman corridor since April 13 at roughly 11 million barrels, a figure that shows up as zero on standard AIS and cargo tracking and tells you everything you need to know about the gap between the ledger the West is keeping and the ledger being run east of the chokepoint.
The cargo isn’t sitting. It’s moving east.
THE OPERATION
Two parallel ops
The routing is clean because it was built for this. Crude loaded at Kharg Island or Assaluyeh — 26 of the tracked 50 loadings came out of Kharg alone — then run through the Strait between Larak and Qeshm with the transponder off, the shadow fleet taught to go dark at the narrowest point of the channel, surface AIS again near Chabahar, and transfer ship-to-ship into a second hull with cleaner paper for the run east to Chinese buyers.
The second hull isn’t always Iranian. It’s often a Panama-flagged, Liberia-registered, London-insured tanker with a cargo manifest that reads Malaysian or Omani origin — papered in Port Klang, re-exported under fresh documentation, and sold into the Shandong teapot refiners at a discount to Brent that more than pays for the detour.
The system was built for this kind of terrain. Iran has spent a decade under sanctions training a fleet to move oil through exactly these seams.
On April 19, at 13:00 UTC, the US Navy’s USS Spruance boarded and seized TOUSKA — an OFAC-sanctioned, IRISL-operated Panamax container ship, IMO 9328900 — approximately 45 nautical miles southeast of Chabahar, inbound from Port Klang, Malaysia. Declared destination: Chabahar. The seizure marked the first US interdiction of an Iran-linked vessel outside the Hormuz transit zone since the blockade began.
The day before, 09:20 UTC on April 18, two IRGC gunboats had fired without warning on SANMAR HERALD, an India-flagged VLCC carrying 1.848 million barrels of crude through the northern corridor with prior Iranian clearance. The tanker reversed course and stalled in UAE waters with cargo undelivered. Total confirmed vessel attacks since the conflict began: 29.
Windward logged 140 dark-activity events around the blockade zone in the most recent reporting window — transponder blackouts, position spoofing, ship-to-ship transfers — roughly stable even as total transit volume collapsed to near zero. Less traffic, same amount of hiding: that’s not a fleet slowing down, that’s a fleet concentrating the deception into a smaller footprint that a satellite has to work harder to catch.
The Fifth Fleet is enforcing a perimeter while the IRGC sells around it.
RULES OF ENGAGEMENT
Your exposure
Brent closed Tuesday at $95.05, WTI at $86.16. Three weeks ago, before the Hormuz closure hardened and the IRGC started firing on cleared vessels, Brent was trading in the low $80s. The risk premium alone — the price of the uncertainty — is roughly fifteen dollars a barrel and holding.
The Strategic Petroleum Reserve stood at 411 million barrels at the end of 2025. On March 11, Washington authorized the largest SPR release in history — 172 million barrels, structured as an exchange, coordinated with an IEA action of 400 million barrels globally. First-phase contracts for 45.2 million barrels were awarded April 1 through May 31. The EIA now forecasts global crude production shut-ins peaking at 9.1 million barrels per day in April before easing.
AAA puts the national average for regular unleaded at $4.09 a gallon as of April 16 — up roughly 93 cents from a year ago. Retail diesel, per GasBuddy’s most recent weekly print, is $5.62 a gallon. The EIA’s April Short-Term Energy Outlook forecasts diesel peaking above $5.80 this month and gasoline averaging $4.30. California retail is already at $5.88.
Every barrel Iran transfers off Chabahar ends up in the Shandong teapots at a discount — and every barrel that doesn’t transit Hormuz lawfully keeps Brent printing a fifteen-dollar war premium that shows up in the pump price on every corner of the country, in the diesel surcharge on every load of groceries trucked into the distribution center, in the airline ticket your kids just bought for summer. And some guy on television looked into the camera and called it seasonal factors.
