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Iran's Coded Signals Aid Oil Ships Through Blockade

3/25/2026

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Story summary
  • Maritime intelligence says ships tied to Iran's oil industry use coded signals to pass the Strait of Hormuz blockade, allowing some to transit while thousands are stranded.
  • The blockade reduced traffic to 90 ships per day, down from the usual 130.
  • Iran has exported over 16 million barrels of oil, mainly to China.
  • Tehran discusses new transit fees to control economic flow through the Strait of Hormuz.