A comprehensive analysis by Bloomberg on Monday, March 30, 2026, concludes that despite a month of intensive U.S. and Israeli airstrikes, Iran has secured its most significant strategic victory yet: a near-total tightening of its “chokehold” over the Strait of Hormuz.
The Data: A Waterway Paralyzed
Ship-tracking data compiled by Bloomberg reveals a stark transformation of the world’s most vital energy artery since the conflict began on February 28.
- Volume Collapse: In peacetime, the Strait typically sees an average of 135 vessels per day. In March 2026, that number has plummeted to barely six vessels per day.
- The 95% Drop: Total commodity crossings have decreased by 95% compared to pre-war levels, effectively stranding millions of barrels of oil and liquefied natural gas (LNG) within the Persian Gulf.
- The “Dark Fleet” Dominance: Of the 110 individual ships that managed to exit the Gulf this month, over 36% were sanctioned Iranian vessels or part of Tehran’s “dark fleet.” For oil tankers specifically, 80% of those exiting were either Iranian-owned or belonged to “cordial” nations like China.
Normalizing Control: Tolls and Approved Routes
Bloomberg reports that Tehran is no longer just threatening to close the Strait; it is successfully governing it as sovereign territory.
- The “Iran-Approved” Route: Virtually all successful crossings now bypass the traditional Omani side of the Strait, instead hugging the Iranian coast near Larak Island. Ships are reportedly turning off transponders and coordinating directly with the IRGC Navy for safe passage.
- Informal Tolls: Iran has begun charging commercial vessels up to $2 million per trip to transit the waterway. This “informal toll” is being framed by Tehran as a “security fee,” with the Iranian Parliament currently moving to legalize these charges as a permanent post-war requirement.
- Diplomatic Leverage: By allowing selective passage for nations like Spain, Malaysia, and Thailand, Iran is using the Strait as an asymmetric diplomatic tool to break NATO and EU cohesion.
The “Asymmetric Victory”
Analysts suggest that while the U.S. has “wiped out” senior Iranian leaders and hit hundreds of targets, it has failed to break the IRGC’s coastal denial capabilities.
- Electronic Warfare: Persistent GNSS jamming and satellite spoofing in the region have made navigation nearly impossible for vessels without Iranian “guidance.”
- The Price of Failure: The inability of the U.S. Navy to “unlock” the gate has kept global oil markets in a state of permanent shock, with Brent crude up 60% this month and traders now hedging for $150–$200 per barrel outcomes.
| Metric (Strait of Hormuz) | Peacetime Average | March 2026 Average |
| Daily Vessel Transits | 135 | ~6 |
| Total Monthly Crossings | ~4,000 | 195 |
| Oil Flow Status | 20% of Global Supply | Near-Total Halt (Non-Iranian) |
| Transit Toll | $0 (International Waters) | Up to $2 Million (Informal) |
A Reality “Beyond the Status Quo”
“Hormuz remains a closed gate,” said Anoop Singh, global head of shipping research at Oil Brokerage Ltd. Bloomberg warns that even if a ceasefire is reached through the “Islamabad Track,” the status quo ante is likely gone forever. Iran’s successful imposition of a tolling regime and its proven ability to paralyze the Strait have fundamentally altered the risk calculus for global shipping, insurers, and energy markets for the foreseeable future.
