Before a single shot was fired at a tanker in 2026, the calculation was already happening in ship operators’ heads and in war risk underwriters’ spreadsheets. Israel’s strikes on Iranian oil infrastructure on March 7-8 did not just ignite Tehran’s fuel depots – they repriced every cargo moving through the Persian Gulf and sent Maersk, CMA CGM, Hapag-Lloyd, and every other major carrier scrambling to find routes that don’t exist. The Strait of Hormuz was never going to shrug this off. The question was always how long the chaos would last, and whether the world’s supply chains could afford to wait for the answer.
The Insurance Market Moved Before the Missiles Did
When Iran’s Islamic Revolutionary Guard Corps declared the Strait of Hormuz closed to shipping and began attacking vessels in early March 2026, marine insurers did not wait for a pattern to develop. They moved immediately. Major underwriters cancelled war risk coverage for Persian Gulf vessels effective March 5, 2026, according to Reuters. War risk premiums that had sat at roughly 0.25% of vessel value surged to as high as 1% within 48 hours – a fourfold increase. For a Very Large Crude Carrier worth $100 million, that means insurance costs jumped from $250,000 to $1,000,000 per voyage before loading a single barrel.
The benchmark VLCC tanker rate for shipping crude from the Middle East to China hit an all-time high of $423,736 per day on March 3, 2026, according to CNBC – a 94% increase from the previous Friday. LNG shipping rates simultaneously jumped over 40%. The New York Times reported the broader regional shutdown: Saudi Arabia’s Ras Tanura refinery – 550,000 barrels per day – closed after a drone strike. Qatar halted LNG production after Iranian missile attacks. Iraq’s Kurdistan suspended most output. The shutdown was not theoretical. It was operational, and shipping companies were recalculating in real time.
Maersk made the decision explicit. The world’s second-largest container carrier announced it was rerouting its ME11 and MECL services – connecting the Middle East to the Mediterranean and U.S. East Coast – around the Cape of Good Hope. According to Maersk’s own customer advisory, that adds 10-14 days to Asia-Europe voyages, extending transit times from 28-32 days to 38-42 days. Fuel costs alone add approximately $1 million per large container ship per voyage. Emergency freight surcharges hit $1,800 for 20-foot containers and $3,000 for 40-foot containers to and from Gulf ports.
170 Containerships Have Nowhere to Go
The scale of the immediate jam is staggering. Container Management reported approximately 170 containerships with 450,000 TEU capacity trapped inside the Persian Gulf as of early March 2026. Around 750 total vessels are backed up across the region, including over 270,000 TEU of stranded cargo valued at approximately $4 billion, according to gCaptain. Reuters cited a shipping CEO confirming that roughly 10% of the global container fleet is now caught in the Hormuz backup.
The geographic spread of the pain is uneven – and that asymmetry matters. South Korea has seven crude oil tankers stranded in the strait. The country imports every barrel of crude and every cubic meter of gas it uses. India has 37 flagged ships with over 1,100 crew members stranded in the Persian Gulf and Gulf of Oman. Goldman Sachs flagged India specifically in its March 2026 analysis, noting that Hormuz disruptions represent severe threats to Indian energy supply chains given the country’s overwhelming import dependency through the strait.
The dual chokepoint problem makes this worse than any previous disruption. Container Management noted that unlike the Red Sea crisis of 2024-2025, a Hormuz closure offers no viable maritime bypass for Gulf-bound cargo. A vessel rerouting from the Red Sea can sail via the Cape of Good Hope and eventually reach its destination. A vessel trying to reach Dubai, Abu Dhabi, or Basra from the Cape of Good Hope still needs to enter the Persian Gulf – through Hormuz. There is no workaround. The carrier networks designed for 2026, many of which had already adjusted to Red Sea avoidance, have hit a wall with no exit.
This Is Not the 1980s Tanker War
The closest historical precedent is the Iran-Iraq Tanker War of 1984-1987, when both sides attacked merchant shipping and insurance premiums surged. But the 1980s market had a crucial safety valve: insurance underwriters remained willing to write coverage for the right price, because tankers rarely sank completely and cargo values exceeded the premium increases. The Strait of Hormuz Insurance Market analysis at the Strauss Center notes that in 1987 conditions, insurance remained purchasable – costly, but available.
In March 2026, the insurance market has moved beyond repricing to outright cancellation. Major underwriters are not charging more; they are refusing to cover Gulf transits at any price. That represents a qualitatively different market signal. It means the ships that could physically attempt a dark Hormuz transit – the shadow fleet, uninsured owners willing to run the risk – cannot carry the volumes the global economy requires. Lloyd’s List reported that shipowners were weighing dark Hormuz transits, but the economics do not scale. You cannot replace 20 million daily barrels with a collection of sanctioned tankers operating without insurance.
Goldman Sachs analysts calculated the oil price impact at $4 per barrel for a partial one-month closure with spare capacity utilized, rising to $10-12 for a full month closure with mitigation, and $15 per barrel without mitigation measures. At the high end of these estimates, with no mitigation and an extended closure, the arithmetic is brutal. Transportation costs from the Middle East to China have gone from roughly $2.50 per barrel annually to $20 per barrel in freight rates alone. Before the energy price shock, before the supply cut, the physical act of moving oil has already become eight times more expensive.
What This Actually Means
Every oil tanker captain on earth has indeed recalculated. But the more important calculation is happening in procurement departments, central banks, and finance ministries. The shipping chaos from the Iran oil strikes is not just an energy story. It is a supply chain story, an inflation story, and a recession story rolled into one choke point. European natural gas prices surged 40% on the initial disruption. Car assembly plants dependent on Gulf-sourced components are already facing delays. The 10% of the global container fleet stuck in Hormuz backups represents goods that were manufactured, ordered, and partially paid for – and are now sitting in water that nobody can safely transit.
The New York Times covered the fires over Tehran. Reuters tracked the tanker attacks. Bloomberg calculated the freight rates. What none of them have said plainly is this: the shipping disruption from Israel’s oil infrastructure strikes will outlast the military campaign itself. Insurance markets move slowly back to normalcy after war risk events. Shipping companies that have rerouted around the Cape of Good Hope do not flip back overnight. Supply chains that absorbed 10-14 extra transit days are now built around that assumption. The chaos created on March 7-8 is not a temporary spike. It is a structural repricing of every supply chain that touches the Persian Gulf – and that is most of the global economy.
Sources
The New York Times | Reuters | CNBC | Maersk | Container Management | Goldman Sachs | gCaptain