Iran International
The US naval blockade of Iran is entering an opaque phase, with early signs of impact emerging through both buyer hesitation and deceptive shipping practices, rather than direct naval confrontations.
In the first 24 hours after the blockade took effect at 10 a.m. ET on April 13, US Central Command said “no ships made it past the US blockade” and that “6 merchant vessels complied with direction from US forces to turn around to re-enter an Iranian port on the Gulf of Oman.”
But shipping data, satellite imagery and industry monitoring suggest the real contest may be unfolding more quietly — and more ambiguously.
Maritime analysts have observed early shifts in tanker behavior near the Strait of Hormuz, with some vessels reversing course shortly after the blockade began.
Mike Schuler, managing editor of gCaptain, wrote on X that “Tankers may already be turning away from Hormuz,” citing AIS data showing “two vessels reversing course minutes after the US blockade began.”
Other vessels appear to be adapting more creatively.
TankerTrackers reported spotting a tanker departing Kharg Island while spoofing its AIS signal to suggest it had left Saudi Arabia instead.
AIS, or Automatic Identification System, is designed to broadcast a ship’s identity, location and route. But the practice of manipulating these signals has become a hallmark of so-called “dark fleet” operations, allowing sanctioned vessels to obscure their origins and evade scrutiny.
TankerTrackers noted separately that “Dark Fleet tankers in particular may change names and flags,” urging journalists to rely on IMO numbers to track vessels more reliably.
Taken together, these patterns suggest the blockade’s early phase is being defined less by visible interdictions and more by a cat-and-mouse dynamic at sea, with tankers probing the limits of surveillance and compliance.
Enforcement gaps and shadow fleet
At the same time, enforcement itself remains uneven.
Reuters reported that a sanctioned, Chinese-owned tanker — identified as Rich Starry — transited the Strait of Hormuz during the blockade period, alongside other vessels including Murlikishan and Peace Gulf.
According to TankerTrackers, Rich Starry is “a serial AIS spoofer and a designated sanctions violator with a history of transporting Iranian refined products.”
The vessel later turned back after reaching the Gulf of Oman, while other ships stopped transmitting AIS signals altogether after entering international waters, according to ship tracking data.
These movements underscore a central challenge for US enforcement: vessels can spoof tracking data, switch flags, change names and operate in legal gray zones that complicate interdiction.
Even as Washington signals control over access to Iranian ports, the persistence of such activity suggests enforcement may be partial, contested and dependent on constant monitoring.
Buyer hesitation
Beyond shipping itself, early signs indicate the blockade may be influencing buyer behavior — potentially a more decisive factor.
TankerTrackers reported that “two million barrels of Iranian crude turned up unannounced today in India,” adding later that “India won't be accepting this oil.”
That hesitation points to a broader risk for Tehran: even if cargoes can leave Iranian waters, they may struggle to find willing buyers.
Jason Brodsky, policy director at United Against Nuclear Iran, said Washington is “trying to flip the script on Iran” after Tehran sought to tighten control over Hormuz traffic earlier this month.
By signaling it can restrict Iranian access to the same waterway, he said, the United States is effectively telling Tehran, “not so fast, we have the ability to prevent you and your vessels from using the Strait of Hormuz.”
Why this may be different from sanctions
Some analysts say the blockade could alter the underlying economics of Iran’s oil trade in ways sanctions did not.
“The blockade is doing something that 20 years of sanctions couldn't actually do,” said Mohammad Machine-Chian, a senior journalist covering economic affairs at Iran International.
He said sanctions often created opportunities for regime-connected middlemen and black-market networks to profit.
By contrast, “blockade is making that business model unfeasible,” he said, suggesting pressure may now fall more directly on the networks that previously benefited from sanctions evasion.
Pressure builds over time
Still, experts caution against expecting immediate economic collapse.
Former Royal Navy commander Tom Sharpe described the blockade as “a lever of persuasion of coercion” designed to “make Iran more susceptible to negotiations.”
“The blockade on the blockade is a strong-arm tactic to make Iran more susceptible,” he said. “In other words, as a lever, this might be a good one.”
Brodsky also said the effects are likely to build over “weeks and months,” rather than producing an instant shock.
Miad Maleki, a former US Treasury official, estimated the blockade could inflict roughly $435 million in daily economic damage, underscoring the potential scale of pressure even as its early effects remain uneven.
For now, the blockade’s first real test may be less about whether ships can pass through Hormuz, and more about whether they can do so undetected — and whether buyers are still willing to take the risk once they arrive.
Fatemeh Mohajerani, the spokesperson for the Iranian government, said on Tuesday losses from the US-Israeli military campaign are estimated at around $270 billion.
The New York Times, citing three Iranian officials and two economists, reported that early estimates broadly align with that figure, placing the damage at roughly $300 billion or higher.
Preliminary estimates by the US-based think tank Foundation for Defense of Democracies also suggest Iran absorbed roughly $150–$300 billion in economic damage.
Using a population of about 92 million, the lower estimate of $150 billion translates to roughly $1,600 per person, rising to nearly $3,250 per person under the higher estimate.
These figures reflect national wealth lost through destruction, halted production and disrupted trade.
Iran’s central bank has warned President Masoud Pezeshkian that rebuilding the country’s war-damaged economy could take more than a decade, sources familiar with internal deliberations told Iran International.
In a stark assessment delivered to the president in recent days, senior economic officials said the damage inflicted during the 40-day war with the United States and Israel—combined with Iran’s already fragile economic situation—could take up to 12 years to repair.
Industrial sectors bear largest losses
Petrochemicals account for the largest share of damage. Iran’s petrochemical sector, with annual sales of $29.1 billion, has seen about 85% of export capacity disrupted following strikes on major hubs including Mahshahr and South Pars. Estimated losses range from $30 billion to $50 billion.
Energy infrastructure has also been heavily affected. Refineries, storage depots and gas facilities have been struck, weakening a sector that generated about $78 billion in exports in 2024. Losses are estimated at $15 billion to $25 billion.
Steel production, which underpins both industrial output and reconstruction, has been severely reduced, with about 70% of capacity disrupted. Losses are estimated at $5 billion to $10 billion.
Beyond physical losses, the war has triggered a sharp contraction in output.
Experts estimated a decline of more than 10% in GDP, equivalent to $34 billion to $44 billion in lost economic activity, affecting an economy that was already under strain before the conflict.
Beyond physical damage, policy-driven disruptions have compounded the losses.
Internet shutdown
A nationwide internet blackout beginning Feb. 28 has imposed additional costs.
Direct losses are estimated at $37 million to $42 million per day, totaling $1.5 billion to $2.5 billion over more than five weeks.
Afshin Kolahi, a member of Iran’s Chamber of Commerce, said Monday indirect losses could raise the daily figure to $70 million to $80 million due to disruption to online businesses.
Online sales fell by about 80% during the shutdown, while the Tehran Stock Exchange lost 450,000 points within four days.
The shutdown is affecting multiple layers of the economy simultaneously, according to economic analyst Masoumeh Taherkhani.
“The Iranian economy is damaged at three levels by internet disruption, starting with the digital core, which employs between four and five million people,” Taherkhani told Iran International. “Then the platform layer collapses, and finally the broader economy is affected in a way that spreads across production and services.”
Taherkhani said the combined effect leads to widespread job losses. “When the economy is fully stagnant, the outcome is unemployment for workers, and that is not something that can easily be reversed,” she said.
Trade disruption and self-inflicted losses
Disruptions linked to the Strait of Hormuz have added further pressure, with estimated losses of $5 billion to $15 billion.
The restrictions have affected imports of essential goods and weakened non-oil exports, contributing to supply chain disruptions across the economy.
A US naval blockade targeting Iran’s maritime trade routes is expected to deepen losses.
Sanctions strategist and former US Treasury official Miad Maleki estimated that cutting off seaborne trade could eliminate about $435 million in daily economic activity, equivalent to roughly $13 billion per month.
Iran relies on the Persian Gulf for more than 90% of its trade, leaving it highly exposed to sustained disruption.
Oil exports of about 1.5 million barrels per day – generating roughly $139 million daily – could be halted almost entirely, removing the country’s main source of foreign currency.
What the losses could have funded
The scale of damage corresponds to investment levels that could have reshaped core sectors of the economy.
A large combined-cycle power plant with capacity of around 1,000 to 1,500 megawatts typically costs between $600 million and $1 billion to build, depending on technology and fuel infrastructure.
At the lower estimate of $150 billion in losses, Iran could have financed roughly 150 to 250 such plants. At the upper estimate of $300 billion, that rises to between 300 and 500 plants, enough to eliminate electricity shortages and significantly expand export capacity.
In housing, average construction costs for a modest apartment unit range between $30,000 and $50,000. With $150 billion, between 3 million and 5 million housing units could have been built. At $300 billion, that increases to roughly 6 million to 10 million units, enough to address shortages across major urban areas.
High-speed rail construction typically costs between $20 million and $40 million per kilometer. The lower estimate of losses could have funded approximately 3,750 to 7,500 kilometers of rail, while the higher estimate could support up to 15,000 kilometers, connecting major cities nationwide.
A modern hospital costs between $200 million and $500 million to construct and equip. The lower-end losses could have built 300 to 750 hospitals, while the higher estimate could fund up to 1,500 facilities, expanding healthcare access across the country.
What it means for individual Iranians
The per capita loss of up to $3,250 represents a substantial share of annual income for many households.
With average monthly earnings between $150 and $200, an individual earns roughly $1,800 to $2,400 per year, meaning a $3,250 equivalent exceeds a full year of income for many citizens.
If such an amount were available, it could cover between 12 and 20 months of living expenses for an average worker. Families could use it toward housing costs, including down payments or completing home purchases in smaller cities.
Small businesses could be launched with startup capital of $2,000 to $5,000, enabling self-employment in sectors such as retail, services or online commerce. Households could also afford private healthcare, education or relocation costs that are otherwise beyond reach.
Even the lower estimate per person represents several months of income, providing a buffer against inflation, job loss or unexpected expenses.
The overall range reflects damage already incurred, with additional losses building as trade, production and financial flows remain disrupted.
At up to $3,250 per person and rising, the economic toll underscores the scale of damage to Iran’s productive capacity, with long-term implications for recovery and growth.
