INVESTIGATION: War premiums quadruple, and insurers now decide who still sails

Insuring a single 270,000-tonne oil tanker now costs roughly 21 million dollars, according to an S&P Global report cited by Al Jazeera on July 23, 2026. That number alone summarizes what has happened in the Strait of Hormuz and the Red Sea since the war between the United States, Israel and Iran began: the marine war-risk insurance market has stopped functioning like an ordinary market. It has become a sorting mechanism. Some shipowners still pay. Others stop sailing entirely. A premium that quadruples no longer protects a ship; it decides which ship stays at the dock.

The war-risk premium for the Strait of Hormuz now reaches 7.5 to 10 percent of hull value, up from 1 to 3 percent previously, according to the same report relayed by Al Jazeera. In the Red Sea, premiums for the Bab al-Mandeb route have climbed to 0.5 percent of hull value, compared with 0.1 percent for the Saudi western Red Sea routes. These gaps are not marginal variance: they separate a crossing that is still insurable from one that no serious underwriter will accept without a punitive premium.

This investigation relies exclusively on data published by Al Jazeera, Insurance Journal, Reuters and Lloyd's List Intelligence for the period between July 20 and 24, 2026, with a reference point dated July 8. No figure is presented as final where sources diverge, which happens often: the war-risk insurance market has never been transparent, and the current crisis only deepens that structural opacity.

Freight costs quadrupled, and insurance is only part of the story

77.96 dollars a tonne, against a historical average of 18.91

The freight cost between the Gulf and China for a 270,000-tonne cargo now reaches 77.96 dollars per tonne, up from 73.80 dollars before the previous Monday, according to Al Jazeera on July 23, 2026. That level represents roughly four times the five-year average of 18.91 dollars per tonne. This is not a one-off spike. It is a regime change.

This increase combines two factors that reports rarely separate: the freight cost tied to the scarcity of vessels still willing to take the route, and the war-risk premium itself, layered on top of the base rate. A shipowner who agrees to sail therefore pays twice for the same risk. The market absorbs both increases simultaneously, which explains a final cost higher than either increase could account for in isolation.

A sector that no longer has a single tariff

The figures themselves do not agree depending on the source consulted. S&P Global puts the war risk for Hormuz at 7.5-10 percent of hull value, while Insurance Journal, on July 23, 2026, reports that premiums for the southern Red Sea have exceeded 1 percent, up from 0.75 percent the previous Tuesday, and 0.3 percent before the Houthi blockade announcement. These two assessments do not cover exactly the same route, but the gap illustrates a simple reality. No one sets a single tariff anymore.

This absence of a common reference is not a technical detail. It means that two shipowners carrying an identical cargo on the same route in the same week can pay radically different premiums depending on which underwriter they consult and that underwriter's own prior exposure. Premium figures vary noticeably by source, and should be read as indicative ranges, not as a fixed, uniform tariff for the entire sector. A market that no longer has a common price is not a market. It is a negotiation, ship by ship.

Hormuz, the chokepoint no one can route around

From single to triple depending on the exact destination

Not every route faces this surge equally. Routes toward Jizan and Al Shuqaiq reach as high as 3 percent of hull value, while Jeddah and Yanbu remain around 0.1 percent, according to Al Jazeera. The geography of risk is not uniform. It follows precisely the zones where Houthi strikes and Iranian military tension have concentrated in recent weeks, almost port by port.

This granular pricing reveals something official statements never state as plainly: underwriters hold a more precise map of risk than the one governments have made public. They know where to raise rates before governments even officially confirm where threats are concentrating. Jizan and Al Shuqaiq pay the price of their proximity to the Houthi front, figure after figure. The underwriters' risk map sometimes outperforms the general staffs' map.

"Someone will cover you, but at 5 percent minimum"

A source in the war-risk insurance sector, cited by Reuters on July 8, 2026, in an already tense context, summarized the situation with unusual candor: "Someone will cover you, but probably at 5 percent at minimum." That sentence, spoken three weeks before the current peak, already forecast the trajectory the July 23 figures now confirm. The market did not close. It set a price few can afford.

Marcus Baker, global head of marine insurance at Marsh, cited by Al Jazeera, confirms this dynamic from inside the industry itself. What these converging accounts suggest is that the increase is not a temporary anomaly caused by panic, but a structural reassessment of risk that underwriters intend to maintain for as long as the military situation remains unstable and unresolved.

Over a thousand ships idled, an entire fleet at a standstill

1,150 vessels, 125 billion dollars frozen

According to an Allianz estimate dated July 10, 2026 and cited by CNN, roughly 1,150 cargo vessels, worth a combined 125 billion dollars, were idled in the Persian Gulf. That figure, two weeks older than the July 23 premium peak, suggests the situation has likely worsened since. No more recent data confirms whether that number has grown or held steady in the interval.

An idled fleet of this scale is not a mere logistical slowdown. Every ship at anchor represents a cargo that never arrives, a commercial contract that deteriorates, and an opportunity cost that shipping companies eventually pass on to consumer prices. An idle ship costs the insurer nothing. It costs everything to whoever is waiting on the cargo.

What the numbers do not say about shipowners walking away

None of the sources consulted precisely quantify how many shipowners have chosen to permanently abandon certain routes rather than pay current premiums. This statistical silence is itself a data point: it indicates the phenomenon is still too recent, or too fragmented across hundreds of independent companies, to produce a reliable aggregate figure within the July 20-24, 2026 window.

What can be stated with the data available is that the combination of quadrupled freight and a multiplied premium creates a profitability threshold many cargoes can no longer clear. Certain goods simply no longer justify the risk of the crossing, and it is this cold economic logic, more than fear itself, that is gradually emptying the strait of part of its usual traffic.

The military context behind the premium surge

A pause in strikes that did not reassure underwriters

On July 27, 2026, according to Euronews, the United States and Iran observed a third consecutive night without a strike, after thirteen nights of American strikes, to give diplomacy a chance. That pause could, in theory, have pushed premiums down. It did not, at least not in the figures available as of July 23-24. Underwriters do not react to a few calm days.

The firing of Iranian ballistic missiles at an American base in Jordan on July 28, 2026, at 5:45 p.m. ET according to a CENTCOM statement relayed by Townhall, illustrates why this caution is justified. All missiles were reportedly intercepted according to CENTCOM, but the episode confirms that no military lull equals, for an underwriter, a guarantee of stability. Diplomacy can suspend strikes. It does not suspend insurable risk.

What recent history teaches about how slowly premiums fall

The general trend observed in this type of market suggests that war premiums always fall more slowly than they rise. No source in this dossier provides a precise timeline for expected normalization for Hormuz or the Red Sea. Return dates to normal rates are not specified in the public documents consulted for this investigation.

This lag between military developments, which shift in hours, and the insurance market, which shifts in weeks or months, creates a window where shipowners keep paying crisis premiums even as the situation on the ground improves. A ceasefire is not negotiated with an actuary. It is proven, month after month, without incident.

The Houthi blockade, catalyst for an increase already underway

Before the blockade, a 0.3 percent premium; after, more than 1 percent

Insurance Journal lays out a precise timeline for the southern Red Sea: premiums stood at 0.3 percent before the Houthi blockade announcement, rose to 0.75 percent the Tuesday before July 23, then exceeded 1 percent by the time of publication. This three-step progression documents, almost in real time, how an insurance market reacts to a gradual escalation rather than a single, isolated shock.

The role of the Houthis in this escalation is central but not isolated. A Saudi tanker was reportedly targeted by a Houthi missile according to a claim reported by Al Jazeera on July 28, 2026, an event that fits within this sequence of continuous tension in the Red Sea. Every claim of this kind, confirmed or not in the following days, immediately feeds risk perception among the underwriters affected. A single claim, true or false, is enough to raise a price. Proof, if it comes, comes later.

One region, two overlapping risk dynamics

The Strait of Hormuz and the Red Sea do not respond to the same risk logic, even though their premiums rise in parallel. Hormuz is directly tied to the U.S.-Iran confrontation and its military aftershocks. The Red Sea responds more to the Houthi campaign, which has lasted longer but is intensifying in sync with the broader Iranian crisis. The two zones feed each other in the minds of underwriters.

This perceptual merging of risk partly explains why even routes relatively far from the heart of the conflict, such as Jeddah or Yanbu, are not entirely spared from the market's general nervousness, even though their premiums remain comparatively low, around 0.1 percent for now.

Who ultimately pays for this premium surge

The end consumer, far from the Gulf

A rise in freight cost from 18.91 to 77.96 dollars per tonne does not stop at the port of departure. It ripples through, with a lag of several weeks to several months, into the final price of every product carried on that route: fuel, raw materials, manufactured goods. The consumer thousands of kilometers from Hormuz ends up paying a fraction of that premium, never seeing the insurance bill that generated it.

None of the sources consulted for this investigation provide a precise quantified estimate of this pass-through to consumer prices at the global level for the July 20-24, 2026 period. This causal link, though economically logical, remains here a reasonable inference rather than a figure documented in the dossier available for this specific investigation.

The smallest shipowners, first to exit the market

The least capitalized shipping companies feel the effect of a multiplied premium first. A large company can temporarily absorb a cost increase by spreading it across a vast route portfolio. An independent shipowner, operating one or two vessels on specific Gulf routes, has no such flexibility. The crisis does not push everyone out of the strait at the same speed. It pushes out first those with no financial cushion.

This silent sorting, invisible in aggregate traffic statistics, is nonetheless shaping the future composition of regional maritime transport: the players who survive this period will disproportionately be the largest, the best insured, and the closest to governments capable of offering them some form of protection or financial guarantee.

The murky role of frozen Iranian assets in this equation

Trump proposes paying damages with seized Iranian money

On July 24, 2026, Donald Trump announced on Truth Social, according to a message relayed by the Syrian agency SANA, that "all damage done to ships, cargo, or anything related to it, will be paid with Iranian money that the United States holds and controls." The amount mentioned is at least 100 billion dollars in frozen Iranian assets. This proposal, if it materialized, would fundamentally change the risk calculation for the shipowners concerned.

But it remains, at this stage, a political statement and not an operational financial mechanism. No independent judicial or financial authority has validated the legal feasibility of such a plan at the time of writing. An underwriter does not set premiums based on a presidential promise that has not been translated into a binding, verifiable legal instrument.

The Iranian threat that closes this door before it even opens

Colonel Ebrahim Zolfaqari, Iranian military spokesman, warned via the IRNA agency that Iran would bar passage through the Strait of Hormuz to any company or country accepting compensation funded by these frozen assets. This threat, if carried out, would turn any American compensation into additional commercial risk rather than genuine relief for the shipowners it targets.

This dynamic illustrates the complexity of a market where political decisions, rather than easing insurable risk, can instead create an entirely new layer of it. Underwriters, already having to navigate military uncertainty, must now also assess the diplomatic risk tied to accepting or refusing a future, unguaranteed American compensation. A hundred billion promised is worth nothing against a closure threat that executes itself in a single statement.

The figures that do not match, and why that matters

S&P Global versus Insurance Journal: two readings of the same market

The gap between the S&P Global estimate (7.5-10 percent for Hormuz) and the Insurance Journal figure (over 1 percent for the southern Red Sea) is not explained solely by different routes. It also reflects distinct valuation methodologies, different client portfolios, and likely slightly staggered data collection dates within the same July 20-24, 2026 week.

Treating these two figures as interchangeable would be a methodological error. Each estimate must be attributed precisely to its source and its specific route, or the reader receives a falsely uniform picture of a market that, in reality, functions through distinct and shifting pockets of risk from one day to the next.

The tanker that reportedly hit a mine: a report to treat with the greatest caution

An unconfirmed, single-source report mentions a tanker that reportedly hit a naval mine in the region, without CENTCOM confirmation at this stage according to the documents consulted. No official agency has validated this incident at the time this investigation was written. This kind of information should be flagged as unconfirmed rather than prematurely rejected or validated by anyone following this dossier.

If such an incident were later confirmed, it would have an immediate and disproportionate effect on insurance premiums, well beyond what the gradual trends observed so far would suggest. It is precisely this kind of isolated but confirmed event that could tip an already tense market toward the near-total closure of certain shipping routes. An unconfirmed mine already does more damage to a premium chart than a confirmed mine does to a hull.

The real shipping traffic behind the premium figures

A 90 percent year-on-year traffic collapse

According to Lloyd's List Intelligence, non-Iranian transits through the Strait of Hormuz fell to 25 for the week of July 13-19, 2026, down from 108 the previous week. Inbound traffic dropped to 8 vessels, down from 43 previously. Total traffic fell roughly 90 percent year-on-year. These figures show that the traffic contraction preceded, or at least closely accompanied, the tariff surge itself observed a few days later.

VLCC movements, the very large crude carriers, fell to 9, against 35 typically. This category of vessel, the most profitable for large-scale oil transport, is also the most financially exposed in the event of an incident, which explains its disproportionate contraction relative to overall regional maritime traffic.

What a "closed" strait, according to Tehran, actually means

Tehran claims the Strait of Hormuz "remains closed," a claim that contrasts with Lloyd's List data, which show reduced but not zero traffic. This nuance must be maintained in any reading of the situation: this is not a total and verified blockade, but a severe contraction that produces an economic effect comparable to a partial closure for most non-Iranian shipowners. A strait at 10 percent of its normal traffic is not closed on paper. It is closed in the balance sheet of every shipowner who gave up.

Oman proposed, according to Reuters on July 28, 2026, a regional mechanism for Hormuz modeled on the Strait of Malacca, an approach aimed precisely at restoring some form of operational confidence on this route. No source consulted specifies what negotiating stage this proposal had reached as of July 28, nor whether it is already producing a measurable effect on current premiums.

What this crisis reveals about the fragility of global shipping

One chokepoint, a disproportionate share of the world's oil

The Strait of Hormuz remains, in the geography of global energy trade, a chokepoint with no real equivalent: a highly significant share of oil traded by sea historically transits through this passage. A 90 percent contraction in non-Iranian traffic, even temporary, is therefore never a purely regional incident. Every barrel that no longer moves through Hormuz must find another route, at a higher cost, or disappear temporarily from the global hydrocarbons market.

The price of Brent crude fell 5.2 percent to 83.75 dollars a barrel on July 28, 2026 according to Reuters, a decline attributed to hopes of an easing of the conflict rather than to a confirmed improvement in actual strait traffic itself. This price drop and the continued rise in insurance premiums tell, on the surface, two contradictory stories for the same week of July.

Two markets that do not agree on the trajectory

This divergence between the oil market, which reacts quickly and sometimes speculatively to diplomatic news, and the insurance market, which reacts slowly and relies on a cumulative assessment of real risk, is one of the most solid lessons of this period. Traders are betting on de-escalation. Underwriters, meanwhile, keep counting missiles, drones and idle ships at port.

This divergence is not incidental. It means the drop in oil prices should not, on its own, be read as a reliable signal that the crisis is ending for regional maritime trade. The price of a barrel tells the hope of the morning. The insurance premium tells the memory of the last three months.

The actors trying to untangle the situation, and their limits

A regional diplomacy that is moving, but slowly

The Omani proposal for a regional Hormuz mechanism, modeled on the Strait of Malacca and reported by Reuters on July 28, 2026, represents one of the few structural initiatives aimed at breaking this cycle of permanent crisis. A mechanism of this kind, if it materialized, would aim to separate the management of maritime traffic from direct military tension between belligerents. No precise timeline is provided in the sources consulted for its adoption.

In parallel, a bipartisan enhanced sanctions bill against Russia in the U.S. Senate, honoring the memory of Senator Lindsey Graham, explicitly mentions the Iranian regime's capacity to support destabilizing activities, linking the Russian and Iranian dossiers within a single logic of Western pressure. This legislative link changes nothing, in the short term, to current marine insurance premiums.

What is still missing for a lasting tariff de-escalation

None of the sources consulted describe a concrete mechanism by which current insurance premiums would quickly come down, even in the event of a prolonged military lull in the region. Underwriters, historically, require observation periods of several weeks to several months without incident before adjusting their pricing grids downward. Three nights without a strike, even consecutive ones, are clearly not enough.

This time lag between military news, which evolves in hours, and tariff reality, which evolves in weeks or months, will remain, in the weeks following July 28, 2026, the most reliable indicator for judging whether the region is truly heading toward lasting stabilization or merely passing through a tactical pause before renewed escalation. Three calm nights refund no premium. It will take far more than that.

The invisible weight of small cargoes in this crisis

Perishable goods, the first silent victims

Behind headlines devoted to tankers and VLCCs, another category of traffic suffers in silence: cargoes of perishable goods, time-sensitive industrial parts, and everyday consumer goods that transit the same now-surtaxed routes. None of the sources consulted provide a separate count for these categories of goods, but the pricing logic applies identically to every type of cargo using the same at-risk maritime corridors.

A low-margin cargo, unlike a barrel of oil whose global price can absorb part of the surcharge, often does not have the financial capacity to absorb a premium multiplied by four. These are precisely the cargoes that disappear first from transit registers, never becoming the subject of a dedicated report in the specialized bulletins consulted for this investigation.

An imbalance that favors the major industrial powers

The economies best able to absorb this tariff shock are those that already have alternative routes, strategic reserves, or sufficient domestic production capacity to reduce their immediate dependence on transit through Hormuz. More fragile economies, dependent on regular imports transiting this single route, absorb a disproportionate share of the economic shock generated by this premium surge.

This structural imbalance, documented indirectly by the drop in total traffic rather than by a dedicated impact study, deserves to be tracked in the weeks following July 28, 2026, as the effects of this crisis spread beyond the oil sector alone to the entire regional and global supply chain. Headlines count tankers. Ordinary cargoes disappear from the registers without a word.

What renewed or worsening fighting would immediately change

A threshold already close to a breaking point

If negotiations underway were to fail and strikes resumed at the pace observed before the July 27 pause, underwriters already have, based on the trends documented in this investigation, a pricing grid ready to adjust even higher. Nothing in the sources consulted indicates that a technical ceiling has been reached for war premiums on this route. The market has demonstrated, in a matter of weeks, its ability to absorb a fourfold increase in freight cost without fully freezing.

This elasticity, almost unsettling, suggests that the true breaking point, where no shipowner would agree to sail at any price, has not yet been reached as of July 28, 2026. No one, in the documents consulted, can predict with certainty where that point of no return lies, nor how long the current system can hold before tipping into a more generalized halt in commercial traffic.

The reverse scenario, a de-escalation that does not announce itself

Conversely, if the pause in strikes were to continue without a major incident for several additional weeks, underwriters would probably begin, following the usual market logic for this type of crisis, to revise their pricing grids downward. No premium comes down on a promise. It comes down on a prolonged, verified silence, day after day.

This scenario, plausible but not confirmed by the data available as of July 28, 2026, would depend entirely on the ability of both parties, American and Iranian, to maintain a tacit truce long enough to convince a structurally distrustful sector that the risk has genuinely decreased, and not merely been temporarily paused.

Twenty-one million dollars to insure a single tanker. Ninety percent of non-Iranian traffic gone from the world's most strategic oil-trade strait. Eleven hundred fifty ships idled, one hundred twenty-five billion dollars frozen at port. These figures, drawn from reports dated between July 20 and 28, 2026, do not describe an abstract crisis: they describe a market that has already delivered its verdict, long before diplomats deliver theirs.

Nothing in the sources consulted allows the claim that this premium surge will reverse in the coming weeks, nor that it will keep climbing indefinitely. What can be stated, with the caution this kind of market demands, is that marine insurance has effectively become an informal instrument of foreign policy: it decides, day after day, figure after figure, who still has the means to cross the strait. The war is negotiated at the White House and in Tehran. The price of the war, meanwhile, is set by underwriters in London and Zurich.

Signed Maxime Marquette, columnist

Columnist's Transparency box

Editorial positioning

This investigation is written from an acknowledged angle, pro-Western, which guides the choice of subject and the priority given to the documented economic consequences of the Gulf crisis. This positioning is a declared editorial choice, not a claim to absolute neutrality, but it implies no fixed categorization of any named government or actor as an established fact: every party cited, Iranian, American or Omani, is presented through its attributed statements and reported actions, not through a moral judgment presented as truth.

Methodology and sources

This investigation relies on the S&P Global and Marsh reports relayed by Al Jazeera, as well as on data from Insurance Journal, Lloyd's List Intelligence and Reuters for the period between July 8 and July 28, 2026, as primary sources for premium and shipping traffic figures. This data has been put in context using established secondary sources for anything related to the military and diplomatic backdrop. Every figure has been explicitly attributed to its source; where two sources diverged, that divergence was flagged in the text rather than resolved arbitrarily.

Nature of the analysis

This text distinguishes three categories of information: facts corroborated by multiple sources or confirmed by verifiable market data; estimates reported by a single source or a single underwriter, presented with explicit attribution; and the columnist's personal analysis, clearly identified by tone and phrasing, which reflects only his own judgment on the economic significance of the facts reported in this text.

Sources

Primary sources

Al Jazeera — How shipping insurance rates are rising as Hormuz and Bab al-Mandeb shut down — July 23, 2026

Insurance Journal — War-risk insurance premiums rise for the southern Red Sea — July 23, 2026

Reuters — Some war insurers advise shipowners to pause Hormuz voyages after attacks — July 8, 2026

Lloyd's List Intelligence — Strait of Hormuz briefing — July 21, 2026

Secondary sources

CNN — Lloyd's of London and the Allianz estimate on idled ships in the Gulf — July 10, 2026

SANA — Trump proposes compensating shipowners with frozen Iranian assets — July 24, 2026

WTVB/Reuters — Oil prices fall 5% to two-week low on hopes for U.S.-Iran conflict easing — July 28, 2026

Euronews — U.S. and Iran hold fire for a third night as talks are given space — July 27, 2026