War-risk premiums on Gulf transits now dwarf the freight itself (FairwayETA, August 2026)
The strait stays open on paper because a handful of London underwriters decide each morning what a passage through it is worth, and this month their answer is more than the cargo earns.
The contradiction sits in two numbers from the same week. On August 20, Kpler tracking recorded just seven commodity vessels crossing the Strait of Hormuz all day, none of them a crude tanker or an LNG carrier (Ship Universe, Aug 21). Two days earlier, the Baltic Exchange assessed earnings for a very large crude carrier on the Middle East-to-China route at nearly $510,000 a day, the highest since late June (SupplyChainBrain, Aug 18). Freight says the trade is desperate to run. Traffic says almost nobody dares. The gap between those two numbers is the war-risk insurance market, and this month the premium to cross has grown larger than the money a voyage earns.
The scale is not subtle. Before the war, a $100 million tanker could insure a Hormuz transit for roughly 0.25 percent of hull value, about $250,000. Marine war-risk cover is now quoted at 3 to 10 percent of hull value, which is $3 million to $10 million for a single passage (The Ops Con, citing The National, Jul 19). A VLCC fixture reported this month, the Mongolia Prosperity loading in the Persian Gulf for east Asia, was fixed at $31 million for the voyage (SupplyChainBrain, Aug 18). Strip out fuel, crew and the owner's capital cost, and on the upper end of the insurance range the underwriter now takes more from the voyage than the shipowner keeps. The headline is not exaggeration; it is arithmetic.
The trigger this month was the collapse of the 60-day ceasefire between Iran and the United States on August 17 (SupplyChainBrain, Aug 18). But honesty requires admitting what came before: the missiles did not pause while the ceasefire held. Two supertankers operated by ADNOC Logistics and Services, the Mombasa and the Al Bahyah, were struck by Iranian cruise missiles in July, killing one seafarer and injuring eight (The Ops Con, Jul 19). A Qatari-loaded LNG carrier was hit while passing through the strait on August 1 (Bloomberg, Aug 1). A bulk carrier, the Al Watan, was struck by an unknown projectile on August 15, two days before the truce formally ended (Lloyd's List, Aug 17). Iran kept firing through its own ceasefire, which tells you the shooting was never the real constraint, and it tells the underwriters something too.
Iran never had to close the strait, because a handful of London underwriters closed it for them, one cancellation notice at a time.
What the underwriters see explains why price never fell with the news cycle. Gulf war policies are written on seven-day terms and repriced every 24 to 48 hours, so every strike lands in a quote within two days regardless of what diplomats sign (The Ops Con, Jul 19). Marsh's global head of marine, Marcus Baker, described rates as a roller coaster tracking the oil price (S&P Global, Jul 22). A ceasefire that ships keep getting hit during is not evidence of peace to the person pricing the next seven days. It is evidence that the paper peace is worth exactly what the missiles say it is.
The slower pressure predates any missile: the structure of the market itself. When the Lloyd's Market Association's Joint War Committee widened its Listed Areas across the Arabian Gulf and Gulf of Oman in March, the consequence was contractual, not military. Capacity withdrawn at the reinsurance level cannot be restored by political announcement; it must be rebuilt one underwriting decision at a time (FairwayETA, May 6). That is why the oil price fell 12 percent in a single session when a ceasefire was announced earlier this year, yet premiums in London did not fall in step (FairwayETA, May 6).
The actors each want something incompatible. Iran wants toll over the strait, a lever on Washington that costs Tehran little. Washington wants transit to continue without owning the war. Saudi Arabia and Iraq want their promised crude barrels delivered to Asian buyers; Iraq has taken to routing cargoes through Abu Dhabi National Oil Co., which has spent years building a shuttle system through Hormuz, at times with South Korean shipowner Sinokor (SupplyChainBrain, Aug 18). Qatar wants its LNG out, and its tankers have resumed transits even after one was hit. The underwriters in London want only to price what they can see, and what they can see is burning.
History offers one clean model. In the Iran-Iraq Tanker War of 1984 to 1988, both belligerents attacked third-party commercial ships, more than 400 vessels were struck, premiums surged, and the market only normalized when the United States Navy put its own flag on the ships under Operation Earnest Will (Irregular Warfare, Mar 24). The lesson then: insurance reprices in days, escort navies take years to organize. What is different now is speed and reach. Tracking and news move premiums in hours rather than weeks, and the 2026 exposure is larger because the listed area covers more water and the fleet is older and thinner (S&P Global, Jul 22). The counterexample that argues the other way: the routine liability cover every ship carries never lapsed this time either, and Qatar's LNG kept moving through the strait even at the worst of the spring, which suggests the market bends rather than breaks (Gulf Business, 2026).
Follow the money through the chain and you find who pays. The shipowner pays the additional premium, the charterer reimburses it under BIMCO's CONWARTIME clauses, the charterer builds it into freight, and the cargo owner, then the consumer at the pump, absorbs the rest (FairwayETA, May 6). Hapag-Lloyd's war-risk surcharge of up to $3,500 per container is the most visible line item in that pass-through (FairwayETA, May 6). Who profits is equally concrete: the risk-tolerant owners still sailing, the Sinokor-style operators with Gulf experience who can now name their rate, and the underwriters collecting eight-figure premiums on seven-day paper. The people who pay in a currency other than money are the crews; the International Maritime Organization puts about 6,000 seafarers trapped aboard ships in the region because owners will not sail and crews cannot leave (The Ops Con, citing the IMO, Jul 19).
There is a quieter distortion underneath the price. More vessels are crossing the strait with their location transponders switched off to evade Iranian targeting, which raises the chance of collision and makes the traffic counts themselves unreliable (New York Times, Aug 21). The dark fleet means the seven transits Kpler counted on August 20 understate the true flow, and every untracked hull is a hazard the underwriters cannot see and therefore price blind. Risk that hides itself gets priced as if it does not exist, until the collision.
Watch two numbers together from here. If the read is right, war-risk quotes stay at multiples of hull value while Baltic Exchange earnings on the Middle East-to-China route hold near half a million dollars a day and Kpler transits stay in single or low double digits, the signature of an insurance blockade rather than a military one (SupplyChainBrain, Aug 18; Ship Universe, Aug 21). The read breaks if premiums fall back toward 1 percent of hull value within days of quiet, or if American naval escorting of merchant hulls begins, which would transfer the risk from the insurance market to a navy and reset the arithmetic entirely.
The judgment this piece earns: Iran never had to close the strait, because a small committee of London underwriters closed it for them, one cancellation notice at a time. The most effective blockade of 2026 was written in contract language, priced per voyage, and renewed every forty-eight hours. Whoever controls the price of crossing controls the strait, and this year that person is not holding a missile; they are holding a pen at Lloyd's.