The fastest-moving number in the Hormuz recovery is the war-risk insurance premium, and it has just halved. Hull war cover for a strait transit fell from roughly five per cent of a vessel’s value to around two per cent after discounts within six days of the 17 June ceasefire, according to brokers cited by the Financial Times, saving individual ships hundreds of thousands of dollars per crossing against the worst of the crisis. Traffic has responded: at least one hundred and seventy-two vessels passed through the strait between 18 June and the report, and weekend transits tripled to ninety-three, though that remains below the pre-war level of more than a hundred ships a day. After months in which the insurance market was the binding constraint, rates are finally retreating.
And yet the London underwriters who carried the risk through the war are, in the words of the trade coverage, not celebrating yet. That caution is the subject of this post, because the reasons the underwriters give for it are institutional reasons, and they point directly at the gap this site has documented throughout. The premium has halved, but it sits about twenty times above the pre-conflict baseline of roughly one tenth of one per cent, and the path back to normal runs through an institutional gate that has not opened.
The market never broke
The most important framing in the underwriters’ account is this: the market never broke, it just got very expensive. Through the entire crisis, as the post on the LMA’s safety assessment documented, cover remained available; the price simply rose to reflect the risk. The halving of premiums is the same mechanism running in reverse. The risk fell when the ceasefire was signed, so the price fell. The market is doing exactly what an insurance market does, pricing risk up when it rises and down when it falls, and the speed of the halving, six days, shows how responsive the pricing is to a genuine change in conditions.
This confirms what the LMA argued and the site echoed: insurance was never the true bottleneck. The bottleneck was the underlying safety, and the premium was just the safety risk expressed in money. As safety improves with the ceasefire, the premium falls, quickly. As safety remains uncertain, the premium stays elevated, at twenty times baseline. The number tracks the safety, and the safety tracks the institutional condition of the strait.
The frequency-severity split
The clearest insight from the underwriters explains why the premium halved but did not collapse. Captain Stephen Norman of Van Ameyde Marine put it precisely: frequency risk has reduced, while severity risk remains high. The ceasefire lowered the frequency of incidents, fewer attacks, fewer seizures, fewer active threats, so the premium fell. But the severity of a potential incident, what happens if something does go wrong, remains as high as ever, because the conditions that make an incident catastrophic are unchanged.
Those conditions are the institutional ones. The safety-assessment post catalogued them: mines still in the water, no certainty of salvage availability, uncertain ports of refuge, no coordinated casualty response. A ceasefire reduces how often an incident happens; it does nothing about how bad an incident is when it happens, because the salvage, refuge, and casualty-management infrastructure that would contain the damage still does not exist. Frequency is a function of the conflict, which is winding down. Severity is a function of the institution, which has not been built. The premium halved on the frequency improvement and stuck on the severity floor, and the severity floor is institutional.
The Joint War Committee gate
The underwriters named three conditions for rates to retreat meaningfully from here, and the first is the most revealing: formal removal of the Joint War Committee’s listed-area designation. The Joint War Committee is a body of Lloyd’s and company-market underwriters that maintains a list of areas presenting enhanced war, strikes, terrorism, and related risks. When an area is listed, underwriters price additional premium for it. Rates do not fully normalize until the area is de-listed, and de-listing requires the Committee to judge that the enhanced risk has genuinely passed.
This is an institutional gate, and it sits on top of the institutional vacuum. The Joint War Committee will not de-list Hormuz until there is sustained evidence of incident-free passage and a settled geopolitical picture, the underwriters’ other two conditions. Sustained incident-free passage requires the safe-passage assurance that, as this site has argued across many posts, only a chokepoint authority can durably provide. A settled geopolitical picture requires the permanent regime that the sixty-day dialogue has not yet produced. So the chain runs: premium normalization waits on Joint War Committee de-listing, which waits on sustained safety and settled governance, which wait on the institution that does not exist. One institution, the Joint War Committee, is waiting for conditions that another, missing institution, the chokepoint authority, would create.
The James Reason of Willis Towers Watson observation captures the dependency exactly: the longer the agreement continues without incident, the more rates will improve. Time without incident is what the Joint War Committee needs to de-list, and time without incident is what a governed strait would reliably produce and an un-governed one produces only by luck. The premium will grind down as incident-free weeks accumulate, but it grinds rather than drops because each week of safety is being earned by chance rather than guaranteed by an institution.
The Iranian insurance dead end
There is a sharp illustration of the institutional vacuum buried in the underwriters’ complaints. Iran’s Persian Gulf Strait Authority now requires transiting vessels to register and to carry Iranian-approved insurance. London underwriters deem this commercially unworkable, because the OFAC sanctions architecture, including the designation of the PGSA itself analysed in the post on sanctioning the collector, makes dealing with the Iranian insurance channel a sanctions risk. So the one body actually trying to act as the strait’s insurance authority, the PGSA, is a body the global market cannot lawfully transact with.
This is the insurance version of the whole crisis in miniature. There is a vacuum where a legitimate certifying authority should be. Iran has tried to fill it with the PGSA, but the PGSA is sanctioned and commercially unworkable, so the vacuum remains. A recognized, civilian, non-sanctioned chokepoint authority could provide the registration, the safety certification, and the standing that would let the global insurance market price the strait as routine infrastructure. The PGSA cannot, because it is the wrong kind of body, administered by the wrong kind of authority, on the wrong side of the sanctions line. The insurance market is left waiting for a legitimate authority that does not exist, because the only candidate is one it cannot touch.
What would actually normalize the rate
The premium has halved on the ceasefire, and it will keep grinding down as incident-free time accumulates and nervousness eases. Marcus Baker of Marsh noted the degree of nervousness still in the market, and nervousness fades with time. But the difference between a premium that grinds down to twenty times baseline and then ten and then five, slowly and luck-dependently, and a premium that normalizes to something near the pre-conflict baseline, is the difference between a strait that is merely quiet and a strait that is governed. Quiet earns slow improvement. Governance earns normalization.
The Joint War Committee would de-list a strait that had a recognized authority certifying safe passage, coordinating salvage, and providing the severity-reducing infrastructure that the frequency-severity split identifies as the stuck variable. It will be slow to de-list a strait that is merely not currently being attacked, because not-currently-being-attacked is not a durable condition, as the 22 June re-closure over Lebanon showed. The premium tracks the institution, in the end, as it has all along. It halved because the war paused. It will normalize only when the strait is governed. The comparison page sets out the authority that would normalize it. The rate schedule prices the service fee that authority would charge, a fraction of the war-risk premium it would retire. The calculator prices a transit. The market never broke; it is just waiting, as everyone is, for the institution.
Sources: Insurance Business, “Hormuz war premiums halve in six days. London’s underwriters are not celebrating yet,” June 2026; Financial Times reporting on hull war premiums falling from roughly five per cent to about two per cent of vessel value; Kpler data on at least 172 vessels transiting since 18 June; MarineTraffic data on weekend transits tripling to 93; quotes from Marcus Baker (Marsh), James Reason (Willis Towers Watson), and Captain Stephen Norman (Van Ameyde Marine); this site’s prior analyses on the war-risk underwriters (11 May), sanctioning the collector (14 June), the freight-backlog tail (21 June), the LMA safety assessment (23 June), and the strait’s eroding franchise (25 June).