TL;DR
X reads dark AIS tracks as a blockade; EIA says its own Hormuz AIS data has been unreliable since February and fills the gap with other analysis, a tracking problem rather than a closure.
MSM Perspective
MSM such as Lloyd's List and the FT track the premium spikes and thinned traffic, less the agencies' own caveats about the data.
X Perspective
X reads tankers going dark on AIS as proof the strait is blockaded and the insurance market has fled.
A tanker going dark is a signal about a transponder, not a verdict on a strait.
The paper argued on June 28 that Hormuz war premiums repriced without closing the tanker market — cover stayed available and syndicate appetite held. A day later, the satellite image that fuels the blockade claim carries a caveat printed by the agency that reads it. The Energy Information Administration reports that since the end of February 2026, AIS signal data for ships transiting the Strait of Hormuz have become especially unreliable, and it is revising 2026 Hormuz volumes frequently on the best available information. [1]
EIA also explains why a dark track is not a missing ship. Vessels switch off their automatic identification systems to obscure a cargo and evade sanctions, or for security when transiting hazardous waters. To account for volumes hidden that way, the agency supplements Vortexa tracking data with additional analysis rather than treating every gap as a vanished tanker. [1] The blockade thread reads the silence as proof; the statistician reads it as noise to be corrected.
The transit record that does hold is kept by a different office. The United Kingdom Maritime Trade Operations centre runs a Voluntary Reporting Scheme within a defined Voluntary Reporting Area — the zone marked on UK Hydrographic Office Maritime Security Chart Q6099 — and acts as the primary point of contact for emergency response, issuing timely and validated security alerts. [2] An advisory logged by UKMTO is a reported event with a time and a position. A cluster of dark AIS pixels is not.
The insurance layer says the same thing from the underwriting room. The Lloyd's market has stated that marine war cover remained available to vessels wishing to transit Hormuz, with the large majority of hull syndicates retaining appetite to write the risk. [3] A market in flight does not keep quoting; a repriced one does.
This is the divergence the paper keeps. X reads thinned traffic and dark transponders as a sealed strait and a fled market. Trade outlets — Lloyd's List, the FT — track the premium spikes and the reduced transits, which are real. Neither leads with the correction the sources themselves supply: the tracking data is degraded and being reconstructed, the alerts are validated elsewhere, and the cover never vanished. [1][3]
A blockade and a data gap look identical from orbit. Only one of them is fixed by better analysis, and the agency that publishes the number says this is that kind. [2]
-- CHARLES ASHFORD, London