US Central Command (CENTCOM) said on Tuesday 8 September that American forces had rendered five Iranian crude carriers inoperable after ordering their crews to abandon ship: Kaviz, Charminar, Horizon 1 and Riesco in the Gulf of Oman, and Derya near Kharg Island1. The trigger was two ballistic-missile attempts against a single unnamed US warship over 7 and 8 September, both of which CENTCOM says failed, with no American casualties2.
Three days earlier the same exchange ran at a different ratio. Missiles fired at a carrier and a destroyer on 5 September brought three Iranian tankers in reply, one of them destroyed, after anonymous officials described a tanker-for-tanker rule to a US news site on 1 September. The two vessels named in that earlier release, Downy and Stark 1, were Iranian crude carriers disabled by US forces, not the American warships Iran had aimed at3.
Both attempts over 7 and 8 September missed, and CENTCOM took five hulls anyway. It is charging for the attempt rather than for the damage, and an underwriter can price that rule directly: every Iranian launch, hit or miss, costs hulls from a sanctioned export fleet that cannot be replaced through open broking. A shipowner outside the conflict can buy a replacement in London or Singapore within days. A designated Iranian operator cannot, because the broking, classification and insurance chains that move a secondhand tanker all touch jurisdictions that enforce the designations. Each hull removed is removed for the duration.
The bill also lands in the wrong department for Tehran. The Islamic Revolutionary Guard Corps (IRGC) fires the missiles; the crude that pays for the state is sold by a different arm of government, and it is that arm that absorbs the loss. Any escalation decision inside Iran now has to be argued between two ministries with opposite exposure to it.
