Hossein Mohebbi, a spokesman for Iran's Revolutionary Guards, moved the maritime warning beyond the Strait of Hormuz before any public chart fixed its edges. The assigned Reuters/Zawya record says the IRGC said a maritime restricted zone would extend into the Gulf of Oman and the Arabian Sea, and an Arab News/AFP account described a prohibited zone near Hormuz reaching into the Gulf of Oman and beyond. [E1] [E2] That makes the first confirmed act a jurisdictional claim, not an interdiction order with published coordinates.
The fuller sensor return gives the geography Mohebbi put on the record. Pars Today, citing his IRNA interview on Sept. 9, said the expanded area starts near Chabahar and includes Gulf of Oman and Arabian Sea routes, while the exact coordinates and details would be announced later. [E4] In practical terms, the guard was telling vessels that the next danger area may sit in the approaches before masters, insurers or foreign navies had a public box to plot.
The traffic record then shows why the sequence matters, while also marking what it does not prove. Reuters reported preliminary ship-tracking data for Sept. 9 showing seven Hormuz transits, down from 12 the prior day, with four ships exiting and three entering. [E3] The same sensor answer says Reuters did not publish individual crossing times, so the evidence does not establish that a particular vessel crossed after Mohebbi spoke.
That gap keeps the story in inference. One reading is that shipowners were already thinning movement through the strait as the IRGC widened the warning area and left the coordinates pending. The other is simpler: the seven-transit count may reflect decisions made before the statement, with the restricted-zone language still too undefined to change a master's route that day. A dated vessel-level list or maritime notice showing crossing times against Mohebbi's interview would decide between those readings. [E3] [E4]
What is settled is the authority claim itself. The IRGC did not merely describe danger inside Hormuz; through Mohebbi it asserted a future restricted area reaching from Chabahar toward Gulf of Oman and Arabian Sea routes, with details still to come. [E4] Because Chabahar sits outside the strait, the announcement tries to push Iran's leverage onto traffic that may be approaching Hormuz rather than already inside it.
That leaves masters and governments with an unfinished map rather than a clean closure. The cited records support an announced expansion, a still-unpublished coordinate set and a same-day traffic count that had fallen to single digits. [E1] [E3] [E4] Until coordinates, a maritime notice or vessel-level crossing times appear, the firm fact is that Iran stated the next danger area before it publicly drew the line.