CENTCOM, the US Central Command directing the Iran campaign and the Hormuz blockade, reported on 18 April that a container ship had been damaged by an explosive device approximately 25 nautical miles northeast of Oman 1. Crew safe, vessel making for port. CENTCOM gave no attribution for the device.
The Gulf of Oman sits on the approach waters to the strait of Hormuz and routes a meaningful share of container traffic between the Indian Ocean and the Arabian Gulf. A vessel damaged there is not inside the IRGC's direct Hormuz operating area, but it is inside the security envelope the 40-nation Macron-Starmer mission is being written to cover. The 18 April incident coincides with the same 24-hour window in which IRGC gunboats attacked two Indian-flagged tankers inside Hormuz itself after granting them radio clearance.
CENTCOM reporting against the prior fortnight's traffic tape sharpens the pattern. Sanctioned Chinese tankers continued to transit Hormuz freely on Day 1 of the blockade while legitimate shipping fell 86 per cent ; the Day 2 volume count showed most commercial operators holding off the strait. The 18 April container-ship damage extends that maritime-incident pattern outside the chokepoint itself, in the same weekend in which signed cover for Iranian crude lapses and Indian state refiners pull away from GL-U cargoes.
CENTCOM's silence on attribution is the operative detail of the 18 April report. Without a claim of responsibility, underwriters rate the Gulf of Oman waterway as a war-risk zone by implication rather than by designation, which is how maritime-risk pricing typically widens.
