An oil tanker has been left dead in the water off the coast of Oman after being struck by an unidentified projectile, according to the UK Maritime Trade Operations (UKMTO) agency, in the latest reported incident to heighten security concerns for commercial shipping in the region.

UKMTO said Monday that it had received a report of an incident roughly 9 nautical miles northeast of Ash Shishah, Oman, after the master of an oil tanker reported that the vessel had been struck by an unknown projectile. The strike caused damage to the engine room and left the tanker disabled, the agency said.

The crew are reported safe, UKMTO added, while the environmental impact of the incident remains unknown at this stage. The agency did not identify the vessel, its flag, or the source of the projectile in its initial reports. According to a subsequent update, the vessel was transiting the US protected lane at the time of the incident.

UKMTO monitors shipping activity and security threats across the Gulf, the Red Sea, and the wider Indian Ocean region. Its advisories are closely watched by shipowners, insurers, and naval forces operating in the area, given the volume of energy shipments that continue to transit nearby waters — including the Strait of Hormuz, the narrow corridor between Oman and Iran through which roughly a fifth of the world's oil passes. For insurers, incidents of this kind feed into the war-risk premiums charged for transits of designated high-risk areas, costs that have moved up and down with the tempo of attacks in the region since 2019.

The incident follows a series of reported attacks and disruptions to commercial shipping across the broader Gulf and Arabian Sea region in recent months, a pattern that has kept maritime security in focus alongside the wider Middle East conflict. That threat picture has flared periodically since 2019, when several tankers were damaged in attacks off the UAE port of Fujairah, and again after late 2023, when Houthi attacks on vessels in the Red Sea led many operators to reroute around the Cape of Good Hope. Previous incidents, including a reported strike on a tanker off Yanbu, Saudi Arabia, have added to operators' concerns about the safety of transiting vessels, even as overall shipping volumes through key chokepoints have held up.

Details remain limited, including the extent of the damage to the disabled vessel and whether it will require assistance or towing. Further updates from UKMTO and other maritime security monitors are expected as the situation develops, with attention likely to turn to whether responsibility for the strike is claimed or attributed, and whether it prompts additional naval escort or advisory measures beyond those already provided by the US-led and multinational naval missions that patrol the region.

The latest strike adds to a run of incidents that have kept a risk premium attached to oil prices even as headline benchmarks have been choppy. With crew safety confirmed and the environmental impact still unclear, the immediate market reaction is likely to hinge on whether this proves to be an isolated event or part of a broader pattern of attacks on merchant shipping in the wider Gulf and Arabian Sea region. Given the vessel's proximity to established chokepoints already under close watch, any escalation or confirmation of state involvement would likely reinforce the geopolitical premium already embedded in crude prices.

The report came after oil had slipped by more than $2 as traders shrugged off fresh US sanctions on Iran (earlier coverage).