The U.S. Navy has started escorting commercial vessels through the Strait of Hormuz after GPS signals in the critical waterway were jammed. The move comes amid rising geopolitical tensions that have already rattled global oil markets.
Why the Strait's GPS Went Dark
Navigation systems aboard ships transiting the strait have been experiencing interference, with GPS signals either weak or completely unavailable. Without reliable positioning, vessels risk grounding or collisions in one of the world's busiest chokepoints for oil and gas tankers. The U.S. naval forces stepped in to provide physical escorts, guiding ships through the narrow passage using backup navigation methods.
Officials have not named who is behind the jamming, but the disruption coincides with heightened military posturing in the region. The Pentagon has not commented on the duration of the escort operations.
Oil Markets on Edge
About a fifth of the world's oil passes through the Strait of Hormuz daily. Any disruption to that flow can push crude prices higher. Traders are already watching for signs that tanker traffic might slow or require rerouting, which would add days to delivery schedules and raise shipping costs.
The GPS jamming and naval escorts add a layer of uncertainty to an already tense market. Benchmark crude prices have ticked up in recent days, though it's too early to say how much of that is directly tied to the navigation issue.
What the Escorts Involve
Warships from the U.S. Navy's Fifth Fleet are accompanying merchant vessels through the strait, according to operational updates. The escorts are meant to ensure safe passage despite the lost GPS coverage. Ships are being advised to maintain radio contact and follow the naval vessels' lead.
Commercial shipping companies have been notified of the arrangement. Some have opted to pause transits until the situation stabilizes, while others are proceeding under escort.
The jamming itself is not new—Iran has used GPS spoofing and jamming in the past during exercises or standoffs. But the current disruption appears to be sustained and widespread, prompting the U.S. response.
Shipping companies are now waiting for guidance from the Pentagon on whether the escort program will continue through the coming weeks. The answer could determine how long oil markets remain on edge.
