• The U.S. Navy has restarted a program to guide merchant ships through the Strait of Hormuz, aiming to ensure safe passage amid heightened regional tensions.
  • The move is expected to stabilize global oil markets by reducing the risk of disruptions to the vital chokepoint through which about 20% of the world's oil passes.
  • Shipping and insurance costs may initially decline as the enhanced security framework lowers war-risk premiums, though long-term impacts depend on Iran's response.

The U.S. Navy has quietly resumed active guidance for merchant vessels transiting the Strait of Hormuz, according to people familiar with the matter. The operation, which involves naval assets providing escort and navigational support, is designed to counter recent harassment and interdiction attempts by Iranian forces, which have spiked over the past year.

"The safety of commercial shipping is paramount," a U.S. defense official said, confirming the renewed mission. The Navy has established a formal transit corridor with enhanced communication protocols, allowing ships to request assistance in real time. The move signals Washington's commitment to maintaining freedom of navigation in one of the world's most strategically important waterways.

The Strait of Hormuz, a narrow maritime passage between the Persian Gulf and the Gulf of Oman, is a critical artery for global energy supplies. Any disruption can send oil prices soaring. Brent crude futures initially dipped 2% on the news, as traders welcomed the reduced risk of a sudden supply outage.

War-risk insurance premiums for tankers transiting the strait had risen sharply in recent months, adding significant costs for shippers. With the Navy's renewed presence, insurers may reassess those premiums downward, though the situation remains fluid. "This will likely calm the market for now, but it's not a permanent fix," said a senior analyst at a maritime security firm.

Iran has not officially commented, but past patterns suggest it may view the U.S. naval presence as a provocation. The region has seen a series of tit-for-tat seizures and attacks since 2019, when the U.S. withdrew from the nuclear deal. The new guidance program could be interpreted as a escalation, potentially triggering further incidents.

The restart comes as the U.S. military shifts focus back to the Middle East amid the Israel-Hamas conflict and broader Gulf tensions. CENTCOM officials say the operation will run indefinitely, with assets on standby to respond to any threats. The Navy has also deployed unmanned vessels to monitor the strait, according to a defense contractor involved.

Industry groups welcomed the initiative. "Predictable, safe passage is crucial for global trade," said a spokesperson for a major shipping association. "We hope this leads to sustained stability." However, some experts caution that the security umbrella may only temporarily mask deeper geopolitical risks. "If Iran feels cornered, it could still disrupt traffic with mines or missiles," noted a former U.S. naval officer.

For now, tankers are moving more freely, and crude prices have stabilized. The real test will come if Washington and Tehran fail to find a diplomatic off-ramp. Without a broader agreement, the contest over Hormuz will remain a flashpoint, with the Navy's guidance program serving as a stopgap measure.

Correction: An earlier version of this article misstated the date of the program's restart. The Navy began guiding ships on October 15, not October 17.