IMO Urges Ships to Avoid Strait of Hormuz as Iran Threatens Closure Amid Escalating Tensions

## IMO Issues Hormuz Warning as Iran Threatens to Close Critical Chokepoint The International Maritime Organization (IMO) has issued an urgent advisory calling on ships to cease transiting the Strait of Hormuz, following a series of attacks on vessels operating near Oman's coast, according to Seatrade Maritime. The warning comes as geopolitical tensions in the region have escalated sharply, with former U.S. President Donald Trump declaring that a ceasefire is 'over' and Iran signalling its readiness to close the strait — one of the world's most strategically vital maritime chokepoints. ### A Critical Artery for Global Energy Trade The Strait of Hormuz is the passage through which approximately 20% of the world's oil supply transits daily, making any disruption to navigation there a matter of acute concern for global energy markets and international shipping. A closure or sustained threat environment in the strait would have immediate and far-reaching consequences for tanker operators, energy traders, and importing nations across Asia, Europe, and beyond. ### Attacks Near Oman Prompt IMO Action The IMO's intervention follows confirmed attacks on commercial vessels transiting waters near the Omani coastline. While full details of the incidents remain under assessment, the organisation's call for ships to avoid the area reflects the severity of the threat environment now facing mariners in the region. Shipping companies and vessel operators are being urged to review their route planning, consult with flag state authorities, and adhere closely to guidance issued by the IMO and relevant naval coordination bodies active in the Gulf region. ### Industry on High Alert The maritime industry has been monitoring the Gulf with heightened vigilance following a prolonged period of instability that has previously seen drone and missile attacks on commercial shipping. War risk insurers are expected to reassess premiums for vessels operating in the region, and several major operators may elect to reroute cargoes via alternative passages, including the Cape of Good Hope, accepting significantly longer voyage times to avoid the risk. Maritime security analysts warn that even a temporary closure of the Strait of Hormuz — or a sustained campaign of harassment against commercial shipping — could trigger significant volatility in freight rates and global oil prices. Shipping companies with vessels currently in or approaching the Gulf of Oman are advised to monitor IMO circulars, UKMTO advisory notices, and guidance from their respective flag state administrations as the situation continues to develop. *Source: Seatrade Maritime*