Shipping industry on high alert in Middle East after US strikes on Iran

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epa12187819 A photo taken by a drone shows the Maersk Columbus container ship arriving from Norfolk Harbour, USA, en route to Antwerp Harbour, near Hansweert, the Netherlands, 20 June 2025. According to the EU Commission, EU exports increased by 8.6 percent, while imports rose by 4.1 percent in the first quarter of 2025, driven by an acceleration in trade with the United States amid the threat of a trade war. The EU and US are engaged in trade talks ahead of a July tariff deadline set by US President Trump. EPA-EFE/OLIVIER HOSLET

Shipping giant A.P. Moller-Maersk said it continues to transit the Strait of Hormuz but is ready to re-evaluate its position based on the information available.  

PHOTO: EPA-EFE

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ATHENS - The shipping industry was placed on high alert on June 22 with

warnings that Tehran could retaliate

against commercial vessels following US air strikes against Iran’s nuclear facilities.

Greece, home to more oil-tanker capacity than any other nation, cautioned its ship owners to think again if they are considering entering the Persian Gulf in the wake of US air strikes.

Vessels planning to sail through the Strait of Hormuz, the waterway that sits at the mouth of the region, should “reassess passage” until the situation normalises, according to a circular seen by Bloomberg that its shipping ministry sent to vessel owners. It advised waiting in nearby safe ports.

Naval forces in the area warned that ships, especially US-linked ones, could be at heightened risk.

Shipping giant A.P. Moller-Maersk said it continues to transit Hormuz but is ready to re-evaluate its position based on the information available.  

The actions of the maritime industry – and its risk tolerance – will be a critical detail in the wake of the strikes because of Iran’s proximity to the Strait of Hormuz, a conduit for a fifth of the world’s oil and an unavoidable sea route into the Persian Gulf.

Athens’ warning is the latest sign of pressure on shipping markets as attacks on Iran escalate.

Tanker earnings already soared by almost 90 per cent since Israel first started conducting air strikes on June 13.

Advice from Greece – one of the world’s largest ship-owning nations – to its vessel owners would have a major impact on commodity transportation markets, especially oil. 

There is every chance that ship owners will ignore the advice because the Persian Gulf is too important a region for them to avoid and rates can always rise to compensate for the risk of sailing in the region.

Operators that do decide to transit Hormuz should adopt the highest security level available and maintain the maximum possible distance from Iranian waters, Greece’s ministry added.

In the June 22 notice, the ministry cited concern around a

possible closure of Hormuz

as a reason behind its message. 

Officials at three Greek tanker companies said they were still assessing the situation. One did indicate he might still allow his firm’s tankers to enter the region, while another said its ships would likely stay away.

Greek government spokesman Pavlos Marinakis said in a statement that the government, via the shipping ministry, advised Greek-flagged and Greek-owned ships in the area of the Strait of Hormuz to go to a safe port until the situation normalises. 

Bigger risk

Naval groups are also warning of greater risk. 

On June 22, the Joint Maritime Information Centre (JMIC), a liaison between navies and merchant shipping in the region, said the Washington’s air strikes mean US-linked ships sailing through the Red Sea and Gulf of Aden face a high risk of attack. 

Yemen’s Houthi rebel group issued fresh threats against American commercial and naval ships earlier in the day. There had been a ceasefire between the US and the Houthis in early May, geared towards limiting the group’s attacks on the US Navy. US-linked ships should consider re-routing, JMIC said in its update.

Still, it said some US-associated vessels have successfully transited the Strait of Hormuz, “which is a positive sign for the immediate future”.

Separately, the European Union’s naval force in the region raised its threat assessment for US-linked vessels as a result of the strikes. It now sees a severe threat to ships linked to the US and Israel and a low risk for all other ships. 

“This does not exclude the possibility of all merchant vessels being targeted in the future,” it said in an update published by France’s Mica Centre, which helps coordinate global maritime security. BLOOMBERG

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