/ 2 min read / From A2B: Decoding the global supply chain

Navigating turbulent waters: The impact of Houthi attacks on global supply chains and maritime trade

Authors

Jeb Clulow,
Tom Jeffcott

Read time: 6 minutes

We have kicked off our series on global supply chains by mentioning that barcodes are now 50 years old. While that may seem old to some readers, it is still very much in its infancy when compared to piracy risks, which have been around for thousands of years. This area is evolving rapidly; Reed Smith acted in relation to the first drone attack on a vessel which had fatal consequences.

Jurisdiction-specific supply chain challenges

Piracy tends to be concentrated in areas with narrow bodies of water, where conditions are favorable to the pirates. The Red Sea and the Gulf of Aden are just such a narrow body of water, perfectly suited to pirates. We witnessed this with the flare-up of Somali piracy back in the 2000s. However, pirates are ultimately rational economic actors, and where steps are taken to impose costs on them, this will normally have the necessary deterrent effect. We saw this with the use of armed guards, convoys and vessel hardening.

The Houthis are a different challenge. They are using the geographic advantages of that same body of water but are not interested in profit. Rather, they are seeking to deliver a political message, which makes them more challenging to deal with. In addition, they are using low-cost methods of attack (relatively inexpensive drones) that are very expensive to intercept. There are also practical issues with detection and interception given the relatively short flight paths from Yemen. The Houthis are also interested in destruction rather than capturing undamaged maritime assets for ransom. Whether there are limits on the amount of destruction they wish to impose – for example, massive oil pollution affecting Yemeni fishermen, beaches, and so forth – remains to be seen. The incident involving the Sounion, where explosives were detonated across the vessel’s deck, is particularly concerning. Although, we note here that the Houthis permitted the vessel to be salved later without attacking the salvors. This suggests a degree of rationality, however in this case, reports indicate that the salvage was sanctioned and funded by neighboring states.

Between the start of the Gaza hostilities in October 2023 and September 2024, the Houthis have carried out 130 attacks on vessels in the Red Sea. The Houthis say they act in solidarity with Palestinians and that the attacks will not stop until a peace agreement is reached. The attacks have had a significant impact on global supply chains – the Suez Canal is the quickest route between Asia and Europe, with about 15% of global maritime trade volume passing through each year.

We have seen a vast reduction in the number of vessels passing through the Suez Canal following the launching of these attacks. In November 2023, 2,068 vessels passed through the Suez Canal. In September of this year, only 868 vessels transited the canal – a startling drop of 57%. In terms of traffic by deadweight tonnage, a difference of 70% has been recorded.

The attacks have had disproportionate effects on certain types of vessels. The Red Sea and Suez Canal have become practicably unnavigable for vessels with ties to the U.S., the UK or Israel, and the situation has had a dramatic impact on trade between Europe and Asia. On the other hand, Chinese and Russian vessels are allowed to pass through unscathed. Larger vessels are also affected disproportionately, being targeted more often by the Houthi attacks. Very Large Container Ships (VLCS) and Ultra Large Container Ships (ULCS) have been the most common vessels to reroute around the Cape of Good Hope, a journey that takes approximately 10 to 15 days longer than using the Suez Canal.

From week 44 of 2023 to week 7 of 2024, a drop in VLCS traffic from 53 vessels per week to just 2 was recorded. Similarly, for ULCS, this drop was from 24 per week to 0. A corresponding increase of traffic around the Cape was also recorded, from 14 vessels per week to 82, and from 0 vessels to 21, respectively.

As a consequence, there is now much more marine traffic moving around the Cape, often smaller vessels or vessels with lower free board than would historically be the case. The Cape is notorious for its strong winter storms and abnormal swells, and it remains to be seen if this creates additional risks of vessel casualty. In addition, South Africa is well known for being a favorable arrest jurisdiction with its associated ship arrest regime. The influx of additional vessels, which previously might not have traded via South Africa, may create opportunities for unsatisfied maritime claimants. Increased bunkering in South Africa might also lead to additional port congestion and potentially delay.

The most immediate consequences are delays and increase in freight. These freight costs are being passed on to cargo interests. This is done by way of freight surcharges on containers.

Where vessels continue to trade the Red Sea, some have been “going dark,” turning off their AIS transponders to reduce their susceptibility to Houthi attacks. Although AIS is compulsory for vessels over 300GT, exceptions are in place should the master believe that the use of AIS would put the vessel in danger. Indeed, Aspides, the EU’s naval force, reported that missile strikes had 75% accuracy when aimed at vessels operating with AIS on, but 96% of strikes missed when AIS was switched off. Masters will need to find a balance, where turning off AIS reduces the accuracy of attacks but also hinders the tracking capabilities of naval support.

As a general rule, charterers and cargo interests cannot insist that vessels transit via the Red Sea and the Suez Canal, and owners are protected by charterparty clauses, such as CONWARTIME and VOYWAR.

The impact of all this has been significant, mainly for European cargo interests, supply chains and the vessel owners and charterers who service this market. It also affects different countries differently, with Egypt being deprived of much of the important revenue it brings in the form of canal dues and South Africa potentially benefitting from increased vessel visits, although this creates additional port congestion. These effects will continue to be seen in the foreseeable future.

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