The Effects of Middle East Corridor Compression and the Repricing of Global Trade Routes on Agricultural Trade

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Author: Mr Buhlebemvelo Dube, an Agricultural Economist at the NAMC

South Africa’s geographical location is significant in terms of alternative trade route corridor. The conflict in the Middle East is likely to underscore the global risk toshipping routes. The international trading system now faces simultaneous compression in various shipping corridors. The Strait of Hormuz is reported to beblockaded amidst active geopolitical conflict in the Middle East. The Red Sea–Suez route remains disrupted, whilst grain exports from the Black Sea are still constrained due to uncertainty in the Middle East. These are not separate shocks; they disrupt the main arteries for the flow of energy, food, and manufactured goods. When three major maritime corridors are compromised simultaneously, distance and fuel costs become critical comparative and competitive factors. Under such strenuous and unreliable conditions, the Cape of Good Hope route shifts from being a peripheral and unviable route to a key artery of systemic adjustment for global trade.

The three maritime corridors are important at various levels. First, about 20 million barrels of crude oil pass through Hormuz daily, which accounts for nearly 30 per cent of the world’s seaborne oil trade. Second, around one-fifth of global Liquefied Natural Gas (LNG) exports also transit this strait. The reported blockade is not just a marginal risk premium; it is a fundamental disruption to the supply side. Third, asustained increase of $20–$40 per barrel in crude prices directly affects bunker fuel costs, the primary operating expense in ocean shipping. A 20 per cent rise in bunker prices increases voyage costs, tightens tanker markets, and pushes up container freight rates. Simply put, the distance from the energy source to the market amplifies the shock. 

Insecurity in the Red Sea has already diverted Asia–Europe traffic around the Southern Africa corridor. A Singapore–Rotterdam container voyage is roughly 30 per cent longer via the Cape than via Suez. Gulf–Europe tanker routes lengthen by approximately 40 per cent when Suez is avoided. When voyage distance rises, but fleet size remains fixed, effective capacity contracts. The same fleet completes fewer cargo cycles per month. Ton-mile demand increases while vessel-day supply remains unchanged. Freight rates adjust upward until equilibrium is restored, even if total trade volumes remain the same or decrease.

The shipping challenges in the Black Sea worsen this compression. In terms of global food security, Ukraine and Russia hold a significant share of global wheat, maize, and sunflower oil exports. Disruptions in that corridor have forced importers in North Africa and the Middle East to diversify their sources. Longer-distance shipments from the Americas further increase ton-mile intensity. Energy and grain markets, therefore, tighten simultaneously. Fertiliser prices, which are closely linked to natural gas and oil, follow energy benchmarks. Higher fuel costs raise agricultural input prices worldwide, resulting in deepening food insecurity, especially in sub-Saharan Africa. Corridor fragmentation, therefore, is likely to reinforce itself via: (i) energy shocks increase freight costs; (ii) freight costs push up food prices; and (iii) deepening and widening of global food insecurity. This has notable macroeconomic implications that extend beyond shipping, such as higher freight and energy costs, expanded import bills, strained current accounts, and uncontrolled inflation increases. Trade finance becomes tighter as risk premia rise. In low-income economies where food accounts for a large share of household expenditure, pass-through into domestic prices has direct welfare effects.

In this environment, the Cape corridor is among the primary and viable routesbetween Asia and Europe. Shipping data from late 2023 depicts a sustained increase in vessel calls and traffic around the southern tip of Africa compared to the pre-disruption baseline. When northern corridors become unreliable and prone to attacks, southern routes are the viable alternatives. The significance of the Cape route is evident in the extra nautical miles, increased fleet utilisation, and noticeable shifts in vessel deployment. 

For the Republic of South Africa, exposure to the changing shipping routes is direct. Exports to the Middle East rose from just over $4 billion in 2023 to nearly $4.7 billion in 2025, with agriculture accounting for approximately $1.3 billion, with citrus alone exceeding $400 million annually. It should be noted that some agricultural products destined for export markets are perishable and high-value, and depend on schedule reliability and integrity. Freight typically makes up 10–20 per cent of the landed cost for containerised horticulture. If bunker prices increase by 20 per cent and freight costs partially adjust, margins will be eroded unless exporters manage to pass on the costs to consumers, likely resulting in uncompetitive performance. Longer voyages, which often add 7 to 10 extra days under southern routing, prolong working capital cycles and increase cold-chain risks.

Whilst South Africa has diversified its crude oil imports to Angola and Nigeria, rising oil prices are likely to raise costs for diesel and fertiliser before goods reach the port. Maritime centrality alone does not provide a competitive advantage. Extra vessel traffic benefits global carriers, subject to domestic logistics systems being effective and efficient. Berth productivity, crane turnaround times, and cold-store reliability determine whether South Africa can turn corridor volatility into resilience. During simultaneous stresses in Hormuz, Suez, and the Black Sea, global trade becomes more distance-dependent and fuel-sensitive. The Cape’s role is embedded in this realignment. Its importance arises not from history but from its network position under constraints. The key question is whether South Africa can utilise its geographic centrality while managing energy, freight, and logistics risks in an increasingly fragmented trading system.

Disclaimer: The views expressed in this article is solely that of authour, and does not necessarily reflect the views of Mzansi Agriculture Talk, their employers, or other associated parties.