Between March and April 2026, an average of twenty commercial vessels a day rounded the Cape of Good Hope. Three years earlier, that figure stood at six. The Bab el-Mandeb Strait went the other way, falling from eighteen daily transits to five. According to IMF PortWatch GPS data, traffic via the Cape has more than tripled since 2023, while Bab el-Mandeb traffic has fallen by more than half. Roughly 70% of the freight that once moved through the Red Sea now follows the long route south.
Despite the October 2025 Gaza ceasefire and a partial Houthi pause, Suez transits in early 2026 still sit roughly 60% below pre-crisis levels. The market has spoken. Confidence does not return on a press release. Carriers have rebuilt their schedules, fleets, and contracts around the southern route, and reversing that work would cost considerably more than continuing it.
A geography no spreadsheet asked for
The arithmetic is not abstract. Each Asia to Europe round trip via the Cape of Good Hope adds between 6,000 and 11,000 nautical miles and stretches voyages by ten to fourteen days. Shanghai to Rotterdam, formerly an 11,000-mile, twenty-eight-day affair, now demands more than 15,000 miles and forty days at sea. Bunker fuel costs alone add approximately $1.75 million per round trip on a modern 18,000-TEU container vessel, based on current VLSFO prices around $625 per tonne and the fourteen extra days at sea.
Capacity tells the same story. ING Research estimates that the detour absorbs around 6% of the global container fleet on top of routine delays. BIMCO reported the container ship orderbook reached 11.8 million TEU at end-February 2026, up 28% year-on-year, with shipowners adding a record 4.8 million TEU of new capacity during 2025 even as freight rates fell 13% over the same year. The figure says less about market growth than about the quiet panic of operators trying to maintain service frequency over much longer voyages.
Pricing has settled into a structural premium. The Drewry World Container Index assessed Shanghai to Rotterdam at $3,180 per FEU in mid-April 2026, with Asia to North Europe rates running roughly 40–55% above pre-crisis levels on the Shanghai Containerised Freight Index. War risk premiums on Red Sea and Bab el-Mandeb transits now run between 0.5–1.5% of hull value per voyage, five to ten times the pre-2023 levels. None of this returns to baseline simply because the headlines have moved on.
A coastline that does not forgive
Geography compounds the geopolitical bill. The Cape of Good Hope sits at the meeting point of the warm southbound Agulhas Current, which can run at up to five knots, and the cold Benguela flowing northward, with the swells of the Roaring Forties bearing down from the south. When westerly storms push against the Agulhas flow, the result is the steep, dangerous wave field for which the region has been notorious since the Portuguese first christened it the Cape of Storms.
The danger is not historical curiosity. The European Space Agency has documented rogue waves occasionally exceeding thirty metres in the Agulhas region, where opposing currents and southern swells compress wave fields beyond the parameters most hulls are built to withstand. Modern ships dispose of horsepower, stabilisers, and forecasting that would have astonished sixteenth-century mariners, yet the sea retains its veto. In July 2024, the crew of the Handysize bulker Ultra Galaxy abandoned ship in heavy weather off the South African coast, and the vessel later ran aground; Maersk warned customers of further delays as ships sought shelter between Cape Town and Port Elizabeth.
The climate evidence makes the trend less reassuring. Britannia P&I, citing IPCC and satellite data covering 1985 to 2018, reports that extreme waves in the Southern Ocean have grown by roughly five percent over 30 years and continue to rise. Five percent sounds modest until one recalls that wave energy scales with the square of height: small increases in significant wave height translate into materially larger forces on hulls, lashings, and crews. The corridor is therefore becoming busier and meaner at the same time, and Brussels has so far treated both trends as private-sector inconveniences rather than strategic exposures.
One vessel, one decision, one demonstration
Consider a Pure Car Carrier in late April 2024, en route from Yantai to Casablanca at fifteen knots. South of the Mozambique Channel, a deep low pressure system generated a heavy easterly swell, and the original southwesterly course would have driven the vessel directly into head seas of around six metres. For a PCC, with its high freeboard, boxy hull, and cargo lashings calibrated for specific acceleration limits, this represents the worst possible encounter geometry.
The technical hazard, however, is not wave height alone but parametric rolling. When the encounter period between vessel and waves approaches twice the natural roll period, modest five-degree rolls can amplify into excursions above twenty degrees with little warning, threatening cargo securing and structural margins. The remedy is rarely brute force; it is geometry and timing. The vessel’s weather routing team accordingly advised a westward deviation south of Madagascar for twenty-four hours, allowing the swell system to track ahead rather than collide with the ship. The vessel resumed its planned course once the worst had passed.
The arithmetic justified the delay. Maximum encountered wave heights fell from six metres to four; because wave energy scales with the square of height, the vessel met roughly forty-four percent of the originally projected wave energy, an almost halving of the load on hull and cargo. Speed reduction held at two knots. Cargo claims registered at zero, structural fatigue at minimum, charter party compliance intact. The episode reads as a small operational footnote, yet it captures the new logic of the Cape of Good Hope route: when a voyage already carries an extra fortnight and almost two million dollars in fuel, the margin for weather error narrows correspondingly. Twenty-first-century weather routing is therefore no longer a discretionary upgrade. It has become an operational requirement, particularly for car carriers, LNG carriers, and laden tankers that the Cape now hosts in unprecedented numbers.
A redrawn Mediterranean
The detour has produced sharply asymmetric outcomes inside Europe. Western Mediterranean and North African hubs have absorbed the rerouted volumes; Tanger Med handled 11.1 million TEU in 2025, an 8.4% annual increase, after roughly tripling its throughput over the previous decade. Carriers transiting Africa have meanwhile selected Iberian transhipment ports such as Algeciras, Valencia, Barcelona, and Sines for cargo destined for the rest of the Mediterranean and northern Europe.
Piraeus has paid the price for two consecutive years. The COSCO-operated container terminal at Piers II and III handled 3.98 million TEU in 2025, down 6% year-on-year, after an even sharper 7.9% fall in 2024 from a 2023 baseline of 4.58 million TEU. Total throughput across all three piers reached 4.64 million TEU in 2025, down 3.15% overall, with cruise and Pier I revenue masking the underlying volume erosion at the COSCO terminals. Tanger Med now moves roughly 2.4 times the volume of Piraeus and grows at three times its pace.
The losers were not simply “eastern Mediterranean ports” as a category. Gioia Tauro, anchored by MSC’s transhipment network, absorbed the rerouting and broke the four-million-TEU barrier for the first time in 2025 with a 14% annual increase. Egyptian Port Said, by contrast, saw its Red Sea Gateway Terminal fall 13% in the first half of 2024 as Suez-related transhipment evaporated. The pattern is granular: ports with alliance flexibility adapted to the Cape geometry, while those exposed to either Suez proximity or single-shareholder constraints did not. Ports whose competitive advantage rested on proximity to Suez have therefore discovered that proximity to a closed door is worth nothing.
The damage is not only commercial. The EU Emissions Trading System for maritime transport, in force since 2024, applies to EU port calls but does not cover third-country competitors such as Morocco’s Tanger Med and Egypt’s Damietta, both of which have received European public lending while remaining outside ETS scope. Carriers already adjusting routes for security and weather thus have a further reason to relay cargo through non-EU hubs and feed it into the Union from there. The combined effect is a slow erosion of European port competitiveness precisely when traffic patterns reward whichever Mediterranean coast lies furthest from the Bab el-Mandeb.
The new normal that no policymaker has yet acknowledged
The Cape of Good Hope is unlikely to return to its pre-2023 status as a backup. Ocean Network Express’s chief executive said in late 2024 that no political breakthrough was visible and that the supply chain had adapted to “business as normal.” ING’s container shipping outlook for 2026 expects any Suez return to occur slowly and selectively, with carriers reluctant to dismantle stable Cape-based schedules in exchange for headline-driven optimism. This is structural lock-in, not preference: once schedules, multi-year contracts, and fleet deployments reorganise around the longer voyage, the cost of unwinding the new architecture exceeds the cost of operating it. The market, in short, has voted with its keels.
Two compounding forces will keep this configuration in place. The first is climate. As Cape exposure grows in volume, Southern Ocean storms grow in intensity, and weather-driven incidents therefore become a structural cost rather than an exceptional one. The second is regulation. EU ETS Maritime accelerates the relative attractiveness of non-EU Mediterranean transhipment, hollowing out eastern European port economics from a different angle.
Suez may eventually reopen for routine traffic. The Cape of Good Hope, however, has stopped being a contingency and started being a calculation that European policy has not yet bothered to make.