EU linked container ship CO2 emissions dropped in 2025 even as cargo volumes rose, but the improvement is fragile. Red Sea diversions forced vessels to take longer routes around the Cape of Good Hope, which kept emissions per container more than 45% above 2023 levels. The data shows that geopolitical risk can undo efficiency gains overnight, and the shipping industry's carbon progress remains hostage to security in the Bab el Mandeb strait. Larger containerships are starting to return to the Red Sea, but most operators still choose the Cape route. Until the security situation stabilizes, the carbon cost of each container shipped to Europe will stay elevated. The article from Lloyd's List makes clear that the 2025 emissions drop is real but fragile, and any return to normal routing could lock in the gains or reverse them depending on how fast the fleet adjusts.
