Triple E-class container ship

The Triple E class is a family of very large container ships built by Daewoo Shipbuilding and Marine Engineering, now Hanwha Ocean, in South Korea for Maersk Line. Maersk ordered ten ships in February 2011 and ten more in June 2011. Each of the first twenty could carry more than 18,000 twenty-foot containers on a hull 399.2 metres long and 59 metres wide, which made them the largest container ships in the world when they were built. The name refers to economy of scale, energy efficiency and environmental impact improvement. Each ship has a twin-skeg hull with two diesel engines turning two propellers, a layout chosen for slow steaming to cut fuel use and emissions. Maersk later ordered eleven larger second-generation ships of 20,568 containers.