Ocean carrier A.P. Moller-Maersk has ordered 20 new container vessels equipped with dual-fuel engines capable of running on both liquefied natural gas and diesel.

The vessels will range in size, with the capacity to carry between 9,000 and 17,000 twenty-foot-equivalent units (TEUs), totaling a combined 300,000 TEUs. According to Maersk, 14 of the ships will be made by Chinese companies — eight by Yangzijiang Shipbuilding, and six from New Times Shipbuilding. The remaining six will be made by South Korea's Hanwha Ocean. 

The ships — which will replace existing capacity in Maersk's fleet and fill an assortment of roles — will operate as the final piece of Maersk's fleet renewal plan, as part of a larger goal to eventually phase in 50-60 new dual-fuel vessels, totaling 800,000 TEUs. The first vessels in this latest order are expected to be delivered in 2028, with the final delivery scheduled for 2030. Maersk has previously committed to reaching net-zero greenhouse gas emissions across its network by 2040.