Jane Mærsk has an LOA of 230 metres (750 feet), a moulded beam of 36.5 metres (120 feet), a draught of 11.55 metres (37.89 feet), a moulded depth of 23.6 metres (77.4 feet), a deadweight of 59,937, a gross tonnage of 53,500, independent cargo tanks with a combined capacity of 93,000 cubic metres, and space for 26 crewmembers.
The ship was designed to be capable of transporting both liquefied ammonia and LPG, thus allowing her owner to maximise the use of a single platform in serving a greater number of customers in light of evolving market demand.