CMA CGM Marco Polo is a container ship in the Explorer class owned by the CMA CGM group. On 6 November 2012, it became the largest containership in the world measured by capacity, as it can hold 16,020 TEU (twenty-foot equivalent unit containers).
The previous largest was Emma Mærsk and her seven sisters of the Mærsk E-class. The capacity is 10,000... TEU if all are fully loaded 14 ton containers, compared to 11,000 for Emma Mærsk.
The Maersk Triple E class, currently under construction, will be even larger than the CMA CGM Marco Polo, to give you an indication of the Maersk Tripple E- Class size, take a NFL stadium, NBA arena and Ice Hockey rink; put them end on end and you have the length of the Triple E. Thats the length the world biggest container ship coming this July