MSC Oscar and its two sister ships , the MSC Zoe and the MSC Oliver compose the largest fleet of three ever to sail , period . Oscar was recognised as the world ’ s largest container ship in January of 2015 . Powered by a 11S90MW-C diesel engine , Oscar is capable of a top speed of 22.8 knots . This magnificent ship gets her name from the son of the president and CEO Diego Aponte . Originally intended to support 18,400 TEU , Oscar turned out to have a much greater capacity on completion and can now carry up to 19,224 . It also has a tonnage of 197,636 and is manned by a crew of 35 , under the Mediterranean Shipping Company . 33