The largest ships have a maximum theoretical capacity of 23,756 twenty-foot equivalent units (TEU).

They were the largest container ships in the world when they were launched in 2019, surpassing OOCL Hong Kong (21,413 TEU).

[1] In 2017, MSC confirmed the order of 11 container ships with a capacity of at least 22,000 TEU.

[3][4] On 28 July 2019 MSC Gülsün set a new container loading record by departing from the port of Tanjung Pelepas with 19,574 TEU of containers on board.

[5] The record has since been beaten by HMM Algeciras which carried 19,621 TEU from Yantian, China to Rotterdam.