The Explorer class is a series of large container ships built for CMA CGM. They are named after explorers. The first five ships are 365 m long with a nominal capacity of 13,300 TEU; the last three are larger, at 396 m and 16,020 TEU, making them the world's largest container ships until the delivery of the Maersk Triple E Class.Advanced simulators were built, to help crews learn how to handle the new ships.