Estelle Mærsk is a container ship owned and run by the Mærsk Line. She was, in 2009, the largest ever built by terms of gross tonnage. Estelle Mærsk has a capacity of 11,000 twenty-foot equivalent units (TEU), including around 1,000 40-foot (12 m) reefer containers, though a maximum capacity of 13,500 TEU is claimed. She is identical to the seven other ships in the E class, the first built of which was Emma Maersk. An older ship of the same name was attacked with rocket propelled grenades by Iranians near Dubai in 1987, many years before the current Estelle was built.