Emma Maersk is a container ship owned by the A. P. Moller-Maersk Group. When she was launched, Emma Maersk was the largest container ship ever built, and as of 2008 the longest ship in use. Officially, Emma Maersk is able to carry around 11,000 twenty-foot equivalent units (TEU) according to the Maersk Company's method of calculating capacity, which is about 1400 more containers than any other ship is capable of carrying.