Source: Alphaliner.
World's Largest Maritime Container Shipping Operators, 2015
The global container shipping business has a high level of concentration with the top 10 operators accounting for more than 60% of the total capacity. While Maersk and MSC are the two largest container shipping lines, a substantial share of their shipping capacity is leased (about 40 and 60% respectively). Chartering ships is usually done to lower operating costs and accommodate fluctuations in the demand.