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Shipping containers from Hapag-Lloyd, Maersk, Geest and BG Freight Line, and others are seen stacked on the dockside at Scotland's Grangemouth container port, operated by Forth Ports Plc., in Grangemouth, U.K., on Wednesday, May 1, 2013. Arcus Infrastructure Fund 1 LP acquired Edinburgh-based Forth Ports Plc for 746 million pounds in 2011. Photographer: Mike Wilkinson/Bloomberg via Getty Images

Shipping containers from Hapag-Lloyd, Maersk, Geest and BG Freight Line, and others are seen stacked on the dockside at Scotland's Grangemouth container port, operated by Forth Ports Plc., in Grangemouth, U.K., on Wednesday, May 1, 2013. Arcus Infrastructure Fund 1 LP acquired Edinburgh-based Forth Ports Plc for 746 million pounds in 2011. Photographer: Mike Wilkinson/Bloomberg via Getty Images