Danish shipping group Maersk Line is set to acquire German liner Hamburg Süd from Oetker Group for €3.7 billion.
The parties signed a sale and purchase agreement in March 2017, and the boards of both parties approved the deal in late April 2017.
Maersk is financing the deal with a syndicated loan.
Hamburg Süd is the world's seventh largest shipping line and its acquisition will strengthens Maersk's position as the world's biggest freight shipping operator.
Following the acquisition Maersk's market share will increase to 18.6% from 15.7%.
The deal signals the end of German family-owned group Oetker's involvement in shipping.
Consolidation in the global shipping industry has become common recently as overcapacity has driven rates to an all-time low.