A shareholder split has placed a question mark over the future of German shipping group Hamburg Sud.

Divisions over strategy have emerged between two generations of the controlling Oetker family in a row that threatens to leave Germany’s second-largest shipping group in limbo.

The dispute is being blamed for the collapse of merger talks between Hamburg Sud and compatriot line Hapag-Lloyd that resulted in the latter’s decision to advance its talks with Chilean liner operator CSAV.

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