German industrialist Kurt Zech is ringing in the changes at Zeaborn by bringing in a restructuring expert to take the company forward.

The ship operator's managing partner and co-founder Jan-Hendrik Tobbe has left the company to be replaced by corporate restructuring expert Sven Lundehn.

The move is the latest in a series of senior management changes at the Bremen-based group which raise questions over the financial health of the fast-expanding German shipping company.