Shipping lines are bracing for worsening congestion in northern Europe in the run-up to peak season.
The concerns follow the failure to resolve a German dockworkers dispute, resulting in the first strike in the country’s ports for three decades.
Dockers brought the handling of ships to a standstill for several hours on 9 June, increasing long delays, with dozens of container ships waiting to enter ports in Hamburg, Bremerhaven, Emden, Wilhelmshaven and Bremen.
