The collapse of Hanjin Shipping four years ago had a dramatic impact on the liner ­sector.

For one of the top 10 operators to be forced into liquidation underlined the problems stemming from the 2008 financial crisis and Great Recession that ­followed.

The difficulties were not isolated to the leading South Korean operator: the world’s biggest independent boxship operator, AP Moller-Maersk, lost $1.9bn