CDP's league table Photo: CDP

Non-profit green group CDP has released new research it claims shows the world's biggest shipping lines are not on course to meet 2050 emission reduction targets.

They are not investing enough to cut greenhouse gas output by 50%, as mandated by the IMO.

The report, A Sea Change, ranks 18 of the largest publicly listed shipping companies, representing $62bn of market capitalisation, on their readiness for a low-carbon transition.