Signatures made this week by 11 shipping bankers to commit their institutions to take carbon emissions into account when they finance ships is a landmark moment.

But does the initiative have the appetite or teeth to be truly impactful? And if not, should banks and other financiers aim to be more ambitious as evidence mounts of the growing global climate emergency?

With shipping remaining outside the Paris Agreement on climate change and no formal global policy yet implemented, the sector is seen by many environmental campaigners as lagging...