The International Maritime Organization has focused many of its greenhouse gas regulations on bigger ships that make up 85% of the industry’s carbon footprint.

But for green technology expert Madadh MacLaine, it is the other 15% that is ready for decarbonisation.

And that represents a missed opportunity at a time when there are calls to take quicker action to significantly reduce shipping’s greenhouse gas emissions by 2030 on a path to net zero two decades later.