Clean-fuel producers and shipowners are uncertain after the International Maritime Organization delayed a decision on a landmark climate rule due to US opposition.
A notable development is the completion of an ammonia-powered ship's maiden voyage in eastern China, the first to run on the carbonless compound. Meanwhile, Maersk launched a container ship that can use methanol, adding to its growing low-carbon fleet.
These efforts are part of the maritime industry's shift towards replacing dirty diesel fuel in oceangoing ships, which transport a wide range of goods.
This summer, an ammonia-powered ship completed its maiden voyage in eastern China, becoming the first of its kind to run purely on the carbonless compound.
Author's summary: Shipping industry explores cleaner fuels.