Ammonia-powered ship completes voyage in Anhui

The world's first pure ammonia-powered demonstration vessel completed its maiden voyage in Anhui province on Saturday, marking an important step toward the industrial use of ammonia fuel in shipping.

Ammonia, a compound of hydrogen and nitrogen, has emerged as a promising alternative to petroleum for the maritime industry because of its nearly carbon-free nature — its complete combustion produces only water and nitrogen. The international shipping industry currently accounts for about 3 percent of global greenhouse gas emissions.

Companies in several countries, including Japan and Norway, have explored the viability of using ammonia fuel to help decarbonize shipping. However, challenges remain, including safety concerns, combustion instability and emissions of nitrogen oxides.