A tugboat powered by ammonia sailed for the first time Sunday in the Hudson River to show how the maritime industry can slash planet-warming carbon dioxide emissions.

The company has been building up to the 1mW scale test of its ammonia-cracking system with demonstrations on trucks and tractors.

A languishing tugboat in New York has been given new life in a push for a greener future. The NH3 Kraken, a 67-year-old boat, set sail on a tributary of the Hudson River on Sunday night powered by ammonia.

A 67-year-old tugboat converted to run on Amogy's cleaner-burning ammonia-to-power technology has set sail for the first time

The tugboat's first sail on Sunday night is a milestone in a race to develop zero-emissions propulsion using renewable fuel, as emissions from shipping have increased over the last decade - to about 3