Ulsan Port Claims World’s First Ammonia Bunkering in Alternative Fuel Milestone

South Korea’s Ulsan Port Authority said it has completed what it describes as the world’s first port-to-ship ammonia bunkering operation for a commercial vessel, marking a new step in shipping’s search for scalable zero-carbon fuels.

The bunkering operation took place April 23 at Pier 2 of Ulsan Main Port, where approximately 600 metric tons of clean ammonia were supplied to a 45,000-cubic-meter ammonia dual-fuel gas carrier built by HD Hyundai Heavy Industries. The fuel was delivered using a port-to-ship, or PTS, bunkering method by Lotte Fine Chemical, which has been designated as the demonstration operator for sustainable marine fuel supply at