Japan’s NYK Line has concluded a contract with the Keihin Dock Co shipyard, an NYK Group company, to modify a tugboat to ammonia fuel specifications. The vessel chosen for the conversion is Japan’s first LNG-fueled tug, the Sakigake, a tugboat delivered in 2015 and operated in Tokyo Bay by NYK Group company Shin-Nippon Kaiyosha Corporation.
The initiative is part of a larger Japanese project to develop vessels equipped with a domestically produced ammonia-fueled engine initiated in October 2021...
https://www.marinelog.com/technology/japans-first-lng-fueled-tug-to-be-converted-for-ammonia-fuel/