Japanese Firms to Develop Ammonia-Fuelled Tugboat Design 8 September 2020 The companies previously worked together on Japan's first gas-powered ship in 2015, the tugboat Sakigake.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/bP1DCk3bP48/121183-japanese-firms-to-develop-ammonia-fuelled-tugboat-design