The world’s first pure battery-powered tanker has gone into operation delivering bunkers, Japan’s Mitsui OSK Lines said on Wednesday.

The 1,500-dwt Asahi, completed this year by Koa Sangyo shipyard, operated completely on electric power to deliver bunker fuel to the MOL-operated car carrier 6,400-ceu Victorious Ace (built 2011) in the port of Yokohama.

A second ship will be built by Imura Shipbuilding in Japan, which is slated to deliver it next year to the MOL subsidiary Asahi Tanker.