NYK recently started a biofuel test run on its coal carrier Noshiro Maru, which is operated for Tohoku Electric Power Co., Inc. This is the first time in Japan that a coal carrier has been used to test biofuel for a domestic power utility company. Mitsubishi Corporation Energy Co., Ltd.
https://www.marinelink.com/news/biofuel-trialed-nyk-coal-carrying-vessel-522108