Originally intended as a carrier vessel for fishing fleets.
As "HIDAKA MARU" was chartered by Japan Line to cope with the increase in trade of frozen mutton (a word that is almost impolite to use now) to Japan. There was apparently an initial reluctance to consume sheep meat there, but after 1965 exports tripled from the year before. She made 14 voyages to NZ between 5/1966 and 7/1968 in this trade, until being replaced by "JAPAN KOWHAI", fully refrigerated at 7,064 m³.
1962 - "KEIYO MARU" - Hokkaido Gyogyo Kosha KK, Tokyo, Japan.
1966 - "HIDAKA MARU" - Chuo Kaiun KK, Otaru, Japan.
1969 - "HIROSHIMA MARU" - Yashima Kaiun KK, Tokyo.
1971 - "HIROSHIMA MARU" - Nichiro Gyogyo KK., Tokyo.
1978 - "EIRYU MARU No.3" - Issei Kaiun KK, Yaizu
9/1983 - broken up at Yashiumi, Japan.