This class consists of SHOUN and SHOYU MARUs, respectively completed in Jun ‘41 and Dec ’42 for Matsuoka Kisen K.K, the latter being converted to a tanker before completion. Both were requisitioned by the IJN, SHOUN MARU being converted to an auxiliary transport and SHOYU MARU serving as a general requisitioned tanker. Both were sunk between Jun ’44 and Feb ’45 by USN aircraft and US submarine.
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