The ferry makes 20 to 30 trips per annum between Niigata, Japan and Wonsan, North Korea. A typical journey lasts about 28 hours. It is mainly used by Zainichi Koreans visiting relatives in North Korea, and for school trips by Korean schools in Japan.
In 2003, the ferry became an object of suspicion in Japan , with allegations that it was being used to transport North Korea's missile parts, made by a North Korean defector to a US Senate committee. The allegations were denied by So Chung-on, the head of Chongryon's foreign affairs bureau, and so far remain unsubstantiated.