The North Korean ferry Mangyongbong-92 will arrive Thursday at Niigata port about four hours later than scheduled.
The ferry was originally scheduled to arrive at 8 a.m., Niigata Prefectural Government officials said Wednesday.
The officials said they were notified by the ship's agent.
The Mangyongbong-92 left North Korea's Wonsan port at 5 a.m. Wednesday after reportedly fixing five minor safety problems found during checks during its visit to Niigata last week.