A North Korean oil tanker previously seized on safety grounds recently left Vladivostok after briefly disappearing from international tracking systems, the NK Pro ship tracker shows.

The DPRK-flagged Ma Du San oil tanker appears to have had a turbulent time during its visit to the Russian Far East, bouncing between Vladivostok and Nakhodka before failing a safety inspection.

The failure resulted in a detention, though a subsequent inspection seemed to give the DPRK tanker an all clear.

Following its release, the 949 Ma Du San sailed back to Vladivostok and held position near a