On the evening of June 8, the 51.5 meter long, 197 dwt towboat OT 2439 (IMO: 8995184) sank on the Yenisei River near the Kazachinsky rapids in Siberia, Russia.  The OT 2439 was pushing two empty barges downstream when it struct an unidentified underwater object. The towboat suffered hull damage to its stern with uncontrolled water ingress before the vessel went aground.  The stern of the OT 2439 eventually flooded and partially sinking.  No reports of injuries to any of the 14 crew members.

Reports state the OT 2439 had released oil pollution into the river. Authorities placed measures to contain the pollution including an oil barrier and booms. No details were released on what object was involved in the incident. Russian authorities have launched an investigation into the cause of the incident.