The Runner 4 vessel oil spill occurred in the ice-covered Gulf of Finland off of Estonia. The oil spill was caused by the sinking of the Dominican-registered cargo ship Runner 4 on 5 March 2006, after collision with the Malta-registered cargo ship Svjatoi Apostol Andrey. This oil spill was very difficult to to respond to and to recover oil due to severe ice conditions. 18,000 litres of heavy & light fuel was spilled into broken ice conditions.
A week after the ship sank, the Estonian Border Guard sent its multipurpose vessel EVA-316 to start the oil clean-up. Finnish oil spill response vessels Hylje, Halli and Seili also carried out clean-up operations. The Finnish Frontier Guard patrol ship Merikarhu was also sent to the site to conduct underwater robot examinations of the sunken ship. 15,000 litres of oil was collected.