The vessel in Port of Hereke Diler named M/V Altenavi vessel spilled fuel from deck vessel overflow during fuel transfer. As a result of this event, ports, vessels, and coastline were contaminated with oil. Mavi Deniz Environmental Services Co. implemented an oil spill response operation with an oil recovery vessel, oil barrier, trained personnel, and other equipment within an hour. Sea and cleaned, and the operation was completed on 03.03.2011. Collected waste has been submitted to the IZAYDAS waste disposal facility.