Two large spills (>700 tonnes) were recorded for 2015. Both releases of oil occurred as a result of a collision. The first, in Singapore in January, resulted in a spill of approximately 4,500 tonnes of crude oil and the second in Turkey in June resulted in a spill of approximately 1,400 tonnes of naphtha. ITOPF provided technical advice to the vessels' insurers in both incidents.
For the last three and a half decades the average number of incidents involving large oil spills from tankers has reduced progressively and since 2010 stands at an average of 1.8 large oil spills per year.