Exxon Valdez punitive damages to the Supreme Court which capped the damages to US $507.5 million in June, 2008. On August 27, 2008, Exxon Mobil agreed to pay 75% of the US $507.5 million damages ruling to settle the 1989 "Exxon Valdez" oil spill off Alaska. In June 2009, a federal ruling ordered Exxon to pay an additional US$480 million in interest on their delayed punitive damage awards. After repairs, "Exxon Valdez" was renamed "Exxon Mediterranean", then "SeaRiver Mediterranean" in the early 1990s, when Exxon transferred their shipping business to a new subsidiary company, River Maritime Inc. The name was later shortened
Oil tanker has a capacity of over , a length overall of and a cargo capacity of . They were the first ULCCs to be double-hulled. To differentiate them from smaller ULCCs, these ships are sometimes given the "V-Plus" size designation. With the exception of the pipeline, the tanker is the most cost-effective way to move oil today. Worldwide, tankers carry some annually, and the cost of transportation by tanker amounts to only US$0.02 per gallon at the pump. In 1954 Shell Oil developed the average freight rate assessment (AFRA) system which classifies tankers of different sizes. To make it an independent