Exxon Valdez Diego, California. She was a relatively new tanker at the time of the spill, and was delivered to Exxon on December 16, 1986. At the time of the spill, "Exxon Valdez" was employed to transport crude oil from the Alyeska consortium's pipeline terminal in Valdez, Alaska, to the lower 48 states of the United States. At the time it ran aground, the vessel was carrying about 201,000 m³ (53.1 million gallons) of oil. After the spill, the vessel was towed to San Diego, arriving on June 10, 1989, and repairs were started on June 30, 1989. Approximately 1,600 tons of
Oil tanker but can be made from new-built hulls Shell España first used a tanker as an FPSO in August 1977. An example of a FSO that used to be an oil tanker is the "Knock Nevis". These units are usually moored to the seabed through a spread mooring system. A turret-style mooring system can be used in areas prone to severe weather. This turret system lets the unit rotate to minimize the effects of sea-swell and wind. Oil spills have devastating effects on the environment. Crude oil contains polycyclic aromatic hydrocarbons (PAHs) which are very difficult to clean up, and last