The captain of the ship, who allowed a lower ranking officer to steer the vessel, while he was elsewhere, when it ran into Bligh reef.
March 24, 1989
It was outside of the shipping lanes when it ran aground.
On March 24, 1989, the tanker Exxon Valdez, en route from Valdez, Alaska to Los Angeles, California, ran aground on Bligh Reef in Prince William Sound, Alaska.
A massive oil spill.