from the aerial sequences I saw on yahoo.com taken from a US Coast Guard fixed wing aircraft it looks as if the tug was in a cove close to shore. This would be some distance, in hundreds of yards, from where the Exxon Valdez grounded. At 11pm CST Dec 25, 2009, yahoo.com was reporting a fuel slick a mile long in Prince William Sound.
The ship channel into Valdez, and Valdez itself, are diasters waiting to happen, or maybe I should say diasters that have happened and are waiting to happen again. It is not where I would have put an oil terminal but then no one asked me for my opinion!