The oil tankers that cruise our seas are pretty rust buckets corroding away much faster than anyone thought possible. International shipping fleets are monitored not near as rigorously as an Enron audit. It seems that the forces of corrosion are much more aggressive than shipbuilders have anticipated. Multinational economics have made it impossible for anyone to properly maintain a fleet and stay in business. At some point these corroded tankers are going to start popping like soap bubbles spilling oil right and left. Maybe then someone will actually start to enforce the regulations that are now on the books.