Tankers Exam 1 Practice

This question focuses on how a major oil spill drove changes in tanker design and regulation, speeding the shift from single-hull to double-hull tankers. The Exxon Valdez spill in 1989 caused a massive oil release after a grounding in Prince William Sound, Alaska, making it painfully clear how dangerous a single-hull design can be if the hull is breached. That catastrophic event spurred bold regulatory responses: tougher liability and safety rules in the United States (like the Oil Pollution Act of 1990) and international MARPOL 73/78 amendments that required double-hull construction for new tankers and encouraged retiring older single-hull ships. As a result, operators replaced single-hull tankers with double-hull designs, and by around 2015 the global fleet had largely completed that transition. Earlier spills did raise awareness, but Exxon Valdez is the key turning point that directly linked hull design to the timeline for phasing out single-hull tankers.