Loaded tankers are said to have a high center of gravity. What does this mean?

Top-heavy objects have a high center of gravity, meaning they have a lot of weight up above the ground. Top-heavy items are more likely to fall over. Because the tanks are so tall, loaded tankers have a high center of gravity. This increases the likelihood of liquid tankers turning over. Tankers have been proven to flip over on curves even at posted speeds in tests. Slow down well below the posted speeds on curves.