Which hull type is characterized by a tendency to roll?

The hull type that is characterized by a tendency to roll is the round bottom hull. This design features a smooth, curved shape from the keel to the gunwales, which can enhance performance in calm waters by providing good efficiency and speed. However, this design also makes the boat more susceptible to rolling, especially in rough conditions or when there are waves. The center of gravity can shift easily due to the hull's shape, contributing to stability issues.

In contrast, flat bottom hulls offer more stability on calm waters and have less tendency to roll, while deep vee hulls are designed for cutting through waves and typically provide better stability by allowing the boat to ride over waves rather than rolling side to side. Multi hull designs, such as catamarans, feature two hulls, which tend to be very stable and less prone to rolling due to their wide stance.