rolling

In naval architecture, "rolling" refers to a ship's rotational motion about its longitudinal axis. This motion is particularly undesirable as it generates significant accelerations, contributing to seasickness. While various methods exist to dampen roll, such as bilge keels and active fins, the effectiveness varies. The shape and proportions of a ship's hull significantly influence its motion in waves, with slender hulls generally exhibiting less severe rolling. Large freeboard is also crucial, especially at the bow, to keep the ship dry and prevent slamming when the bow lifts out of the water and drops.12