On a cruise ship, the sensation of movement (pitching and rolling) is most pronounced in the extreme forward (bow) and aft (stern) sections, as well as on the highest decks. Because the ship acts like a giant see-saw, the ends of the vessel move through the largest vertical arc as it navigates waves. High decks amplify the "sway" or side-to-side roll due to the distance from the ship's center of gravity. Conversely, the most stable part of any ship is located mid-ship on the lowest possible passenger deck. This area sits closest to the ship's pivot point and its center of buoyancy, making it the ideal location for passengers prone to motion sickness. Modern ships are equipped with advanced stabilizer fins that significantly reduce rolling, but if you are sensitive to motion, avoiding a cabin at the very front or very top of the ship is still the best strategy for a comfortable night's sleep in rougher seas.