Heres the thing with ships in general, and seasickness.
Yes, almost all modern liners have stabilizing fins, that are designed to minimize the effect of the waves on the ship.Theres several factors that will determine how much motion you will feel.
1. The direction of the waves.If the waves come bow or stern on, or fairly close to it, you prob wont notice it unless they are fairly large.Waves coming from the sides, tend to produce more motion, since theres less ship (120 feet or so compared to 800 for a bow wave)to move.
2. The size of the waves.The bigger the wave the more like the motion.
3.Swell or chop.A swell is a more rounded wave that is usally spaced evenly apart, and can be just about any height.A chop wave, is the more classic wave, that has the white top to it, and are usually steeper, and results in more noticable notion.
4.The frequency. The more waves that come at you the more likely youll notice it.
5.Which way the current is moving vs the wind.If they cross or worse meet head on, the waves will usually be higher.
6.The higher you are on the ship, the more motion you will feel.
Seasickness.
Seasickness can be caused by any number of things ranging from fluid build up in your ears, to pyschosymatic to dehydration. It can affect everyone differently and some not at all.It can also be caused by confusion between what your eyes see and your body feels.
Heres a few tips to beat seasickness.
Stay hydrated.Drink plenty of clear fluids
Dont think about it. The more you think about it, the more likely you are to experience some type of discomfort.
If you start feeling sick, go outside,on deck and close your eyes for a minute, relax, and when you open them focus on the horizon, only.Let you eyes and body resync.
Dont fight the motion.Go with it.
If you think that you need dramamine or anyother type of med, take it at least 24 hours BEFORE you get on the ship,or as recomended in the directions.Give it time to get in your system, and do what its supposed to.If you wait until your sick, its too late.