This is a video from a Norwegian Cruise Ship pool while traveling through rough seas. It looks like a great time. Especially if your reason for getting in the pool in the first place was to hit your head on the side and drown.
Hit the jump for the video, then remember to avoid the wave pool at water parks because there's always some little kid dropping turds in it.
Thanks to BLAKEBLAKE, who agrees why do cruise ships need pools when you can just jump over the side and swim in the ocean?