I went on a cruise through the Carribean and we got caught in some "unusually strong cross currents" as we where told over the radio. I nearly got sick, the water on the shower floor was sloshing one way then the next every second, I was hung over like a bastard. I went to the top decks and saw puke all over the place. Some of the workers even got sick.
But I would not want to be on the ship in the clip you just posted that would really suck and, suck hard.