Years, (and years) ago, a few mates and I did the whole young man right of passage thing and took a cruise on that rusty hulk 'Fairstar' to Port Vila via Noumea.
The first two days out it stormed relentlessly, and though not as dramatic as that, were still rough as guts.
Although I don't really get sea sick, plenty on board did.
I tell ya, those poorly ventilated lower decks had the stench of vomit / antiseptic upon them for days.