Never sea sick myself, but when I was on Deep Water trawlers we'd get some pretty horrendous weather around Bear Island and North Coast of Iceland and the lads were never sick, even from the smell of the boiling cod liver boiler house (a yuk smell) but on getting back into the Humber into smooth waters some would be making for the bulwarks, but god help you if you made a comment or grinned.
Trawler mens' cure for seasickness (worked for me) get the young lad stupid enough (me) to say he feels sick then you are immediately whipped up to the foc'le head, tied to the rails facing for'd so that you can see the waves rolling towards you, believe me as a young teenager (13) you are too scared ever to even think about being sick, they leave you there for two plus hours, release you, wrap you in a blanket, sit in the galley for 30 minutes or so to thaw out and then you're back to work, seemed cruel at the time but there are no passengers on a deep water trawler, my first trip MN at aged 16 we experienced a hurricane, my previous experience stood me well.....................happy days!!!