I'm surprised no one has mentioned Sea Bands -- available from pharmacies and the like for about $10/pair. They are elastic bands placed on each wrist at a specific spot, and they've worked for me for 15 years.

Before I discovered Sea Bands or their generic equivalent, I did the whole range of medicines from Dramamine to Transderm Scope -- all with side affects.

In the last year we've done Alaska cruises twice and had a rough sea each time for a day and I never had a problem, even enjoyed eating, thanks to the Sea Bands. These have no side affects. I put them on when the ship leaves port and leave them on for the whole except when showering or when in port.

They really work for me and now seriously we are planning a Rome-Fort Lauderdale repositioning cruise on Holland America, plus the Panama Canal from Los Angeles to Fort Lauderdale.

i was on a cruise once... however in my experiece unless i looked out the window i couldnt tell the boat was even in water.... unless...

I stood still next to a wall i could tell... but as far as walking around hinging out... dont forget a cruise ship is what? 1,000 feet long? even big waves the ship is so big, and soo heavy, it rides on top of the big waves...

however one thing i wish i could have done was go up to the bow like in the movie Titanic, that would have been cool...

Btw if your ship sinks lol rest assured any US vessel with in like hundreds of miles will come to your recuse... even the US Navy...

Usually what I will do onboard is not to stay on the deck and stare out towards the water too long. Usually this is good enough for me to prevent any substantial uncomfortable feelings without having to rely on medication. If I stare too long, it is easy for me to get seasick.