Yes, I use the chewable ones that the ships usually have for free. At the very first bit of dizziness (my first clue that I am headed to seasick land), I chew one. They work faster that way. And I always take one before using a tender to get to shore. I am far more likely to get seasick on those than on today's huge cruise ships.
Oh, and I grab some fresh ginger at the sushi bar every night!