My sea legs are getting stronger as I get older, but every couple of years I'll get bit with the sickness bug. Usually it's because I partied too hard the night before; didn't eat or get enough rest.

So this process works for me: Get to good night's rest. Eat something 1 hour before going out. Don't go under cabin until legs are firmly on for the day, especially on a Diesel. Keep eyes on the horizon at all times and bend your knees with the swell to keep it flat and level. Coffee, Gator-Aide & Beer in that order.

Seasickness sucks but its nothing compared to altitude sickness. I have had both many times and if forced to pick, I'll take seasickness every time.