Eat light meals prior to your trip. Avoid heavy, spicy foods or anything that tends to aggravate your stomach.
Move to the center of the ship. Often, the central area of the ship is least affected by the motion of the sea and the waves. Moving toward the center of the ship can reduce seasickness symptoms, according to the Centers for Disease Control and Prevention.
Focus on the horizon or close your eyes. According to the Centers for Disease Control and Prevention, reducing sensory input helps combat seasickness.
Drink caffeinated beverages. Take medication geared towards fighting seasickness. Most antihistamines fight seasickness symptoms. According to the Centers for Disease Control and Prevention, drugs that induce drowsiness tend to be the most effective. Motionsickness.net suggests trying over-the-counter medicines such as Dramanine or Benadryl at least one hour before your trip.
Use holistic approaches such as acupuncture bracelets or magnets. The Center for Disease Control warns that scientific data is lacking for these remedies, but some advocates suggest using holistic methods to reduce nausea.