Make sure you know whether any crewmembers have preexisting medical conditions such as ulcers or diabetes, or require special medications. These people may develop additional problems if they suffer from severe seasickness. Work out a viable plan for treating them. Before departure, review procedures for prevention and treatment with your entire crew. Designation a narrow sea berth aft for use by the afflicted and have a supply of emesis bags, disposable towels, easily opened juice or water bottles and candy available in the bunk.
Bags really are far superior to the traditional bucket.
These are much easier to use in a motion environment even when lying down. Anti-motion sickness drugs are a very effective way of raising your threshold for seasickness and of hastening recovery if you do become sick. As shown in the accompanying table, a wide variety of useful drugs is available. Also, all oral drugs require at least a half-hour, usually more, to become effective. Many people try drugs but give up on them, simply because they failed to take them in time.