Most seasickness on a yacht can be managed with a few decisions made before you leave the dock: sleep well, eat light, take any medicine early, and spend the day on deck near the middle of the boat with your eyes on the horizon. If you do start to feel unwell, fresh air, a fixed view of the horizon and a word to the skipper early on make the biggest difference. Below is what causes it, how to prevent it, how medicine timing works for South African travellers, and how to plan a Cape Town charter around comfort.
TL;DR
- Seasickness is a sensory mismatch between your inner ear and your eyes, and it usually fades as your body adapts, often within 12 to 24 hours at sea.
- Stay on deck, stay near the centre of the boat, watch the horizon, and avoid reading or looking at your phone.
- Eat light and avoid alcohol before and during the trip. Medicine works best when it is taken before you feel anything.
- Read the leaflet of any motion-sickness tablet you use and ask a pharmacist if you take other medication or have a medical condition.
- Tell the crew early. A small change of position or course can ease symptoms quickly.
Table of Contents
- Why some people get seasick and others do not
- How to prevent seasickness before you board
- Medicine for seasickness in South Africa
- Where to sit, stand and sleep on a yacht
- If seasickness starts on the water
- Choosing a yacht and a route that suit sensitive guests
- Perspective: how we plan a charter around comfort
- Arrange a comfortable day on the water with us
- Frequently asked questions
- Sources
Why some people get seasick and others do not
Seasickness is motion sickness that happens on the water. The usual explanation is sensory conflict: your inner ear senses the boat rolling and pitching, while your eyes, looking at the cabin or a screen, report that everything is still. NOAA describes this brain conflict as the cause, and a review of the neurophysiology of motion sickness calls it the most widely accepted scientific explanation.
Why one guest is fine and the next is grey in the face is less clear. Susceptibility varies widely from person to person. NOAA notes that people who get sick in cars or aircraft are more likely to feel it on a boat, so your history on road trips is a fair clue.
The symptoms can build. A peer-reviewed study of naval personnel describes seasickness as caused mainly by a vessel's roll and pitch, with symptoms that can progress from sweating and extra saliva to nausea, vomiting and being unable to function. That progression is the reason to act at the first hint of queasiness rather than waiting.
The encouraging part is adaptation. For most people, symptoms ease as the body gets used to the movement, often within the first day or so at sea. On a half-day or sunset cruise you may not need to wait for that, because the steps below can keep you comfortable from the start.
How to prevent seasickness before you board
Preparation does most of the work. None of this is complicated, but it is easy to skip when you are excited about the day.
Sleep and eat sensibly
Arrive rested. Tiredness makes motion sickness more likely, which is why a late night before an early departure is a poor trade.
Eat light. South Africa's Mediclinic advises light meals, mainly carbohydrate, and avoiding spicy or greasy food and alcohol while travelling and for 24 hours beforehand. In practice that means toast, rice, crackers or a plain sandwich rather than a fry-up or a heavy curry the night before. Do not go out empty either: a small meal an hour or two before boarding gives your stomach something easy to work on.
Skip the alcohol until you are back on shore
The CDC's travel medicine guidance lists avoiding alcohol and smoking among the measures that help. A glass of Cape Winelands bubbly on deck is part of the charter experience for many guests, so a sensible plan is to wait until you are settled and feeling steady, and to keep the first hours alcohol-free if you are prone to motion sickness.
Pack for comfort
Have everything ready before you leave so you are not rummaging below deck once under way. Water, a light snack, sunglasses, a layer for the wind off the water and any medicine you plan to use should all be within reach. Our guide to what to wear on a yacht charter in Cape Town covers footwear and layers, which also affect how steady and comfortable you feel.
Think about habituation
The CDC describes habituation, meaning gradual exposure to motion, as the most effective long-term countermeasure. If you have a multi-day trip planned and you are worried, a shorter outing first is a gentle way to get your sea legs.
Medicine for seasickness in South Africa
The most common question after "how do I prevent it" is which tablet to take. We are a concierge service, not a medical one, so use this section as a guide to what the official leaflets say and take your questions to a pharmacist or doctor. That is especially important if you are pregnant, take other medication, have a chronic condition, or are giving anything to a child.
Timing matters more than the brand
The CDC notes that medication works best before exposure. One charter broker explains the reason: during motion sickness the stomach slows down, so tablets taken once nausea has started may not do much. Take it before you board, not after you feel ill.
What the South African leaflets say
The table summarises the published South African patient information for two well-known options. Always read the full leaflet in your box, as it is the authority on dosage, side effects and who should not take it.
| Medicine | Active ingredient | Timing in the leaflet | Points to know |
|---|---|---|---|
| Stugeron | Cinnarizine | Adults: 25 mg two hours before travel, then 12.5 to 25 mg every eight hours if needed | Drowsiness is a frequent side effect. Not for people with Parkinson's disease or hypersensitivity to cinnarizine |
| Medazine S | Cyclizine (syrup) | About 30 minutes before the journey | Indicated for preventing and treating nausea and vomiting, particularly motion sickness |
| Medazine tablets | Cyclizine hydrochloride, 50 mg | One tablet one to two hours before departure | Indicated for nausea and vomiting including motion sickness |
You may see different timing advice elsewhere. The South African Yachting Association's guest guide, for instance, lists Stugeron 15 among seasickness options and suggests it is normally best taken 6 to 8 hours before going underway. Where advice differs, follow the leaflet in your packet or what your pharmacist tells you for your situation.
Because sleepiness is a known side effect, plan accordingly: do not drive after taking a tablet that makes you drowsy, and be careful on a moving deck. If vomiting is persistent or you cannot keep fluids down, that is a reason to seek medical help rather than to take more tablets.
Where to sit, stand and sleep on a yacht
Position changes how much motion you feel, and it costs nothing.
On deck by day
The consistent advice is to stay topside in fresh air, stay near the centre of the boat, and keep your gaze on the horizon. Discover Boating recommends exactly this, because movement is smallest amidships. Looking at a fixed point gives your eyes the same information your inner ear is getting, which reduces the mismatch.
The flip side is close visual work. The Cruising Club of America warns that reading, scrolling or looking below deck increases the sensory mismatch. Put the phone away, and save the book for the sundowner back at anchor.
Diving medicine guidance from DAN adds another practical point: avoid exhaust fumes as well as reading. Sit upwind of the engine and generator when you can.
Where to sleep on an overnight charter
If your trip includes a night aboard, Practical Sailor suggests a secure berth aft of the mast, low in the hull and preferably on the leeward side, because pitching and rolling are less noticeable there. Forward cabins are usually livelier. When you board, it is reasonable to ask the crew which cabin moves least.
Do ear plugs help?
Not as a seasickness remedy. DAN discusses earplugs mainly as devices for blocking water during diving, and its seasickness advice focuses on the horizon, fresh air and avoiding fumes rather than earplugs. Since the cause is a sensory conflict rather than noise in the ear canal, position and horizon are better bets. Earplugs can help you sleep through noise in a berth, but anyone on watch needs to stay able to hear.
If seasickness starts on the water
Act early, and in this order:
- Go up into the fresh air. Leave the cabin and galley straight away.
- Fix your eyes on the horizon. Stand or sit near the middle of the boat.
- Put away screens and books.
- Sip water and nibble something plain if you can.
- Tell the skipper or crew. SYSA's guidance for hosts suggests sitting amidships and watching the horizon, and a good crew will do more: move you to a calmer spot, adjust speed, or alter course slightly.
That last point is real. Motion-sickness severity can vary with onboard location, vessel type and weather, and changing position or slightly altering course may ease symptoms. A discreet word to the crew costs you nothing and keeps the day enjoyable for everyone. Our yacht charter etiquette guide explains how to work with a crew in general.
If you want a second checklist to share with your group, this set of onboard seasickness prevention tips covers practical preparation for guests.
Choosing a yacht and a route that suit sensitive guests
Seasickness is not only about the person. The vessel, the sea state and the plan all matter.
- Time of day. Cape Town's coast is known for wind, so a morning departure often gives calmer conditions than late afternoon. Your skipper's local knowledge counts for more than any rule of thumb here.
- Route. A sheltered sail with time at anchor gives guests a chance to settle, compared with a long open-water stretch.
- Length of outing. A first-timer who is nervous does well with a shorter outing. Our guide to Cape Town boat trips from 30 minutes to half a day lays out the options and the safety checks worth knowing about.
- Group makeup. Children, older guests and anyone who gets carsick deserve extra planning: a snack, a seat in the best spot and a relaxed schedule.
- Flexibility. The best plan has a backup. If conditions turn out livelier than expected, a good itinerary lets the group head for calmer water or return early without fuss.
Perspective: how we plan a charter around comfort
In our experience, guests who enjoy a yacht day most are the ones who thought about comfort before the day, not during it. We pass on the practical points in this guide when we arrange a charter: a light breakfast, a seat near the middle of the boat, a clear conversation with the crew about anyone who is nervous, and a plan that can change if conditions do.
That is where a concierge helps. Our approach is built on discreet, fast responses and a network of luxury partners, so a request such as "my mother gets seasick, what can we do?" turns into a considered itinerary rather than a worry. We talk through timing, the type of outing and what the group wants from the day, and we pass those preferences to the crew in advance so no one has to explain themselves on the water.
We would rather you arrive relaxed and spend the day looking at the coastline than gripping the rail. Tell us who is coming and what concerns you, and we will shape the day around them.
Jordan
Arrange a comfortable day on the water with us
If you are planning a day out on the water from Cape Town, we arrange yacht charters in Cape Town as part of our wider concierge service, alongside private transfers, dining and villa services. Tell us about your group, including anyone prone to seasickness, and we will build the outing around it.
If you would like us to take care of the details, from a smooth transfer to the marina to a private chef waiting at your villa afterwards, you can request a concierge and we will come back to you with a plan.
Frequently asked questions
How do I stop getting seasick on a yacht?
Prepare before you board: sleep well, eat a light meal and skip alcohol. On the water, stay on deck near the centre of the boat and keep your eyes on the horizon. Avoid reading and screens, and take any medicine you have chosen before symptoms begin, following its leaflet.
What is the best medicine for seasickness in South Africa?
There is no single best option, because suitability depends on your health, age and other medication. Stugeron (cinnarizine) and Medazine (cyclizine) are two products with South African leaflets, and each has its own timing and warnings. A pharmacist can recommend the right one for you and tell you when to take it.
Will I feel seasick the whole trip?
Usually not. The body tends to adapt to the motion, and symptoms often ease within the first day or so at sea. On a short outing, preparation and good positioning on deck are usually what keep you comfortable.
Do ear plugs stop seasickness?
There is no good evidence that they do. Seasickness comes from conflicting signals between the inner ear and the eyes, so a visible horizon, fresh air and a position near the middle of the boat are more useful. Earplugs may help you sleep, but not on a night watch.
Sources
- NOAA: What causes seasickness?
- The Neurophysiology and Treatment of Motion Sickness
- Assessment of Sea Sickness in Naval Personnel
- CDC Yellow Book: Motion Sickness
- Mediclinic: Motion sickness
- Vital Charters: Yacht Charter Seasickness
- SAHPRA: Stugeron patient information leaflet
- SAHPRA: Medazine S
- SAHPRA: Medazine tablets
- SYSA: How to help your guests when they are seasick
- Discover Boating: How to Prevent Seasickness on a Boat
- Cruising Club of America: Seasickness, Prepare for It, Treat It
- DAN Dive Medical Reference: Ears and Diving
- Practical Sailor: Seaberths Examined
- The Conversation: Seasickness monitoring on a South African research ship
- Seasickness prevention tips for yacht charters