Short answer: seasickness is common and usually manageable with preparation, simple onboard strategies and early action. Preventing motion-sickness triggers, supporting affected crew quickly and adjusting the passage plan when needed will keep your crew safer and more comfortable.
How seasickness happens (brief)
Seasickness is a form of motion sickness caused by a mismatch between what your eyes see and what your inner ear senses. On a boat this happens when waves, rolls and repeated motion conflict with visual cues. Factors that increase the chance of seasickness include fatigue, poor sleep, recent illness, strong smells, heavy food, alcohol and anxiety.
Before you go: preparation and prevention
- Choose the right trip and timing: plan shorter first outings or sheltered waters for people prone to motion sickness. Avoid heading out late in a blow if you can.
- Rest and hydration: make sure everyone has had a good night's sleep and is hydrated before departure.
- Food and alcohol: eat a light, bland meal before leaving (avoid greasy, spicy or heavy foods) and discourage alcohol before or during rough conditions.
- Medication and medical advice: if someone regularly gets seasick, advise them to speak to a GP or pharmacist before the trip about appropriate medication. Do not invent doses—follow professional advice and product instructions.
- Non-pharmacological aids: consider wrist acupressure bands, ginger sweets or lozenges and acclimatisation trips to build tolerance.
- Brief the crew: explain symptoms to watch for and agree a plan for who will manage an affected person and what actions to take early.
Onboard tactics when seasickness starts
Early action reduces severity. If someone feels unwell, try the following in order:
- Get them to fresh air: move to the foredeck or open stern where they can see the horizon. Fresh air helps reduce nausea.
- Encourage a fixed gaze: ask them to look at the horizon or a distant fixed point rather than down at moving objects.
- Stabilise their body: sitting low facing forward or lying down on their back with minimal head movement can ease symptoms.
- Remove strong smells: stop cooking odours or fuel smells near the person; move them away from the galley and head.
- Offer ginger or acupressure bands: these may help some people; they take time to work so use them early.
- Medication when appropriate: if they have pre-agreed medication prescribed or recommended by a pharmacist/GP, it can be used according to those instructions.
Short-term management and safety considerations
- Keep the boat safe: assign an able-bodied, not-seasick crew member to helm and watch. Reduce sail if necessary, slow down or alter course to smoother seas if safety and navigational constraints allow.
- Hydration and light snacks: small sips of water or a light dry snack can help; avoid heavy meals until symptoms settle.
- Comfort and morale: reassure the affected crew—anxiety and embarrassment make symptoms worse. Provide a quiet, shaded place to rest.
- Monitor for dehydration or worsening symptoms: persistent vomiting, dizziness, confusion or inability to function require medical assessment; consider returning to sheltered water or calling for assistance if safety is compromised.
Common mistakes to avoid
- Waiting too long to act—early measures are more effective than late attempts after severe vomiting begins.
- Moving a sick person below without improving ventilation—stale air can worsen nausea.
- Assuming one remedy works for everyone—people respond differently to drugs, ginger and acupressure.
- Letting inexperienced or unwell people helm—always have a competent person at the wheel if conditions require it.
Examples and simple scenarios
Scenario 1: Day sail, light chop. A crew member feels queasy after lunch. Move them to the bow, have them face the horizon, give ginger lozenges and encourage small sips of water. Keep them on deck for as long as possible.
Scenario 2: Coastal passage, building swell. Multiple crew report nausea. Reduce sail and head to a course with less beam seas, assign a steady helm, rotate duties so those affected rest, and consider diverting to the nearest safe harbour if symptoms are severe and affecting safety.
Limitations and when to seek medical help
Most seasickness resolves with rest and time. However, seek professional medical advice if:
- Symptoms are severe or prolonged despite basic measures.
- There are signs of dehydration, extreme confusion or fainting.
- The person has other medical conditions or is on medication where interactions are a concern.
Skipper and crew responsibilities
- Skipper: plan trips with crew susceptibility in mind, maintain safety, and make conservative decisions about route and speed when crew welfare is at risk.
- Crew: be honest about susceptibility, follow pre-trip guidance on rest and food, carry any personal remedies and report symptoms early.
Practical checklist before cast-off
- Have a pre-departure briefing about seasickness and who is prone to it.
- Check spare ginger, water and light snacks are accessible.
- Agree where a sick person will rest and who will helm/watch.
- Confirm any medications or medical advice for susceptible crew are on board and accessible.
- Plan an escape option or shorter passage if conditions deteriorate.
Next steps
Before your next trip, discuss susceptibility with your crew, pack simple non-prescription aids like ginger and acupressure bands, and encourage anyone with frequent severe motion sickness to seek medical advice about options. On the water, prioritise early, calm action and keep safety decisions conservative if multiple crew are affected.