What to know for Seasickness, Dehydration, and Medication
Recognise when seasickness stops being an inconvenience and becomes a safety problem.
Seasickness prevention, dehydration risk, regular medication, allergies, and skipper planning. This module is mapped to the published course boundary for First Aid at Sea Revision and written as an independent revision aid, not official training material.
Key Points
- Vomiting can cause dehydration and medication problems
- Crew medical information should be handled sensitively before departure
- Hydration and rest matter
- Severe or persistent symptoms may need advice
Last reviewed: 6 July 2026 by Compass Revision curriculum review
Source notes
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