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Sea sickness.....

They say the only real cure for sea sickness (Mal de mer) is to sit under an apple tree… on land… that doesn’t move!

Most people who spend time at sea will suffer from sea sickness at some point. Some actually suffer the reverse of ‘land sickness’ too! We all have a story about that one time when…! Humans have fought against sea sickness for all time. Ancient Greeks called it the ‘plague of the sea’ and famous sufferers include Admiral Horatio Nelson and Christopher Columbus. Charles Darwin once wrote ‘The misery I endured from sea sickness is far, far beyond what I ever guessed’ and ‘if it were not for sea sickness, the whole world would be sailors. 

Symptoms include: nausea, vomiting, dehydration, headache, dizziness, muscle spasms, drowsiness, lethargy, excess saliva, sweating and burping.


So what causes this debilitating, incapacitating infliction for which there is no cure?


In simple terms, it’s what happens when your inner ear balance system reacts to the unfamiliar motion of being on water. It’s the same reaction that causes car, or any other kind of motion sickness. The movement of the vessel you’re on causes the fluid in your inner ear to slosh around and this stresses the part of your brain that handles balance. The signals the brain receives are telling it that the things you see, such as walls and furniture should be still. But, on a boat, everything is moving constantly, including you. The air, the sea and everything on the boat is moving. This confuses the brain and nausea sets in. 


Battling through sea sickness can be helped by pharmaceuticals, psychology or nature. For the lucky ones, it will often disappear after a couple of days as your brain adjusts to the ever-moving environment and your ‘sea legs’ develop. 


Our instructor Rachel and her rowing partner Lin, decided not to take any medication for their Atlantic row. Both suffered sea sickness in the first 36 hours with nausea and vomiting. They did find that lying down or rowing were fine, it was just anything in between that caused a problem! But it passed quickly and they were fine for the rest of the voyage. Interestingly, Rachel now suffers from mild land sickness and often feels dizzy and a little nauseous after even a short time on the water. 

In addition to the inner ear, other factors that can contribute to sea sickness include blood flow, heart rhythm, hydration, sinuses and psychological factors such as excitement, nerves and fear. 


Mind over matter can work for some. One sailing instructor is reported to tell students that if they hold a potato in their left hand they won’t get sea sick! Bizarrely it works for most and if you’ve ever had sea sickness, you’ll most likely give anything a try!


Some common triggers for sea sickness include:

  1. Hydration. Avoid alcohol and stay hydrated. Even if you vomit repeatedly, try to drink in between as it can ease the nausea and you will absorb some.
  2. Food. An empty stomach, or eating spicy, fatty or acidic food mean that your stomach is more likely to react badly to any nausea. Vomiting with something in your stomach is much better than vomiting on an empty stomach.
  3. Fear. Even in difficult conditions, try to stay calm. Anticipation of being sick can bring it on and being ill just adds to the problems.
  4. Temperature. Extreme cold or heat can cause nausea. Try to adjust your layers according to the temperature and be ready for temperature changes. 
  5. Fatigue. Make sure you and your crew are well rested before departure. Plan shifts to allow for illness. 



Sea Sickness Remedies

  1. There are many drugs available that can address the issue so it’s best to speak to a Doctor or Pharmacist to find the right one for you. But , it’s worth remembering that many drugs suppress the symptoms of sea sickness, so while they are ideal for a day sail, may not be as effective if you’re at sea for longer as symptoms can still happen if you stop taking them. 
  2. There are also lots of non-medical remedies such as acupressure wrist bands, patches, and sea glasses that might be worth a try.
  3. Avoid dehydration and muscle spasms by staying hydrated before and during your voyage. Avoid alcohol if possible. Have drinks handy at all times including bottles of water in the cockpit.
  4. Eat. Even if you vomit it back up - it’s better to have something in your stomach. Ginger is recommended - ginger biscuits, ginger snaps, ginger tea, raw ginger, ginger sweets or ginger ale. Peppermint can help, or even a small amount of toothpaste on the tongue can ease the nausea. Rachel recommends tinned fruit in syrup on the basis that it goes down (and up!) easily and the glucose in the syrup helps keep energy levels up. Eat things that will taste the same on the way back up and not leave a yukky taste in your mouth, for example, an apple versus tuna or dairy products which could add to the nausea.
  5. Try to avoid strong smells such as diesel, the head, the galley.
  6. If you start to feel nauseous, distract yourself. Take the wheel or carry out a task that requires concentration. Stay on deck in the fresh air if possible, and focusing on the horizon can help your brain to figure it out. Standing or lying are better positions than sitting. 
  7. Lie flat in the centre of the boat where movement is reduced. Avoid the bow. Sleeping on the floor instead of a bunk can reduce motion.
  8. Try to sleep and rest when you can, even if you don’t feel tired. Sleeping onboard the night before departure can help your brain to figure out the motion.
  9. Try the trick with the potato in your left hand! Mind over matter can work and it will give the rest of the crew something to laugh about!
  10. If fear is a factor, try not to let it take over. Trust your skipper and crew, the boat and yourself. Reassure yourself that things can work out well. Research before setting off can help.
  11. Focus on the positives. The things you love about being out at sea and the things that make it enjoyable for you. 
  12. Plan shifts and allow for illness. Think about the skill mix of those onboard and shortening shifts if necessary.
  13. Prepare meals in advance if it’s likely to be rough, so you can grab food on the go and minimise time below deck. 
  14. Challenge yourself with a goal, such as trying to make every watch, to provide a sense of achievement even if you’re feeling rotten.
  15. Use something solid to provide balance, keep your legs shoulder width apart and offset the boat movement with your body - like using a hula hoop.
  16. If you know you’re prone to sea sickness, accept it might happen and focus on the things you know will help and how you’re going to fight through it to calm your nerves and fear. 


Finally, if you are going to be sick, make sure you head to the down wind side!!!


by Rachel Smith 08 May, 2024
At Red Square Medical, we’re keen to support those who have a passion for maritime medicine. While we can’t provide placements for everyone, occasionally a request pops up at just the right time and we can provide some experience and insight into our unique and specialised world. Last year we were contacted by Jordan Lin, a medical student with a love of the ocean. This is his story… When I was a boy, my dad and I used to go fishing with a local fisherman off the Norfolk coast. I absolutely loved being on the sea and so for quite a long time, I wanted to be a fisherman. When I got a bit older I kind of forgot about this and think I may have been slightly put off by watching the TV series ‘World’s Deadliest Catch’! But I have always loved being on the water and spent a lot of time sailing dinghies; I was also a swimming teacher for children back in high school and college. Later, I decided to study medicine and I’m now a final year medical student at the University of Bristol where I completed an intercalated degree; a Masters in Health Sciences Research. I’m now looking forward to starting work as a qualified Doctor in August. Though having spent 6 years training, my next 2 years will be spent working for the required two foundation training years that must be completed before being able to work independently as a Doctor in the UK. At university, I joined the VITA network which is a group dedicated to developing a health and public health approach at the heart of any response to human trafficking and exploitation. I became the blog coordinator for the organisation and you can read the blogs, including those that I have written, here: https://vita-network.com/blog/ In my spare time, I have been involved with the Bristol University Hot Air Ballooning Society and trained through the society to get my Balloon pilots licence. So, I often spend weekends during the summer flying in a leisurely fashion over Bristol and the surrounding area!
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by Rachel Smith 20 Mar, 2024
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by Rachel Smith 21 Feb, 2024
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by Rachel Smith 03 Jan, 2024
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by Rachel Smith 20 Dec, 2023
Christmas is coming and the season of parties is upon us. Of course this means that most of us will overindulge in large amounts of luscious food and, of course, a tipple or two. At Red Square Medical HQ, we have a method of categorising drunk people. During our combined careers, we’ve dealt with more drunks than we can remember; it’s easily running into several hundred. What we’ve learnt, amongst other things, is that most people who are drunk fall into one of these categories. Now please don’t judge as it is purely observation and also makes for an interesting chat when delivering the STCW Medical training, because we all know at least one person from each category and sometimes… a person can be in multiple categories depending on many other factors, or, we might even have been there ourselves! Once we have established these categories there is a serious note to this blog so please do keep reading.
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