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MSN 1905 - 1 year on - Equipment!

Last week, we took a look at the ‘new’ drugs listed on the M1905 in March 2021. Shipping companies were given until March 2022 to update their medical kits onboard, so this week, we’re taking a look at the equipment introduced 12 months ago, as a quick reminder of what the equipment is, and when and how it’s used. 

As with anything, skill fade is a very real risk and we know that if you’re not using kit and equipment regularly, it’s easy to forget. Plus if you’re yet to complete a refresher, you might not be familiar with the updated equipment. Hopefully, this quick guide will help.

We’ve also listed the pages in your Ship Captain’s Medical Guide where you can find out more…

Pulse Oximiter (p202, listed in the index under airways)


A pulse oximeter is that handy little gadget that pops on to a patient's finger (or toe, or earlobe) and tells what the oxygen level or oxygen saturation (sats) are in the body. It’s non-invasive and can detect even small changes. 


It’s part of your examination and monitoring equipment and works by shining an infrared light through the finger to show how effectively blood is carrying oxygen to the extremities as well as giving you a pulse rate. If enough oxygen is getting to the fingers and toes, then the patient should have enough making its way to the brain and organs too, but if not, it provides a guide for oxygen therapy along with your shoreside medical support. 


For someone who is healthy, oxygen saturation should read around 92-98%. Don’t worry if it’s 99-100% though. Some people with lung (such as COPD) and heart conditions may have normal oxygen levels of 88-92%. They're unlikely to be working as crew on a ship, but could very easily be passengers. 


Of course a pulse oximeter does have limitations and you need to check the batteries regularly. It may not work effectively on cold peripheries or in the case of carbon monoxide poisoning, can pick up an inaccurate pulse in patients with atrial fibrillation (AF), can be affected by light and low blood pressure. It may not work on patients with painted or false finger nails but that’s easily resolved by turning it 90 degrees round the finger, or using a toe or earlobe. 

Blood Glucometer (p37)


A blood glucometer is used for testing the level of glucose (sugar) in the blood and is part of your examination and monitoring equipment.


It is invasive as it requires a small pin prick to break the skin, so there is a minor risk of infection. But, they are incredibly easy to use and can be invaluable in helping to work out what’s happening and whether it can be easily fixed, or required other intervention.


To test the blood glucose (sugar), first assemble the kit - the glucometer, testing strips, lancets and make sure you dispose of the sharp correctly afterwards.


Clean the finger and use the lancet to create a drop of blood. A tip from our tame Paramedic is to prick the side of the finger tip, slightly off centre, where it’s not quite so sensitive. Your patient will be grateful! 


Squeeze the finger until there is a drop of blood and then dip the testing strip into the blood. You’ll have to wait a few seconds for the result to display on the meter. 


Normal blood sugar readings will be between 4-6 mmol/l. If it drops below 4 or above 20, urgent treatment may be required under the guidance of your shoreside medical support. Taking a blood sugar reading is also a good way to rule out a potential cause of symptoms such as reduced consciousness, stroke symptoms, new confusion and diarrhoea/vomiting. 

Naso-pharangeal Airway - NPA (p200)


NPAs are an optional part of your resuscitation kit and both the 6mm and 7mm diameter NPAs are recommended. It’s simply a small tube with a wider section at one end, the flange. It can be used alone or with an oro-pharangeal airway and can be really useful if the casualty is suffering from ‘trismus’, where the teeth clench and it’s impossible to use an oro-pharangeal airway.


The right length/size is measured by holding one end at the side of the nostril; the other end should reach the ear lobe. Interestingly, the right nostril is normally slightly bigger than the left so most medics start there but either side will do just fine.


Lubricate the outside of the tube and insert it straight towards the back of the head, at a right angle to the face, not up towards the brain. Once inserted the flange will lie against the nostril.


The only caution is on the extremely rare occasion that a basal skull fracture is identified (by a wound, bruising around the eyes, bruising behind the ears, clear fluid coming from the nose), an NPA should not be used. 

Intravenous Access (p224-225 and p227)


Giving fluid and/or drugs through an intravenous (IV) route using a cannula is potentially a lifesaving technique, but must only be undertaken by trained personnel under shoreside medical team guidance. 


IV access means that the drugs or fluid can be introduced directly into the circulatory system and can work much more quickly and more effectively than oral medications. But, while inserting a cannula into a vein isn’t complicated, it needs training and regular practice to avoid skill fade. 


The cannula is a needle inside a fine plastic tube. The needle pierces the vein and the plastic tube advanced (or slid) over the needle to sit inside the vein. Then the needle is removed and disposed of and the cannula secured in place. 


Cannulas can be inserted into the back of the hand, the wrist or the inside of the elbow. This is an invasive procedure and comes with risks of infection and embolism from air or blood clots.

Intraosseous Access (p226-227)


As with the IV route, giving fluid and/or drugs through an intraosseous (IO) route is potentially a lifesaving technique, but must only be undertaken by trained personnel under shoreside medical team guidance. 


IO access sounds a bit gruesome as you are effectively drilling directly into someone’s bones to get to the marrow. But it is a fabulous way to get drugs or fluid into the circulatory system if you can’t gain IV access for some reason. 


It can work much more quickly and more effectively than oral medications and there are both manual and specialist options for firing or drilling the needle through the bone, normally in a site on the tibia that’s quite easy to locate.


IO is very similar to a cannula where a needle is used to introduce a plastic tube into the bone marrow.  The drill pierces the bone and is then removed, leaving the cannula tube in place to be secured. 


We also have it on good authority that practicing on a raw egg is ideal (as long as you don’t press too hard). It gives a really good ‘feel’ of pressing the needle against the bone, then the ‘give’ as it drills through into the marrow.


Of course there is a risk of infection and IO and while you can use IO on a conscious patient, it can be very painful, so steps would need to be taken to manage any pain. 


If you’re not of a sensitive nature, you may like to watch this US Marines film of an IO insertion but we warned… it’s not for the faint hearted! We recommend withdrawing a little of the marrow before flushing as it can reduce the pain dramatically be creating a space within the marrow first. https://www.youtube.com/watch?v=MgQJIsavbjI

Naso-gastric Tube (p13, 38, 65, 70, 148, 216, 220)


A naso-gastric tube is another advanced technique that should only be carried out under guidance from your shoreside medical team. 


It’s used to introduce fluid or food, or allow gas to escape from the stomach and can be used if your patient suffers from persistent vomiting, needs hydration and feeding but can’t swallow, has a distended or rigid abdomen or if they are unconscious - to deflate the stomach and reduce the risk of vomiting and aspiration (vomit getting into the lungs). But inserting and NG tube comes with a reasonable risk of the tube accidentally passing into the lungs instead of the stomach. This could have catastrophic results if not identified. 


The good news is that there are plenty of ways to check that the tube is in the right place (p216) and your shoreside medical team would be able to help you make totally sure it’s in the right place. 

We hope you’ve found our M1905 refreshers useful, and if you’d like any further information about the updates please get in touch.



Note: For the purpose of this blog, all measurements and techniques are in line with the 23rd Edition of the Ship Captain’s Medical Guide, but may vary slightly in other publications.

James Griffiths - Guest Blog

by Rachel Smith • 6 November 2024
Welcome to our latest guest blog where we’ve been chatting to James Griffiths, General Manager of Ocean Operations for Scenic Group and finding out more about what happens behind the scenes in order to keep a fleet of luxury expedition ships running. Here’s what James told us… As General Manager of Ocean Operations, I’m responsible for the operations of our fleet which includes four ships in service with around 850 colleagues. I currently live in Mumbles, near Swansea in the UK, but due to the nature of my work I spend a significant amount of time living in Croatia. Prior to this role, I spent many years working at sea and worked up through the ranks to Captain and over the last 15 years, my main focus has been on polar expedition travel. I hold a master mariner certificate of competency in addition to a degree in engineering and a post graduate diploma in law. Part of my job is to work with our medical service provider (Red Square Medical) to ensure that our ships are offering medical services that are appropriate for their deployment, and this can often be to some of the most extreme and remote locations around the world. It’s extremely varied, though during the COVID-19 pandemic, I came ashore when our operations paused for a significant period of time. I was fortunate enough to be given the opportunity to lead the restart of our Ocean Operations, which included setting up everything from a company to manage the ships, to selecting our crewing, medical, helicopter and submarine partners and providers, amongst many other things. Our areas of operation, and the nature of our cruises (expedition), plus having aircraft and submersibles onboard some, do mean additional elements involved in the management of these ships. You could say that this current position is more of a happy coincidence than one that I actually planned for! In some ways this is a great positive - I do think it’s possible to plan a little too much and then be disappointed if things don’t go quite the way you had imagined. But there’s no danger of that here!

Paramedic on tour - Simon Lawton heads to Mexico

by Rachel Smith • 3 October 2024
Back in February 2022, we brought you one of our very first guest blogs from Simon Lawton, a Paramedic who has swapped out his ambulance for a Superyacht! You can read the original blog here: https://www.redsquaremedical.com/superyacht-paramedic-a-guest-blog-from-simon-lawton Over the last 2+ years, we’ve followed Simon’s career, and some of you may even recognise him as he does put a Red Square Medical instructor hat on from time to time. But, as for all healthcare professionals, Simon has to keep his skills up to date. So, we asked him to tell us a bit more about how he juggles this along with a rota onboard. Here’s what he told us… I’m originally from Stoke-on-Trent in the UK and trained as a HCPC registered Paramedic. I’ve spent almost 5 years working at sea now, with almost continuous employment on three different vessels, after leaving the ambulance service in 2019. My first role was as a Paramedic/Deck hand on Superyachts, and I now work as a Medical Officer on a maritime vessel. Even before I applied to become a Paramedic, I intended to complete my studies to help find employment in a remote or offshore environment. I had always been attracted to the idea of being able to travel the world while earning a salary. Working at sea has meant that I have travelled extensively, earnt a higher salary, and have a better work/rest balance than would be possible in a role on land. Note: At the time of writing, a qualified Paramedic’s starting pay in the UK was £28,407 and Simon’s old rota was 2 days, 2 nights (all 12 hours) and 4 days off with very inflexible annual leave. This year I decided to carry out some continual professional development (CPD) at a hospital in Mexico, to keep my skills up to date. I was interested in travelling to find out more about how healthcare services are provided outside the UK and Europe. The CPD activity in Mexico allowed me to do exactly that, while caring for and treating a wide variety of patients who had either self-presented in the emergency department, or been conveyed to hospital by ambulance.

Inequalities in CPR on Women

by Rachel Smith • 25 September 2024
Welcome to our September blog, and as we all start (in the UK at least!) to think about adding a few layers for warmth, we’d like to talk about getting naked! Well, to be more specific, getting bra’s off. Fact: Women are dying because bystanders are less likely to carry out CPR on women than men. Research shows that women are 27% less likely to receive CPR than men and if a defibrillator is used, their chance of survival is affected by bra’s being left on. Most of us have never had the chance to train using a female manikin. The #BraOffDefibOn campaign aims to address the inequality in CPR for women and we’re supporting it.

Dr. Will Duffin - Joint Medical Director WEM

by Rachel Smith • 4 September 2024
In August, we brought you a Guest Blog from Mark Hannaford, the founder of World Extreme Medicine. This month, it’s the turn of another of the key WEM faculty members… introducing Dr Will Duffin. Hello everyone, I’m Dr Will Duffin and I’m a GP in Devon in the UK. I’m the Joint Medical Director of World Extreme Medicine (WEM) and the Lead Medic for the US CBS TV show ‘Survivor’ - for Seasons 43, 44, 46 and 48, which is also through WEM. Extreme Medicine is healthcare that is delivered across the full spectrum of remote, austere and challenging environments. This includes high mountains, deep oceans, jungles, deserts, polar, low earth orbit and refugee camps… the list is endless. Being a part of the wider Extreme Medicine community through WEM has been a portal into new worlds of possibility and opportunity in my medical career as an NHS GP. It’s a huge privilege to treat patients in a remote setting. You get to do proper ‘hands on’ medicine that truly tests your clinical skills, risk management and decision making. Even basic techniques and principles done well can transform patient outcomes. That’s the big reward. I graduated from Bristol Medical School in 2008 and completed my GP Training in Cornwall, UK in 2016. In between, I spent 18 months in Australia to gain as much emergency department experience as I could, whilst doing Wilderness Medicine Courses. I landed my first expedition gig 12 years ago when I was post-FY2 (Foundation Years follow on after qualifying as a doctor). I covered a Kilimanjaro Trek after another doctor dropped out at the last minute. Once I had this under my belt, I was able to leverage this experience to get the next trip. So, I soon found myself providing regular medical cover for various commercial and charity sector expeditions. These expeditions have taken me all over the world: Kilimanjaro, the Peruvian Andes, the Himalayas, Northern China, Eastern Europe, Myanmar and Madagascar. One highlight was working as the private doctor for a Luxury Trans-Siberian Train! Though I became frustrated having to constantly wrangle annual leave to go away, so I made the switch to being a freelance (locum) GP, which has given me the flexibility I need. I joined WEM in 2018 after responding to a Facebook Ad for the ‘Survivor’ job. I was invited to a selection weekend in the Peak District, which is when I first met Mark Hannaford WEM founder and CEO and Dr Joe Rowles, WEM’s other Medical Director, and it all went on from there. Early on, I was given the opportunity to lead on the content for the annual World Extreme Medicine Conference and our various podcasts and webinars. Through doing this, I have met a colourful cast of characters; other extreme medics who are as audacious as they are inspirational! We have a lot of fun at the conference every year, learning from one another. https://worldextrememedicine.com/registration/wem-conference-2024 (Note from the RSM team – the conference is highly recommended and well worth a visit!)

Mark Hannaford - Founder and CEO of World Extreme Medicine

by Rachel Smith • 5 August 2024
Last year, the Red Square Medical team descended on the World Extreme Medicine (WEM) conference for the very first time. We’d been aware of this unique organisation for many years, but just not had the chance to get involved. Liz was involved in a panel discussion and spoke at the conference, and we came away literally buzzing with enthusiasm - our first impressions were that WEM is a place with no ego’s, where everyone wants to learn, and is willing to share. We met some of the most fascinating people ever and can’t wait to go back this year. But what about the person who started it all… We spoke to Mark Hannaford, founder of World Extreme Medicine and its far reaching impact. Here’s what he had to say. I’ve been involved in expeditions, working in low resource environments and extreme medicine for the past three decades! My family was made up of generations of seafarers from Cornwall although I was brought up variously in Devon, Antigua in the Caribbean and the Middle East; reflecting my father’s job as a Master Mariner. My father was at one time the youngest captain aboard the UK’s largest registered vessel, and my grandfather was Harbour Master for Malta and the first in that role in Plymouth at the start of Queen Elizabeth’s reign. I wear a number of hats but primarily I am the founder and CEO of World Extreme Medicine, and the annual WEM Conference. I also founded the MSc in Extreme Medicine at the University of Exeter and Graduate Certificate program at Bouvré College of Health Sciences, Northeastern University, Boston.

Women's Health

by Rachel Smith • 3 July 2024
Women’s health is a huge topic, while it’s true that in the maritime sector women make up just 2% of seafarers at sea, up to 34% of the shore based staff are female. Looking at the bigger picture, women’s health directly affects just under half of our population globally, and indirectly (whether you like it or not!) the other half, we thought it was worth a blog about some of the issues, and the taboo’s, that could be affecting our maritime workforce and the women in our lives. It's common knowledge that women experience huge hormonal changes at puberty and menopause, both of which can have significant physical and mental health impacts. In the UK, there is a growing discussion and openness about peri-menopause (the years before periods stop altogether) and how for some women, this has devastating effects across all aspects of their lives, including work. Of course men experience changes at puberty, but their later life changes are less significant and generally don’t affect their ability to work. In December 2023 the World Health Organisation (WHO) issued a statement to advise that every year, at least 40 million women are likely to experience a long term health problem caused by childbirth. So there’s a good chance that we all know one or more women affected, or if you are female… this could be you. As part of a special series on maternal health, the study showed a high burden of postnatal conditions that persist in the months and years after giving birth. These issues include more than a third of women experiencing pain during intercourse, urinary incontinence (8-31%), anal incontinence (19%), anxiety (9-24%), depression (11-17%), perineal pain (11%), a fear of childbirth (6-15%) and secondary infertility (11%). All in all it doesn’t paint a great picture of life after childbirth for some women. If any of your workers experience these issues, either on or off shore, it could have a significant impact on areas of their working life and it’s something they may be reluctant to open up about. Even before childbirth, we may take it for granted that contraception is available, certainly in the developed world. But in developing countries where sexual violence is not uncommon, contraception is considered lifesaving due to the high level of unsafe abortions carried out. Around 13 million women (and girls) under 20 give birth annually and complications in the pregnancy and birth is a leading cause of death. Consequently abortion is an option, but this carries its own huge risks.

Guest Blog - Wendy Sullivan

by Rachel Smith • 25 June 2024
We just love speaking to and finding out more about the people who inspire us and we guarantee that this month’s blog will not disappoint! We first got in touch with Wendy Sullivan via LinkedIn and thought she seemed like a pretty awesome human. Wendy and her company, Maritime Medical Solutions in Australia, certainly share the same outlook as Red Square Medical. Fast forward a couple of years and we’re now collaborating on a project in Australia and the Pacific Islands. What we’ve learnt along the way is simply fascinating and Wendy has kindly agreed to share her story with us… Here is Wendy’s Guest Blog: I was born in Canada, grew up in Africa and now call Australia my home. I feel lucky to live in paradise where the weather allows us to be on the water year-round. I had to work hard to gain my Australian citizenship and I credit my work in the marine industry with giving me a pathway to stay in Australia permanently. It took years of hard work and uncertainty to gain my residency and is still one of the achievements I am most proud of. I started sailing in Canada and since emigrating to Australia gained my professional and commercial qualifications as a vessel master, marine engine driver, trainer and assessor. I also have a Diploma of Paramedical Science, ship masters medical qualifications, business administration and development and there is still so much more to come.

Safety of Lives at Sea

by Rachel Smith • 17 June 2024
Working at sea can be one of the most rewarding and fulfilling careers. But you can’t gloss over the fact that it can be dangerous. Whether you’re working on a tanker, ploughing up and down the oceans, a Superyacht enjoying a busy season of charters, or any vessel in between; our love/hate relationship buddy Neptune takes no prisoners! The Safety of Lives at Sea (SOLAS) Convention in its successive forms is generally regarded as the most important of all international treaties concerning the safety of merchant and other vessels. The first version was adopted in 1914, in response to the Titanic disaster, and went through several iterations up to 1974. The Convention in force today is generally referred to as SOLAS 1974, as amended. SOLAS regulations cover all areas of safety at sea, including construction, fire prevention and detection, life saving equipment, cargo carriage, navigation, communications and a host of other areas. Regulation 33 of the SOLAS Convention applies to all ships, and places an obligation on Masters to respond to distress calls at sea and proceed ‘with all speed’ to their assistance. Anyone working in the maritime sector, hopes that they are never on the receiving end of this regulation, but we’ve experienced two quite different instances, where the ships we work with have responded and our Medical teams have played an important part in rendering aid.

Telemedicine - access to a healthcare professional

by Rachel Smith • 29 May 2024
This week’s blog is an introduction to telemedicine as although it’s probably been around for longer than you think, you might not be familiar with what’s available to help you. So whether you’re a leisure sailor taking on the ARC; work in commercial shipping, spend your time on a Superyacht, or anything in between, read on for more information… According to the UKs National Institute for Clinical Excellence, (NICE: https://www.nice.org.uk/), ships being on the water for months at a time mean that health can be a life-threatening challenge for sailors and seafarers. Access to healthcare providers has always been one of the most critical issues for offshore crews and it’s worth remembering that the International Labour Organization (ILO), dictates that access to medical treatments and health services should be guaranteed to seafarers in the same way as for people working ashore. Nowadays, telemedicine technology has emerged to improve healthcare delivery in many remote areas where there is no direct access to healthcare services using telecommunication services. Among them, maritime Telemedical Assistance Services (TMAS) have become more readily available and are now considered an integral part of a shipowner's emergency response operations. The advent and uptake of Starlink in both the commercial and leisure sectors can only be a positive from a medical perspective. So, what is Telemedicine? What does it do and how does it work? Telemedicine is a term that’s becoming more and more common in the maritime world. Quite simply, it is the provision of remote clinical services, via real-time two-way communication between the onboard medic (trained crew or healthcare professionals) and/or the patient themselves, and a shore-based healthcare professional, using electronic audio and visual means. The modern history of Telemedicine can be traced back as far as 1905, when a Dutch physician used long distance transfer of ECGs (electrocardiograms) to be read remotely. But as early as the 1920s onwards, radio communications were being used to pass medical information to patients at sea on ships and on remote islands. More recently, the COVID-19 pandemic has brought Telemedicine to the forefront of healthcare. Though we may not easily recognise what it actually is, the majority of GPs (certainly in the UK) and other allied healthcare professionals in the non-acute world, such as Physiotherapists and Mental Health support, have relied heavily on telephone and video consultations since March 2020. A survey conducted by Nautilus International and Martek Marine (2017) showed that a staggering 98% of seafarers believed that greater access to Telemedicine support would save lives at sea. Of those questioned, 68% had been on a vessel that was forced to divert due to a medical emergency and 70% had been on a vessel where there had been a medical evacuation. Emergencies experienced at sea ranged from severed limbs and broken bones, to gunshot wounds, tropical diseases, allergic reactions and sudden cardiac arrest. Whether you’re a commercial seafarer or leisure sailor, it would improve confidence in making a decision on whether an injury, or illness was severe enough to warrant a diversion, or evacuation, if there was a trained medic on the end of the phone or radio. Ever improving communications also means that we can now go far beyond voice calls. Photos of injuries, files of test results and even live streaming is all possible and helps to provide a much more indepth service. Our own team member, Rachel, received Telemedicine support via SatPhone and email, on a 7 metre Ocean Rowing Boat (yes, you did read that right!) in the middle of the Atlantic, when her rowing partner developed a painful injury. Remote intervention from a Doctor onshore helped to maximise use of the medical kit contents for the short and long term, rule out immediate worries of infection, and develop a pain management plan for the rest of the rowing race. One in five commercial ships a year are forced to divert for a medical emergency, with unknown numbers of other, non-commercial vessels on top. So there is also consideration for the cost and time involved, plus the stress to both the patient, and their medic who is managing a situation onboard, possibly alone!

Guest blog: Jordan Lin

by Rachel Smith • 8 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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