If you want to work on a yacht, the ENG1 medical is not optional. It is the single piece of paper that says a doctor has checked you over and cleared you to live and work at sea. No captain will sign you on without it, no matter how good your CV looks or how well the interview went. A green light on your ENG1 is often the difference between joining a boat next week and watching the season pass you by on the dock.
This guide explains exactly what the ENG1 is, why it exists, what the doctor checks, what it costs in different parts of the world, and how it compares to the ML5 and other flag-state equivalents. It also covers the honest stuff nobody tells you at dockwalking sessions: the reasons people fail, the restrictions you can pick up, and what you can actually do about a colour vision problem or high blood pressure before it costs you a job. By the end you will know how to book the right doctor, walk in prepared, and walk out with a certificate that lets you get hired.
Once your medical and your other documents are sorted, the next job is finding the boat. That part is free on Yacht Service Network. You can create a free crew profile in a couple of minutes and start getting in front of captains who are hiring right now.
The ENG1 is a seafarer medical fitness certificate issued in the United Kingdom by a doctor approved by the Maritime and Coastguard Agency, usually shortened to the MCA. The name comes from the form number on the old paperwork, and the industry has used ENG1 as shorthand for the whole examination ever since. When a captain or a crew agent asks whether you have your ENG1, they are asking whether a maritime doctor has certified that you are medically fit to work on a ship.
The purpose is simple and serious. A yacht at sea can be days from a hospital. If a crew member has a medical emergency in the middle of the Atlantic or halfway across the Pacific, there may be no way to get them to proper care quickly. The medical exists to reduce the chance that someone joins a boat with a condition that could turn into a crisis offshore, and to make sure every person on board can do their job safely, including in an emergency evacuation or firefighting situation where lives depend on physical capability.
The requirement for a seafarer medical is not something the yachting industry invented. It comes from the Maritime Labour Convention 2006, an international treaty often called the MLC or the seafarers' bill of rights. Under the MLC, seafarers working on ships that fall under the convention must hold a valid medical certificate confirming they are fit for their duties. Alongside the MLC sits the STCW convention, the international standard on training, certification and watchkeeping, which also requires proof of medical fitness before a seafarer can hold safety training certificates that count.
On top of the international rules, each flag state sets its own detailed standards. A flag state is the country a vessel is registered in, and popular yachting flags include the United Kingdom, the Cayman Islands, the Marshall Islands, Malta, Jersey and the British Virgin Islands. The Cayman and other Red Ensign registries generally accept the ENG1, which is one reason the ENG1 has become the default medical across a large share of the professional fleet. If you hold a valid ENG1, you satisfy the medical requirement for a very wide range of the boats you are likely to apply to.
This is why the medical is so widely demanded. It is written into treaty law, echoed by flag-state regulation, and enforced by insurers and management companies who will not let an uncertified crew member sail. When you get hired, the boat's paperwork will list your ENG1 details, and a port state inspector can ask to see it. Turning up with an expired or missing certificate can hold up the whole vessel.
When your medical is valid and your documents are in order, you become an easy hire. Captains prefer crew who make their life simple. You can set up your free YSN profile and list your ENG1 status so recruiters see at a glance that you are ready to join.
The examination is more thorough than a basic doctor's check-up but it is not designed to catch you out. An approved doctor runs through a set of standard checks against published MCA standards. Most fit and healthy applicants pass comfortably in about thirty to forty-five minutes. Here is what happens on the day.
The table below sets out the main areas, the sort of standard applied, and useful notes to help you prepare.
| What is tested | Pass criteria (general) | Notes for applicants |
|---|---|---|
| Visual acuity (distance) | Deck crew must meet a higher standard; correction with glasses or lenses is allowed | Bring your glasses or lenses to the exam. Know your prescription. |
| Colour vision | Correctly reading Ishihara plates; a lantern test may be offered as a second chance | Strictest for deck and navigation roles. Interior and galley crew face lighter requirements. |
| Hearing | Able to hear alarms, speech and radio at a functional level | Hearing aids may be permitted with a restriction. Mention any known loss up front. |
| Blood pressure | No fixed cut-off, but sustained high readings are queried | Avoid caffeine and heavy exertion right before the test. Treated hypertension is often acceptable. |
| Body mass index | No single fail number; very high BMI triggers a functional assessment | The concern is real-world mobility and emergency capability, not looks. |
| Urine (dipstick) | Clear of significant sugar or protein | Undiagnosed diabetes is a common surprise finding. See your GP if flagged. |
| General mobility and fitness | Able to perform normal shipboard and emergency duties | Joint problems and limited movement may lead to a restriction rather than a full pass. |
None of these checks require you to be an athlete. They exist to confirm you can do the job and survive an emergency, nothing more. If you are in reasonable health, you have very little to worry about.
A standard ENG1 is valid for two years from the date of the examination. That two-year window is the norm for adult crew and matches the maximum period allowed under the MLC. When you are hired, the boat will note the expiry date, and you are responsible for renewing before it lapses.
There are important exceptions to the two-year rule. If you are under eighteen, the certificate is valid for only one year, because younger crew are re-checked more often. The doctor can also issue a certificate for a shorter period than two years if they want to review a specific health matter sooner. For example, if your blood pressure was borderline, the doctor might issue a one-year certificate and ask you to have it monitored, rather than issuing a restriction or a fail.
Plan your renewal ahead of time. Trying to book an ENG1 during a busy period in a major yachting hub can mean waiting a week or more for an appointment, and an expired certificate can stop you joining a boat or force the vessel to keep you ashore. If you are between contracts, get your renewal done early rather than scrambling when a job offer lands. A current medical is one of the fastest ways to say yes to an offer, and you can keep your free YSN crew profile updated with your latest expiry date so recruiters know you are ready to go.
One of the most common points of confusion for new crew is the difference between the ENG1 and the ML5, and how both relate to the medicals used by other flag states. Getting this right saves you money and stops you buying the wrong certificate.
The ENG1 is the commercial standard. It is what you need to work on a professional, commercially registered or privately registered superyacht that follows MLC and flag-state rules. If your ambition is a career in yachting, deckhand to captain, stew to chief stew, the ENG1 is the certificate to get. It is recognised widely across the professional fleet and accepted by the major Red Ensign flags and many others.
The ML5 is a lighter, cheaper medical designed for the UK leisure and small-craft world. It suits people working on small commercially endorsed vessels operating close to shore under specific UK coding rules, or certain leisure and workboat contexts. The ML5 is quicker and less demanding than the ENG1, and it costs less, but it does not carry the same weight. Most superyachts and most flag states will not accept an ML5 in place of an ENG1 for a professional crew position.
The practical takeaway is blunt. If you are trying to break into professional yachting and land a job on a superyacht, do not save money by getting an ML5. You will almost certainly be asked for an ENG1 and will have to pay again for the proper medical. Get the ENG1 from the start.
Some flag states issue or accept their own seafarer medicals. Registries such as the Marshall Islands, Liberia, Malta and the Cayman Islands each have medical standards, and some crew hold a medical issued directly under one of those flags. In practice, a valid ENG1 satisfies the medical requirement for most of the boats yacht crew apply to, which is why it remains the go-to. If a specific management company or flag asks for a particular medical, they will tell you, but starting with the ENG1 keeps the most doors open.
| Certificate | Best for | Accepted by superyachts? | Relative cost |
|---|---|---|---|
| ENG1 | Professional yacht crew and commercial seafarers | Yes, the industry standard | Higher |
| ML5 | UK leisure and small coded craft close to shore | Generally no | Lower |
| Flag-state medical (Marshall Islands, Malta and others) | Crew tied to a specific flag or management company | Depends on the flag and vessel | Varies |
When in doubt, ask the boat or the recruiter what they require before you book. If nobody has told you otherwise, the ENG1 is the safe choice for a yachting career.
An ENG1 can only be issued by a doctor approved by the MCA. These doctors are located around the world, not just in the UK, which is convenient because yacht crew are scattered across the major hubs and rarely near home. The MCA publishes a list of approved doctors by country, and the big crew hubs all have several to choose from.
Start with the official MCA list of approved doctors, which is organised by country and city. Crew agencies and training schools in the main hubs also know the local approved doctors well and can point you to one that fits your schedule. In busy ports the popular clinics book up fast during crew season, so reserve your slot early. Do not simply book any GP, because only an MCA-approved doctor can issue the certificate, and a normal doctor's fitness note will not be accepted.
Prices vary by country and clinic, and they change over time, so treat these as ballpark figures to budget against rather than fixed quotes. Always confirm the current price when you book.
| Region | Typical ENG1 cost | Notes |
|---|---|---|
| United Kingdom | Around 90 to 130 pounds | Widest choice of approved doctors; many clinics in port cities. |
| France (Antibes area) | Around 120 to 180 euros | Popular with crew starting the Mediterranean season. |
| Spain (Palma de Mallorca) | Around 120 to 180 euros | Book early during the spring crew rush. |
| United States (Fort Lauderdale) | Around 150 to 300 US dollars | Several approved doctors serve the yachting community. |
| Caribbean and other hubs | Varies widely | Fewer approved doctors; plan ahead and confirm availability. |
The medical is one of the cheaper parts of getting started in yachting, especially compared with your STCW training. Think of it as a small, unavoidable investment in your ability to earn. Once you are certified and ready to work, the job search itself costs nothing on YSN. You can register free and browse open crew positions without paying any placement fee.
Most applicants pass the ENG1 without drama, but a minority hit a snag. A snag does not always mean a flat fail. The doctor can issue an unrestricted pass, a pass with restrictions, or a decline. A restriction might limit you to certain vessel types, certain waters, or roles that do not need the standard you fell short on. Knowing the common problems in advance lets you prepare and, in many cases, sort them out.
Colour vision is the single most talked-about ENG1 problem, and for good reason. Deck and navigation roles require you to tell red from green because navigation lights, port and starboard markers, buoys and distress flares depend on it. If you fail the Ishihara plate test, the doctor may offer a lantern test as a second chance, which some people pass even after struggling with the plates.
Here is the honest part. Colour vision cannot be corrected the way short-sightedness can be corrected with glasses. So-called colour-correcting lenses are not a reliable fix for the test. If you have significant colour blindness, a deck career may be limited, but it is not the end of a yachting career. Interior roles, galley roles and engineering paths often have lighter colour vision requirements. Many successful crew have built strong careers on the interior after a colour vision result closed the deck door. If deck is your dream, get tested early so you know where you stand before you spend money on deck training.
Simple short or long sight is rarely a problem because correction with glasses or contact lenses is allowed. The standard is stricter for deck crew than for interior crew, but if your corrected vision is good, you will normally pass. Bring your current glasses or lenses to the exam and know your prescription. If your eyesight has changed recently, see an optician first so you turn up with the right correction.
You need to hear alarms, radio traffic and spoken instructions. Mild hearing loss does not automatically fail you, and hearing aids may be allowed, sometimes with a restriction noting that you must wear them on duty. If you know you have some hearing loss, mention it and be ready for the doctor to check it properly rather than hoping it goes unnoticed.
High blood pressure is one of the more common causes of a hiccup, partly because nerves on the day can push your reading up. If your reading is high, the doctor may retest you after you have rested. Sustained high readings can lead to a shorter certificate or a request that you get it checked by your own doctor. The good news is that well-managed blood pressure, including treated hypertension, is often perfectly acceptable. Avoid caffeine and hard exercise right before the appointment, and if you already know your pressure runs high, get it under control with your GP well ahead of time.
There is no magic BMI number that fails you, but a very high BMI can prompt the doctor to assess your mobility and your ability to perform emergency duties such as firefighting or escaping a smoke-filled space. The concern is functional. If you can move well and pass the practical assessment, a higher BMI is not necessarily a barrier. If it is flagged, the path forward is the obvious one, which is improving fitness over time.
The urine test sometimes turns up undiagnosed diabetes, and the history section can surface conditions the applicant did not think to mention. The lesson is to be truthful and to see your own doctor first if you suspect an issue. A managed condition is often fine. A hidden condition that surfaces at sea is a far bigger problem, both for your health and for your certificate.
If you do pick up a restriction, do not panic. Many crew work happily with restrictions that simply match their role. Focus on the jobs that suit your certificate, keep your documents current, and build a free crew profile on YSN so captains looking for exactly your skill set can find you.
From a captain's point of view, a valid ENG1 is a basic entry ticket. Without it, your application does not really start. With it, you clear the first filter and the conversation can move to your skills, your experience and your fit for the team. Crew agencies will ask for your ENG1 status before they put you forward, and many job listings state it as a requirement in the first line.
There is a practical advantage to being ready. When a boat needs someone quickly, and yachting is full of last-minute needs, the crew member who already holds a valid ENG1, STCW and the right visas can join immediately. The one who still needs to book a medical loses the slot. Being document-ready is a genuine competitive edge, especially for daywork and temporary positions that can turn into permanent jobs.
It also signals professionalism. A crew member who keeps their certificates current, tracks expiry dates and turns up prepared tells the captain they will be reliable on board too. That impression starts before you even meet, in how complete and organised your application looks. List your ENG1, its expiry, your STCW and your other tickets clearly, and you make yourself the easy yes.
YSN is built to connect ready crew with hiring boats without agency fees. Captains and management can search for crew by role, location and qualification, and you control what they see. Get your medical sorted, then create your free profile and start applying so you are in the running the moment a boat needs you.
The ENG1 is one part of a small stack of documents that every professional yacht crew member needs. Employers expect the whole set, so it helps to understand how they fit together.
STCW basic safety training is the mandatory safety qualification for anyone working on a commercial vessel. It covers personal survival techniques, fire prevention and firefighting, elementary first aid, and personal safety and social responsibilities. You complete it at an approved training school over several days, usually including time in a pool and a firefighting exercise. Along with the ENG1, STCW is a non-negotiable requirement to join a professional yacht. For a full breakdown of what the courses involve and how to book them, read our STCW certification guide for yacht crew.
The seafarer's discharge book, often called an SRB, is your official record of sea service. Each contract is logged in it, building a documented history of the vessels you have worked on and the time you have served. You will need this record when you apply for higher certificates of competency later in your career, so start one early and keep it stamped and up to date. Your discharge book is issued by a flag state, and many crew hold a UK or a flag-state SRB.
Where you can legally work depends on your nationality and the boat's cruising itinerary. Crew heading to the United States commonly need the correct visa, often a B1/B2, to join a yacht in American waters or to travel there for work. Schengen area rules affect crew working the Mediterranean season in Europe. Visa requirements are personal and change, so check the current rules for your passport and your intended cruising ground well before you need to travel. Getting caught out by a visa problem can cost you a contract.
Documents get you through the door, but you still have to win the job. A clear, well-formatted crew CV and a smart approach to dockwalking and daywork are how new crew break in. Our yacht crew CV and dayworking guide walks through building a CV that captains actually read and using daywork to gather references and experience. Pair that with your medical and safety tickets and you have a complete, hireable package.
When your document stack is complete, the search begins. YSN lets you put all of it in one profile and get in front of hiring captains for free. Take a moment to sign up and list your full set of qualifications so nothing about you is a mystery to a recruiter.
Yachting has a handful of gravity centres where crew and boats gather, and knowing them shapes where you base yourself while you look for work. Fort Lauderdale in Florida is the busiest yachting hub in the world, packed with boats, crew agencies, training schools and approved doctors, and it runs hard through the winter and the shoulder seasons. It is a natural place to get your ENG1, complete your STCW and start dockwalking. You can see current openings on our crew jobs in Fort Lauderdale page.
On the other side of the Atlantic, Antibes in the south of France, Palma de Mallorca in Spain, and the wider Mediterranean coast come alive for the European summer season. Newport in Rhode Island is a strong summer hub on the US east coast. Many crew follow the seasons, working the Mediterranean in summer and the Caribbean or Florida in winter, which is one reason a globally recognised medical like the ENG1 is so valuable. Wherever you are based, being document-ready lets you jump on opportunities as boats move between these ports.
Putting it all together, here is a clean order of operations for getting into professional yachting with your paperwork in the right sequence.
Every step on that list makes you a more obvious hire. The medical is the foundation, and it is one of the quickest and cheapest to complete. Do it first, then stack the rest on top. When you are ready, join YSN for free and put yourself in front of hiring captains.
A standard ENG1 is valid for two years for adult crew. If you are under eighteen, it lasts one year. The doctor can also issue a shorter certificate, for example one year, if they want to review a specific health matter such as borderline blood pressure sooner. Always renew before the expiry date, because an expired medical can stop you joining a boat.
It depends on the severity and the role you want. Colour vision matters most for deck and navigation work because of navigation lights and buoys. If you fail the Ishihara plates, the doctor may offer a lantern test as a second chance. Significant colour blindness can limit deck roles, but interior, galley and some engineering paths often have lighter colour vision requirements, so a yachting career is still very possible.
The ENG1 is the commercial seafarer medical accepted across professional yachting and the major flag states. The ML5 is a lighter, cheaper medical for UK leisure and small coded craft operating close to shore, and it is generally not accepted for superyacht jobs. If you want a professional yachting career, get the ENG1 rather than the ML5.
Prices vary by country and clinic and change over time. As a rough guide, expect around 90 to 130 pounds in the UK, around 120 to 180 euros in France or Spain, and around 150 to 300 US dollars in Fort Lauderdale. Always confirm the current price when you book, and note that only an MCA-approved doctor can issue the certificate.
Bring your glasses or contact lenses and know your prescription. Avoid caffeine and hard exercise right before the appointment so your blood pressure reading is not artificially high. Be honest on the medical history form, and if you already know about a condition such as high blood pressure or diabetes, see your own doctor first to get it managed. Turning up rested and prepared gives you the best chance of a clean pass.
Yes. They are separate requirements and you need both. The ENG1 certifies you are medically fit, while STCW basic safety training certifies you have completed mandatory safety and survival training. A professional yacht will expect to see both, along with your discharge book and the right visas, before you join.
MCA-approved doctors work in many countries, including the major yachting hubs. Fort Lauderdale, Antibes and Palma all have approved doctors who serve the yachting community. Use the official MCA list of approved doctors, which is organised by country and city, and book early during busy crew seasons because appointments fill up fast.
A restriction is not a full fail. It means you are fit for certain roles, vessel types or waters but not others, or that you must meet a condition such as wearing hearing aids or glasses on duty. Many crew work happily within a restriction that matches their role. Focus your job search on positions that suit your certificate and keep your documents current.
The ENG1 medical is the foundation of a yachting career. It is required by international law through the MLC, enforced by flag states and insurers, and demanded by every professional boat you will want to work on. The exam itself is straightforward for most people, the cost is modest, and the certificate lasts two years. Get it early, prepare properly, and understand the common problems so you can handle them before they cost you a job.
Once your medical, your STCW, your discharge book and your visas are sorted, the only thing left is landing the boat. That is where Yacht Service Network comes in. It is free for crew, there are no agency placement fees, and captains who are hiring right now can find you by role, location and qualification. Put your documents in order, then create your free YSN crew profile today and start turning your paperwork into a job offer.