Before anyone sets foot in a survival suit or steps into a lifeboat drill, there’s a quieter checkpoint that catches people out more often than you’d expect.
Medical fitness.
It doesn’t get talked about as much as course bookings or job applications, but it sits right at the front of the process. At Stream Marine Training in Glasgow, we regularly speak to delegates who are ready to book their STCW Basic Safety Training Week and only then realise they need an ENG1 medical certificate in place first.
That can slow everything down.
Maritime and offshore employers take medical fitness seriously for a simple reason. When you’re at sea or working offshore, support is limited. You need to be physically and mentally fit to operate safely, not just for yourself but for everyone around you.
The ENG1 medical is how that standard is checked in the UK. It’s not complicated, but it is essential. And understanding what’s involved early makes the whole process far smoother.
A requirement that sits behind everything else
The ENG1 medical certificate is issued under UK regulations by the Maritime and Coastguard Agency. It confirms that a seafarer meets the required level of medical fitness to work at sea, particularly on UK-flagged vessels or when holding UK-issued qualifications.
It is not something a GP can provide. The examination must be carried out by an MCA-approved doctor, and it must be done in person.
At SMT, we require a valid ENG1 before starting most STCW courses. You can view our full range of STCW courses page, and this requirement applies across the board. In some cases, delegates can provisionally book whilst arranging their medical, but the certificate must be in place before training begins.
Employers will check it too. Even if you complete your training, you won’t be deployed offshore or onboard without a valid medical certificate. It is part of the entry standard for the industry.
Most ENG1 certificates are valid for two years, although shorter periods can be issued depending on individual health circumstances.
What actually happens at the ENG1 medical
A lot of the anxiety around ENG1 comes from not knowing what to expect. In reality, the process is straightforward and typically takes 30 to 45 minutes.
First, you’ll need to find an MCA-approved doctor. There’s a list available on the MCA website, and clinics are spread across the UK. Some areas have more availability than others, so it’s worth booking early if you have training dates in mind.
When you attend your appointment, you’ll usually be asked to bring:
- Photo ID
- Glasses or contact lenses if you wear them
- A list of any medications
- Relevant medical records if you have ongoing conditions
The examination itself covers several areas.
Your vision is tested using a standard eye chart, both with and without correction if applicable. Colour vision is also assessed, which is particularly important for roles involving navigation or signalling.
Hearing is checked, often through a basic audiometry test.
You’ll have your blood pressure taken, and a urine sample will be requested. This helps screen for conditions such as diabetes and kidney issues, as well as checking for substances.
There’s also a general physical examination. Nothing invasive, but enough to assess overall fitness for sea service.
Alongside the tests, the doctor will ask about your medical history. That includes past conditions, surgeries, medications, and general lifestyle factors. Mental health is part of this conversation too.
The cost typically falls between £80 and £120, depending on the clinic. Results are often provided the same day, although some cases may take up to 48 hours if further review is needed.
Medical conditions and how they are assessed
This is where most of the uncertainty sits.
There isn’t a simple pass or fail checklist. Every ENG1 assessment is made individually by the examining doctor, based on your specific circumstances.
Certain areas are looked at more closely. Vision and hearing are obvious ones, as they directly impact safety at sea. Cardiovascular health is another, particularly where there are risks of sudden incapacitation.
Conditions like diabetes, epilepsy, or mental health concerns are assessed carefully. That does not automatically mean someone cannot obtain an ENG1. Many seafarers with well-managed conditions hold valid certificates.
Medication can also come into consideration, depending on what it is and how it affects performance.
The key point is honesty. It is far better to declare conditions and have them assessed properly than to withhold information. Undisclosed issues can create serious problems later, particularly during employment checks.
If there’s any doubt about a specific condition, the safest approach is to speak directly with an MCA-approved doctor before booking training.
This blog provides general information, not medical advice. Individual medical assessments are made by approved doctors based on your personal situation.
How ENG1 fits into your training timeline
Timing matters more than people think.
We see it regularly at SMT. Someone books training, gets excited to start, and then realises they need to arrange a medical appointment. If clinic availability is tight, that can delay everything.
Our advice is simple. Get your ENG1 sorted early.
Most UK training providers, including Stream Marine Training, require a valid ENG1 before the course begins. You can provisionally secure a place, but you won’t be able to attend without it.
The same applies offshore. If you’re planning to move into OPITO-certified roles, the expectation around medical fitness remains. You can explore those options on our OPITO courses page, where the same principle applies.
It’s also worth considering expiry dates. If your ENG1 runs out during a contract or shortly after training, you’ll need to renew it. That can interrupt your plans if not managed properly.
A bit of forward planning saves a lot of frustration.
Keeping your ENG1 current
Once you have your certificate, it’s not something to forget about.
Most ENG1 certificates are valid for two years. Some are issued for a shorter period, often one year, if the doctor needs to monitor a specific condition.
Renewal involves the same process as the initial examination. There is no extension based on previous results.
Employers will check validity dates, and working with an expired certificate is not an option. Setting a reminder well in advance is a good habit to get into, especially if you plan to work continuously in the industry.
A note for international delegates
Not everyone coming through maritime training in the UK will require an ENG1.
International seafarers may need an STCW medical certificate issued by their own country’s recognised authority. The standards are similar, but the issuing body differs.
If you’re unsure which certificate applies to you, it’s worth checking before booking. Our team at Stream Marine Training can guide you on this, particularly if you’re travelling to Glasgow for training.
Why it’s worth getting this sorted early
There’s a tendency to focus on the exciting parts first. Courses, qualifications, job opportunities.
The ENG1 medical sits quietly in the background, but it underpins everything else.
Having a valid certificate in place removes uncertainty. It means you can book training with confidence, progress into employment without delays, and meet the expectations of employers from day one.
At SMT, we’re always happy to help clarify requirements around medical fitness, courses, and timelines. If you’ve got questions or you’re unsure where to start, you can reach us at bookings@streammarinetraining.com or call +44 (0)141 212 8777.
Getting the medical sorted early keeps everything else moving forward.
FAQs: ENG1 Medical Certificate
What does ENG1 stand for?
ENG1 is the UK MCA medical fitness certificate code. It confirms you meet medical standards for work as a seafarer on UK-flagged vessels or for UK-issued certificates of competency.
Do I need an ENG1 before starting STCW training?
Yes, most UK training providers (including Stream Marine Training) require a valid ENG1 before your STCW course starts. Some allow conditional booking whilst you arrange your medical.
How long does an ENG1 medical certificate last?
Typically 2 years. Some certificates are issued for shorter periods (1 year) if medical conditions need regular monitoring. Check the expiry date on your certificate.
Can my regular GP issue an ENG1 certificate?
No. ENG1 medicals must be conducted by MCA-approved doctors. Regular GPs cannot issue ENG1 certificates. Find approved doctors on the MCA website.
How much does an ENG1 medical cost?
Typically £80-£120 depending on clinic location. Prices vary between approved medical examiners. This is paid directly to the medical clinic, not to training providers.
What happens if I fail the ENG1 medical?
If medical concerns are identified, the doctor may issue a conditional certificate, request further specialist assessment, or decline certification. You can reapply once medical concerns are addressed.
Can I get an ENG1 medical with diabetes?
Possibly, if well-controlled. Many seafarers with managed diabetes hold ENG1 certificates. The examining doctor assesses control levels, medication, and monitoring. This is assessed individually.
Do I need an ENG1 for offshore oil and gas work?
Yes, if you’re working on UK-flagged vessels or need UK certification. Offshore OPITO training also requires valid medical fitness certification. Check with your employer.
How long does the ENG1 examination take?
Usually 30-45 minutes including all tests and medical discussion. Results are often available the same day or within 48 hours.
Can I book my STCW training before getting my ENG1?
At SMT, you can provisionally book whilst arranging your ENG1, but the valid certificate must be in place before your course start date. Contact us if you have questions: bookings@streammarinetraining.com
