ENG1 Medical Certificate: Requirements, Cost and Validity

An ENG1 medical certificate is one of the most familiar documents in professional yachting, but it is often misunderstood by people entering the industry. It is not a training certificate and it does not prove that somebody is competent to work on deck, in the interior or in the engine room; it is evidence that an approved doctor has assessed the seafarer against the medical and eyesight standards required for work at sea.

For superyacht crew following the UK Maritime and Coastguard Agency system, the certificate matters because employers, flag requirements and later professional qualifications may all depend on valid medical fitness. The practical questions are therefore simple but important: who needs an ENG1, what happens during the examination, how much can it cost, how long does it last and what should a crew member do if the doctor issues a restriction or refuses a full certificate?

Who needs an ENG1 for superyacht work?

The MCA states that an ENG1 is required for seafarers serving on merchant ships or yachts where the ENG1 medical system applies, although some other medical certificates can be accepted as equivalents in defined circumstances. In the superyacht sector, a valid ENG1 or an accepted equivalent is routinely required for professional crew and is also built into the qualification path for many MCA deck and engineering certificates.

There is an important distinction between an ENG1 and an ML5. The ML5 medical can be used for some smaller commercial-vessel operations under limited operating categories, but it is not a general replacement for an ENG1 in large-yacht employment, and restrictions on an ENG1 can also affect eligibility for STCW qualifications on vessels over 24 metres.

That means a new crew member should not choose a medical certificate simply because one appointment is cheaper or easier to obtain. The correct certificate depends on the vessel, flag, area of operation and qualification route, so candidates planning a long-term superyacht career should check the requirements that apply to the jobs and certificates they actually intend to pursue.

What happens during the ENG1 examination?

An ENG1 can only be issued by a doctor approved by the MCA for this purpose. The MCA publishes and regularly updates lists of approved doctors, and candidates should book with an approved doctor rather than assuming that a normal GP, private clinic or occupational-health provider can issue the certificate.

Before the appointment, the MCA asks candidates to bring their previous medical certificate if they have one, details of their local doctor, information about medication, glasses or contact lenses if used, and acceptable photographic identification. Providing accurate medical information matters because the assessment is about whether a condition, treatment or impairment could create an unacceptable risk to the seafarer, other crew or the safe operation of the vessel.

The examination normally includes a medical-history review, height and weight measurements, a urine sample, hearing checks and eyesight testing for distance, near vision and colour vision. The doctor also carries out a physical examination, and the standards are designed around the realities of seagoing work, including emergency duties, communication, mobility, stamina and the possibility of being a long way from immediate medical assistance.

Passing the medical does not mean that every seafarer receives an unrestricted two-year certificate. The approved doctor can issue a certificate with restrictions where the person is fit only for particular duties or conditions, and a shorter validity period can also be used when more frequent medical review is appropriate.

How much does an ENG1 cost in 2026?

The current MCA maximum fee for an ENG1 medical examination is £115. That is a statutory ceiling for the examination rather than a guarantee that every approved doctor will charge exactly that amount, and candidates should still confirm the fee when booking because replacement certificates, additional tests or other services can be treated separately.

The medical itself is only one of the early costs of entering professional yachting. New crew often need STCW basic safety training, travel, accommodation and other role-specific certificates as well, so the ENG1 should be budgeted as part of the wider cost of becoming employable rather than viewed in isolation.

It is also worth avoiding false economies. Booking with somebody who is not authorised to issue an MCA ENG1, or travelling with an expired or inappropriate medical because it was cheaper, can create far more expensive problems when a yacht is ready to hire and needs compliant documents immediately.

How long is an ENG1 valid?

Under the current MCA medical rules, the maximum validity of an ENG1 is two years for a person aged 18 or over and one year for somebody under 18. An approved doctor may issue a certificate for a shorter period when medical circumstances justify earlier review, so the expiry date printed on the individual certificate is the date that matters in practice.

Crew should not assume that medical fitness is irrelevant until the printed expiry date arrives. MCA guidance identifies reportable changes in medical condition during the validity period, and a significant illness, injury, treatment or medication change may need to be reported rather than simply waiting for the next routine medical.

For operational planning, renewing before the last possible day is sensible because yacht schedules move quickly and appointments in major crew centres can become busy. A certificate that expires during a crossing, charter programme, qualification application or crew change can create avoidable disruption even when the person remains medically fit.

Restrictions, failed medicals and accepted equivalents

If the approved doctor considers the candidate fit but subject to a restriction, temporarily unfit or permanently unfit, the MCA system provides formal documentation explaining the outcome. An ENG3 notice can be issued in cases involving restriction or longer periods of unfitness, and there are review procedures for qualifying decisions rather than leaving the seafarer with only an informal verbal explanation.

A restriction is not something to hide from a recruiter or yacht. It may limit the duties, trading area or certification available to the seafarer, and the safest approach is to understand exactly what the restriction means before applying for roles that could conflict with it.

The MCA also recognises certain overseas medical certificates as equivalents to the ENG1 in specified circumstances, which is particularly relevant to an international industry where crew may train, live and work in different countries. Recognition is not automatic for every foreign medical, so crew should use the current MCA equivalency information and the requirements of the yacht's flag administration before relying on a non-UK certificate.

What superyacht crew should check before joining

For most crew, the practical rule is to treat the ENG1 as a live employment document rather than something completed once and forgotten. Check the expiry date, make sure the original certificate is available when joining, keep a secure copy for your records and confirm that any restriction is compatible with the position and the vessel's flag requirements.

The ENG1 is ultimately a safety document, not an obstacle designed to make yacht employment more difficult. A valid certificate tells the yacht that an approved medical assessment has been completed to a recognised seafarer standard, while the crew member gains early warning of any medical issue that could affect a career at sea.