Seafarer Medical Certificate: Validity, Expiry, and How to Check Yours Before You Sign On

Almost everything written about the seafarer medical is about getting it — which tests, which doctor, how much. Very little is written about the piece of paper you walk out with, and that is where most of the real problems start.

A certificate that expires three weeks into a nine-month contract. A renewal booked too late because nobody explained that the clock runs from the examination date, not from the day you join. A seafarer at sea watching a date pass and not knowing whether he is still legal. A company rejecting a certificate because it was issued by a doctor who was not approved for that flag.

None of those are medical problems. They are paperwork problems, and every one of them is avoidable if you understand four things: how long your certificate lasts, what happens when it runs out at sea, how to confirm it is properly on record, and when to start the renewal. That is what this guide covers.

This is the question that keeps seafarers awake, and there is a clear answer that very few Indian websites bother to give.

Read that carefully, because it is narrower than most people hope.

• It applies to expiry during a voyage. It is not a general three-month grace period you can use ashore. You cannot let a certificate lapse at home, sign on anyway, and claim three months.

• You must renew at the next port where it is actually possible. Not the most convenient port, not the one nearest home — the next one where a qualified practitioner is available. The three months is an outer limit, not an entitlement to wait.

• Three months is the absolute ceiling. Past that the certificate is expired, full stop, whatever the voyage plan says.

The practical consequence: this rule exists to stop a ship being detained and a seafarer being stranded because of a date. It is a safety net, not a plan. If you can see that your certificate will expire during the contract you are about to sign, renew before you fly out. It costs one appointment and prevents an argument in a foreign port where you have no leverage and no familiar doctor.

A related trap worth naming: port state control inspections do check certificates. An expired or improperly issued medical on board is a deficiency against the ship, not just against you, which is why masters and companies are strict about it and why arguing on the day rarely works.

Indian seafarers hold their credentials against an INDoS number, and the Directorate General of Shipping maintains an e-governance system through which seafarer records and approved examiners are administered. Companies and crewing agents routinely verify a medical against that record rather than taking the paper at face value.

What you should do, in order:

• Confirm the doctor was approved for your purpose before you booked. This is the check that actually prevents problems. DG Shipping publishes the list of approved medical examiners; a certificate from a doctor who is not on the relevant list is not going to be accepted, however thorough the examination was.

• Ask the centre how and when the examination is recorded, and what reference number you should quote if a company queries it. A DG Shipping approved centre will answer this without hesitation.

• Log in to your own DG Shipping e-governance seafarer profile and look at what is showing against your INDoS number. Do this a few days after the examination rather than the same evening.

• If something is missing or wrong, go back to the examining centre first. They hold the record and are the ones who can correct or resubmit it. Contacting the company or the crewing agent before the clinic simply adds a party to the problem.

The mistake is almost never leaving it too late by months. It is leaving it too late by two weeks, which is enough.

Work backwards from the date you are due to join:

• Three months before sign-on — look at your certificate and ask one question: will it still be valid on the day I sign off? Not sign on. If the answer is no, renew now.

• Six to eight weeks before — book the examination. This leaves room for a repeat blood test, a review appointment, or a dental issue to be sorted out without drama.

• Two weeks before — confirm the certificate is showing correctly on your record and that the company has accepted the copy you sent.

• Never the same week as your flight. If one result comes back needing a recheck, you have no room at all.

Two situations that need more lead time than people expect:

If you are on medication for anything ongoing — blood pressure, diabetes, thyroid, asthma, a psychiatric condition — allow extra weeks. The examining doctor will usually want recent reports from your treating physician, evidence that the condition is controlled, and sometimes a specialist opinion. Bringing those to the first appointment turns a three-visit process into one.

If you were declared unfit or given a restricted certificate last time — start earlier still, and bring the previous certificate and everything you have done since. A documented improvement is a completely different conversation from an undocumented claim of improvement.

What to bring to any renewal: passport, CDC, INDoS number, your previous medical certificate, colour vision certificate, spectacles or contact lenses if you use them, a list of every medicine you take including doses, reports for any ongoing condition, and vaccination records. If you have had surgery or a hospital admission since the last medical, bring the discharge summary. It will be asked for.

Lost certificate. Go back to the centre that examined you. They hold the record of the examination and are the only party who can issue a duplicate or a certified copy. Take your passport, CDC and INDoS number, and the approximate date of the examination. This is why photographing the certificate on the day matters — a photograph makes the duplicate far easier to trace.

Damaged or illegible certificate. Same route, and do not attempt to repair, laminate over, or rewrite anything on it. An altered-looking certificate is a bigger problem than a torn one.

Company says it is not acceptable. Before assuming a mistake, find out which of these it is:

• The flag requires a different certificate (see section 05) — the commonest cause, and not a fault in your certificate at all.

• The doctor was not approved for that requirement.

• A detail does not match your passport or CDC.

• The company requires its own PEME in addition to the statutory certificate.

• The validity does not cover the intended contract.

Ask which one it is, in writing. Each has a different fix, and four of the five do not require another full medical.

Never accept an offer to arrange a certificate without the examination. It happens, it is offered, and it ends careers. A certificate obtained that way is a fraudulent document; the seafarer holding it carries the consequence, not the person who sold it. There is no version of this that is worth it.

The line that decides your career is usually one or two words long, and most seafarers have never had it explained. Certificates differ in wording between flags, but the decisions fall into the same categories.

• Fit for all duties, unrestricted. No conditions attached, valid for the full period the doctor has assigned. This is what most seafarers receive.

• Fit with a limitation. You are fit, and one condition is recorded against it. Corrective lenses is overwhelmingly the most common. Others include a restriction on night lookout duties, a restriction to particular trading areas, or a requirement to carry a supply of a specific medication. The limitation is part of the certificate and must be observed on board.

• Fit for restricted service. Fit for some roles but not all — for example fit for engine room or catering duties but not for lookout duties. This is a working certificate, but it narrows which jobs you can take, so understand it before signing a contract.

• Temporarily unfit. Something is currently outside the standard and is expected to correct with treatment. A date or a condition for review will normally be stated.

• Permanently unfit. Reserved for conditions genuinely incompatible with safe service at sea, and much rarer than the fear of it.

What “lookout duties” actually means, and why it matters

You will see this phrase on deck certificates and it is the one most worth understanding. A lookout is the person responsible for spotting other vessels, lights and hazards, and the standard for it is stricter than the standard for general fitness — it turns on distance vision, night vision and colour vision, because navigation lights are identified by colour.

This is why the colour vision certificate exists as a separate document with its own six-year validity. A seafarer who cannot reliably distinguish red from green cannot safely identify a vessel’s port and starboard lights, which is a navigational safety matter rather than a general health one. It does not prevent a career at sea; it shapes which department that career is in. Engine, catering and several other roles do not require the lookout standard.

If you are a deck cadet or aspiring navigating officer, get your colour vision checked before committing money to a course, not after. It is a five-minute test and it is the single most common reason a maritime career plan has to be redirected. Being told at nineteen is inconvenient; being told after two years of fees is something else.

A worked example on contract length

The arithmetic that catches people out, laid out plainly:

• Medical examination: 10 February 2026. Certificate issued for the full two years, so it expires 9 February 2028.

• You sign on: 1 December 2027. Certificate valid — ten weeks left on it.

• Contract length: eight months. Expected sign-off: August 2028.

• Your certificate expires in February, roughly six months before you sign off.

At the point of signing on, everything looks correct on paper, and a busy crewing office may not catch it. The expiry then falls mid-voyage, and you are relying on the three-month rule and on reaching a port where renewal is genuinely possible — in a contract that still has six months to run, which the three months does not cover.

The fix takes one appointment: renew before you fly out, even though the existing certificate is still valid. A certificate can be renewed early. Losing ten weeks of validity is a trivial price for not having this problem in the middle of the Atlantic.

If you read nothing else on this page, read this.

• Know your expiry date by heart. Not roughly — the actual date. Put it in your phone calendar with a reminder three months before.

• Check it covers your sign-off, not just your sign-on. This one sentence prevents most mid-contract problems.

• Keep the colour vision certificate separately and know its own expiry, which is on a six-year clock.

• Photograph everything the day it is issued and email it to yourself.

• Confirm the flag and the company requirement in writing before booking any medical.

• Verify the doctor’s approval covers the certificate you need.

• Check every detail against your passport before you leave the clinic.

• Declare your medical history and your medicines. Concealing something that is later discovered is far more damaging than the condition itself.

• Never buy a certificate.

None of this is complicated. It is simply the part nobody tells you, because everyone is busy explaining the tests.

Sources: Maritime Labour Convention 2006, Standard A1.2 (validity periods, review of a refused certificate, and the three-month rule for expiry during a voyage). Indian requirements are administered by the Directorate General of Shipping under the Merchant Shipping medical examination rules.

Disclaimer: This article is for general guidance for seafarers and is not a substitute for the requirements set by your flag administration, your company, or the examining medical practitioner. Regulations and portal procedures are updated from time to time — always confirm current requirements with your company and with a DG Shipping approved centre before booking.