The MLC, 2006 (Standard A1.2) and the STCW Convention (Regulation I/9) set maximum periods of validity. National authorities can set shorter periods, and examiners can issue certificates for shorter periods when health reasons justify it.
| Situation | International maximum |
|---|---|
| Medical certificate, seafarers aged 18 and over | 2 years |
| Medical certificate, seafarers under 18 | 1 year |
| Certification of colour vision | 6 years |
If a certificate expires during a voyage
Under MLC Standard A1.2, a certificate that expires in the course of a voyage continues in force until the next port of call where a medical practitioner recognised by the flag state is available, provided that period does not exceed three months.
Urgent cases
The MLC also allows a competent authority, in urgent cases, to permit a seafarer to work without a valid medical certificate until the next port of call where a recognised practitioner is available — for no longer than three months, and only if the seafarer holds a recently expired certificate.
Why SeafarerFit never assumes a validity period
Because national rules, age and individual circumstances all affect validity, the certificate tracker asks you for the expiry date printed on your own certificate.
Sources
- International Labour Organization — MLC, 2006 — Standard A1.2 (Medical certificate) (opens in a new tab)
- International Maritime Organization — STCW Convention — Regulation I/9 (opens in a new tab)
Links go to the original publishers. SeafarerFit is not affiliated with or endorsed by these organizations.