C1.2.j. What happens if a medical certificate was issued before the MLC, 2006 entered into force? Does this mean a seafarer has to have another examination?

The date of entry into force of the Convention for the country is not directly relevant to any certificates that may have been issued, such as a medical examination certificate. These certificates should be considered on their merits without regard to the fact they were issued prior to entry into force. However, if the medical examination does not meet the MLC, 2006 requirements then there may be a question, perhaps related more to whether a flag State should recognize a non-compliant situation for the purpose of inspection and issuing a Maritime Labour Certificate [see C1.3.g.].

Medical certificate