After the two-year health certificate expires, can MSA participate in the knowledge update?

I can't. According to the relevant information of the Maritime Safety Administration, it is known that the two-year health certificate of the Maritime Safety Administration has expired and it is impossible to participate in the knowledge update. For the crew members who have already worked on an international sailing ship or plan to work on an international sailing ship in the near future, the certificate of competency is about to expire, but it cannot meet the requirements of updating knowledge and holding a valid health certificate. The unit to which they belong can apply for a certificate to the Maritime Safety Administration under special circumstances. According to the provisions of domestic and relevant international conventions, the seafarers' health certificate can be automatically extended for up to 3 months under special circumstances after it expires.