Can I apply for a health certificate from the Maritime Safety Administration on holidays?

You can't. MSA health certificate can't be applied for holidays, because the staff who apply for seafarers' health certificate on weekends and holidays in the commodity inspection registration hall are not at work. MSA health certificate is an indispensable document for seafarers to take up their posts and board ships, and it is a written occupational medical certificate that shows that seafarers' physical condition can effectively perform their duties.