Four certificates are the most basic certificates for working on a ship and are necessary for everyone. After passing the training of four certificates, you should know the relevant skills of ship rescue, fire fighting, first aid and raft operation. However, only four certificates can't be employed on the ship, and (the personnel of the Ministry of Affairs can, such as cooks and waiters) must also have certificates of competency for corresponding positions, such as mechanic's certificate, sailor's certificate, driver's certificate and engineer's certificate.
Four certificates for seafarers, specifically: familiarity and basic safety training certificate, survival craft and rescue boat training proficiency certificate, advanced fire protection training certificate, first aid training proficiency certificate, advanced medical training certificate, ship security officer training certificate, safety awareness training certificate, crew training certificate with safety responsibility, etc.
The four certificates of crew mainly involve basic books such as advanced fire fighting, mastering ship first aid, basic safety (ship fire prevention and social responsibility), basic safety (personal survival), basic safety (basic first aid), operation and management of lifeboats and rescue boats. It is not difficult to pass the four certificates of crew. After reading these books, I believe it is very simple to get this certificate.