Working on a ship requires a crew service book, a crew competency certificate and a training certificate, among which the training certificate includes a basic safety training certificate (Z0 1), a safety awareness training certificate (Z07) and a crew training certificate with designated safety responsibilities (Z08).

Among them, the certificate that records the qualifications, relevant training and physical examination of seafarers is the Service Book for Seafarers, which is also one of the certification documents for seafarers to apply for examinations, apply for post upgrade visas and renew their certificates of competency.

The full name of "seaman's competency certificate" is People's Republic of China (PRC) * * * and China seaman's competency certificate. The captain, officers, sailors on duty and mechanics on duty working on the seagoing ships registered in China shall hold valid certificates of competency for the navigation area, type, grade or main engine type of the ships they serve and their positions.

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Other certificates can be combined in the training certificate: master lifeboat and rescue boat training certificate (Z02), advanced fire fighting training certificate (Z04) and master first aid training certificate (Z05), basic safety training certificate (Z0 1, that is, four certificates), safety awareness training certificate (Z07) and crew members with designated safety responsibilities.

Maritime Safety Administration of the People's Republic of China-Measures for the Administration of Crew Examination and Certification