This standard specifies the basic requirements for logbook records, storage requirements, production, registration and issuance, format, page design, record content, common ship positions and their abbreviated codes, record symbols, cloud shapes, common ship positions and their corresponding symbols, and printing requirements . This standard is applicable to all sea-going ships of Chinese nationality on international voyages and Chinese-registered ships of more than 500 gross tonnage on coastal voyages. Ships of Chinese nationality navigating along the coast with a gross tonnage of less than 500 can follow the implementation.