Logbooks are supplied by IMCA, but any logbook is suitable if it contains all the required information. The minimum information required in the diver’s logbook for each dive is:
name of diver; name and address of the diving contractor.
the date to which the entry relates (an entry must be completed daily for each dive carried out by the diver); the name or other designation and the location of the installation, worksite, craft or other place from which the diving operation was carried out; the name of the supervisor who was in control of a diving operation in which the diver took part; the maximum depth reached on each occasion.
the time the diver left the surface, the bottom time, and the time the diver reached the surface on each occasion; where the dive includes time spent in a compression chamber, details of any time spent outside the chamber at a different pressure; the type of breathing apparatus and mixture used by the diver; any work done by the diver on each occasion, and the equipment (including any tools) used in that work; any decompression schedules followed by the diver on each occasion; any decompression illness, discomfort or injury suffered by the diver; any other factor relevant to the diver’s safety or health; any emergency or incident of special note which occurred during the dive.