required by IMO and the flag states Shift logbooks On any industrial site, there is a continuous stream of operational, maintenance and safety events occurring at all levels and areas within the process. An electronic shift logbook is used at power plants and in process industry where several shift teams cooperate in maintaining production. Typically the electronic shift logbook is used to record state at the production plant, but it can also contain simple planning functions that notify personnel about upcoming maintenance activities. Compared to the paper logbook the electronic shift logbook enhance the value of the gathered information through: Search functions Defined plant hierarchy for registration of logbook entries Classification according to certain entry types Statistics about most problematic areas Management reports Additionally, access to the information storage can be controlled through user authentication and authorizations mechanisms. Other applications It has since been applied to a variety of other uses, including: Aircraft pilots must maintain a pilot logbook to record their time spent flying and in a simulator. In addition, aircraft operators must maintain an aircraft technical logbook (or "techlog") recording the aircraft's flights, maintenance and defects. In a project, a logbook is a recording which is compiled while it is being done may be called a project diary. In the PRINCE2 project management framework, daily logs are used to record issues, actions or events not caught by other types of registers or logs within the framework. Examples of other logs or registers in PRINCE2 include the lessons log, risk register, issue register, quality register or backlog. In skydiving, a logbook serves as a parachutist's personal history in the sport and also serves as an identifying document. It also provides drop zones proof to back one's skydiving licenses, ratings and currency. In scuba diving, the dive log documents the experience of a diver by logging a diver's dives. In the fishing industry, a logbook is used to record catch data as part of the fisheries regulations. It is then submitted to the fishing authorities of the vessel's flag state. For amateur radio, the logbook is where the hams register their contacts and other radio operations. There are several programs to help radio operators in the management of their logbook. For commercial vehicles: In Canada, the United States, New Zealand and other countries, a logbook is used to register driver and operator work time for commercial heavy vehicles. In the